| Tsuyoshi Yoshitake | Last modified date：2024.04.24 |
Professor /
Applied Electromagnetics /
Department of Advanced Energy Science and Engineering /
Faculty of Engineering Sciences
Presentations
| 1. | Lama Osman Mohamed、Abdelrahman Zkria、Ali M Ali、Hiroshi Naragino、Tsuyoshi Yoshitake, Influence of negative bias voltages on mechanical and structural properties of nanodiamond composite films on Ti substrates, The 70th JSAP Spring Meeting 2023, 2023.03. |
| 2. | Abdelrahman Zkria Ahmed、Eslam Abubakr、Tsuyoshi Yoshitake, Application of nanosecond laser annealing to diamond materials, The 70th JSAP Spring Meeting 2023, 2023.03. |
| 3. | Sreenath Mylo Valappil、Shinya Ohmagari、Abdelrahman Zkria、Tsuyoshi Yoshitake, Low Specific Contact Resistance Nanocarbon Ohmic Contacts Fabricated by Coaxial Arc Plasma Deposition on Semiconducting Diamonds and Their Device Applications, The 70th JSAP Spring Meeting 2023, 2023.03. |
| 4. | Y. Sasaguri, T. Kageura, T. Yoshitake, S. Ohmagari, Growth of heavily boron-doped diamond films on heteroepitaxial substrates, The 7th Asian Applied Physics Conference, 2022.11. |
| 5. | Satoki Nagano, Hiroki Hashiguchi1, Lama Osman, Hiroshi Naragino, Abdelrahman Zkria, Tsuyoshi Yoshitake, Fabrication of Nitrogen-doped Ultrananocrystalline Diamond Electrodes on Titanium Substrates Using Interlayer, The 7th Asian Applied Physics Conference, 2022.11. |
| 6. | Nattakorn Borwornpornmetee, Patsagorn Rungratsamepat, Adisorn Nopparuchikun, Nathaporn Promros, Boonchoat Paosawatyanyong, Phongsaphak Sittimart, Tsuyoshi Yoshitake, Impedance Characteristics at Different Temperatures for p-Type Si/n-Type NC-FeSi2 Heterojunctions, The 7th Asian Applied Physics Conference, 2022.11. |
| 7. | H. M. Tsai, C. Y. Tsay, P. Sittimart, T. Yoshitake, Performance improvement in Ga2O3 solar-blind deep UV photodetectors using asymmetric interdigitated contacts, The 7th Asian Applied Physics Conference, 2022.11. |
| 8. | Takafumi Kusaba, Phongsaphak Sittimart, Hiroshi Naragino, Tsuyoshi Yoshitake, Yuki Katamune, Shinya Ohmagari, Unidirectionally-oriented growth of β-Ga2O3 Thin Films on diamond (100) by RF magnetron sputtering, The 7th Asian Applied Physics Conference, 2022.11. |
| 9. | Hiroki Hashiguchi, Satoki Nagano, Hiroshi Naragino, Tsuyoshi Yoshitake, Durability for Electrochemical Corrosion of Conductive Ultrananocrystalline Diamond Electrodes Prepared by Coaxial Arc Plasma Deposition, The 7th Asian Applied Physics Conference, 2022.11. |
| 10. | Phongsaphak Sittimart, Shiya Ohmagari, Hiroya Nakahara, Hitoshi Umezawa, Hiromitsu Kato, Norio Tokuda, Tsuyoshi Yoshitake, Visible-light photodetection of N-doped diamond via charge neutralized impurity levels for harsh-environmental implementations, The 7th Asian Applied Physics Conference, 2022.11. |
| 11. | Sreenath Mylo Valappil、Shinya Ohmagari、Abdelrahman Zkria、Phongsaphak Sittimart、Eslam Abubakr、Hiromitsu Kato、Tsuyoshi Yoshitake, Alternative Carbon-based Ohmic Electrodes for Phosphorus-doped Diamond-electronics Applications, 2022年度第83回応用物理学会秋季学術講演会, 2022.09. |
| 12. | Phongsaphak Sittimart, Tomoki Iwao, Ryohei Yamaguchi, Hitoshi Umezawa, Tsuyoshi Yoshitake, Shinya Ohmagari, Characterization of Killer Defects in Schottky Barrier Diodes Fabricated on Heteroepitaxial Diamond Substrates, 7th International Conference on Advances in Functional Materials (AFM2022), 2022.07. |
| 13. | Phongsaphak Sittimart, Tomoki Iwao, Ryohei Yamaguchi, Hitoshi Umezawa, Tsuyoshi Yoshitake, Shinya Ohmagari, Large-Area (> 1 mm) Diamond Schottky Barrier Diodes with Low Leakage Current, 15th International Conference on New Diamond and Nano Carbons (NDNC) 2022, 2022.06. |
| 14. | Ali Mohamed Ali Abdelgawad, Kouki Murasawa, Hiroaki Sugita, Seishiro Saito, Hiroshi Naragino, Tsuyoshi Yoshitake, Negative Bias Voltage Enhanced Growth and Mechanical Properties of Nanodiamond Composite Films Deposited by CAPD, 15th International Conference on New Diamond and Nano Carbons (NDNC) 2022, 2022.06. |
| 15. | Lama Osman Abdelbaset, Ali Abdelgawad, Eslam Abubakr, Abdelrahman Zkria, Hiroshi Naragino, Tsuyoshi Yoshitake, Nanodiamond composite film deposited on Titanium substrates using Coaxial Arc Plasma gun for implant applications, 15th International Conference on New Diamond and Nano Carbons (NDNC) 2022, 2022.06. |
| 16. | Sreenath Mylo Valappil, Shinya Ohmagari, Abdelrahman Zkria, Phongasaphak Sittimart, Eslam Abubakar, Hiromatsu Kato, Tsuyoshi Yoshitake, Nanocarbon Electrodes Fabricated by Coaxial Arc Plasma Deposition for Phosphorus-doped Diamond Electronics Application, 15th International Conference on New Diamond and Nano Carbons (NDNC) 2022, 2022.06. |
| 17. | Eslam N. H. ABUBAKR, Shinya Ohmagari, Abdelrahman Zkria, Hiroshi Ikenoue, Tsuyoshi Yoshitake, Effective Charge Collection in Diamond Detectors Through Direct Ohmic Contact Writing by Nanosecond Laser Irradiation, 15th International Conference on New Diamond and Nano Carbons (NDNC) 2022, 2022.06. |
| 18. | Phongsaphak Sittimart, Tomoki Iwao, Hitoshi Umezawa, Hiromitsu Kato, Norio Tokuda, Tsuyoshi Yoshitake, Shinya Ohmagari, Thermally Stable and Radiation-Proof Visible-Light Photodetectors Made from N-Doped Diamond, 15th International Conference on New Diamond and Nano Carbons (NDNC) 2022, 2022.06. |
| 19. | Hiroshi Naragino, Hiroki Hashiguchi, Lama Abdelbaset, Abdelrahman Zkria, Tsuyoshi Yoshitake, Fabrication of Ultrananocrystalline Diamond Electrodes on Titanium Substrates by Coaxial Arc Plasma Deposition, 15th International Conference on New Diamond and Nano Carbons (NDNC) 2022, 2022.06. |
| 20. | Ali Mohamed Ali, Koki Murasawa, Hiroaki Sugita, and Tsuyoshi Yoshitake, Influence of Negative Bias Frequency on Deposition Processes and Structural Properties of Deposited Nanodiamond Composite Film, The 6th Asian Applied Physics Conference (Asian-APC), 2021.12. |
| 21. | Mohamed Egiza, Ali Mohamed Ali, Koki Murasawa, Lama Abdelbaset, Hiroshi Naragino, and Tsuyoshi Yoshitake, PVD nanodiamond composite hard coatings for cutting tools application: structural, mechanical, and tribological properties, The 6th Asian Applied Physics Conference (Asian-APC), 2021.12. |
| 22. | Eslam Abubakr, Shinya Ohmagari, Abdelrahman Zkria, Hiroshi Ikenoue, and Tsuyoshi Yoshitake, Direct contact-writing to diamond through nanosecond pulsed laser irradiation, The 6th Asian Applied Physics Conference (Asian-APC), 2021.12. |
| 23. | Lama Osman, Abdelrahman Zkria, Hiroshi Naragino, and Tsuyoshi Yoshitake, Nanodiamond composite film coated on Titanium substrates by Arc Plasma Deposition for biomedical applications, The 6th Asian Applied Physics Conference (Asian-APC), 2021.12. |
| 24. | Phongsaphak Sittimart, Shinya Ohmagari, Takashi Matsumae, Hitoshi Umezawa, and Tsuyoshi Yoshitake, p-Type diamond/n-type β-Ga2O3 heterojunctions fabricated using direct-bonding technique, 2021 MRS Fall Meeting, 2021.12. |
| 25. | Abdelrahman Zkria, Eslam Abubakr, Ali Mohamed, and Tsuyoshi Yoshitake, Thermal stability of nanodiamond composite films coated on Silicon and Tungsten carbide substrates by arc plasma deposition method, International Thin Films Conference, National Taipei University of Technology (TACT 2021), 2021.11. |
| 26. | Abdelrahman Zkria and Tsuyoshi Yoshitake, Evaluation of N-type nanodiamond films deposited on p-type silicon for optoelectronic applications, International Thin Films Conference, National Taipei University of Technology (TACT 2021), 2021.11. |
| 27. | Lama Osman, Abdelrahman Zkria, Hiroshi Naragino and Tsuyoshi Yoshitake, Ultrananocrystalline diamond film coated on Titanium substrates by Arc Plasma Deposition Technique for biomedical applications, International Thin Films Conference, National Taipei University of Technology (TACT 2021), 2021.11. |
| 28. | Tomoki Iwao, Shinya Ohmagari, Sittimart Phongsaphak and Tsuyoshi Yoshitake, Impact of Laser-Induced Graphitization on Diamond Schottky Barrier Diodes, The 6th International Conference on Advanced Electromaterials (ICAE 2021), 2021.11. |
| 29. | Lama Osman, Abdelrahman Zkria, and Tsuyoshi Yoshitake, Structural and physical characterization of nanodiamond composite thin films synthesized by pulsed-laser ablation method, 7th International Exchange and Innovation Conference on Engineering & Sciences (IEICES 2021), 2021.10. |
| 30. | Phongsaphak Sittimart, Shinya Ohmagari, Tomoki Iwao, Hitoshi Umezawa, and Tsuyoshi Yoshitake, Characterization of X-Ray Radiation Hardness of Diamond Schottky Barrier Diodes up to 10 MGy, The International Union of Materials Research Societies - International Conference in Asia 2021 (IUMRS-ICA 2021), 2021.10. |
| 31. | Phongsaphak Sittimart, Shinya Ohmagari, Tomoki Iwao, Hitoshi Umezawa, and Tsuyoshi Yoshitake, X-Ray Radiation Hardness of Diamond Schottky Barrier Diodes up to 10 MGy, 31st International Conference on Diamond and Carbon Materials (ICDC2021), 2021.09. |
| 32. | A. Mohamed Ali, M. Egiza, K. Murasawa, H. Sugita, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake, Structural properties and adhesion enhanced of Nanodiamond Composite Films Deposited on Si Substrates at Room Temperature by Employing Buffer Layer, International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), 2022.06. |
| 33. | A. Z. Ahmed, E. N. Abubakr, M. B. Egiza, A. Haque, J. Narayan, and T. Yoshitake, Nanosecond pulsed laser treatments of diamond like carbon, nanodiamond composite and singlecrystalline diamond, International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), 2022.06. |
| 34. | E. N. H. Abubakr, S. Ohmagari, A. Zkria, Y. Katamune, H. Ikenoue, and T. Yoshitake, Direct Printing of Low-Resistance Ohmic Contacts to p-type Diamond (100) Through Nanosecond Excimer Laser Irradiation, International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), 2022.06. |
| 35. | Y. Katamune, K. Murasawa, T. Kikuchi, T. Yoshitake, and H. Ikenoue, Polishing of Polycrystalline Diamond Films on WC-Co by KrF-Laser-Induced Surface Modification, International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), 2022.06. |
| 36. | H. Naragino, M. Egiza, H. Ohue, A. M. Ali, K. Murasawa, H. Sugita, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake, Mechanical and structural properties of Si doped nanodiamond composite coatings deposited on cemented carbide, International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), 2022.06. |
| 37. | PHONGSAPHAK Sittimart、Shinya Ohmagari、Tsuyoshi Yoshitake, Improved Uniformity and Breakdown Strength of Schottky Barrier Diodes Fabricated on Diamond Heteroepitaxial Substrates, 応用物理学会春季学術講演会, 2021.03. |
| 38. | Takeru Hamasaki, Takuya Sakai, Kazuki Aramaki, Eslam Abubakr, Hiroshi Ikenoue, Shinya Ohmagari, Ken-ichiro Sakai, Tsuyoshi Yoshitake, FABRICATION AND EVALUATION OF LATERAL TYPE SPINVALVE JUNCTIONS COMPRISING SINGLECRYSTALLINE DIAMOND, The 22nd Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST), 2020.12. |
| 39. | Shuhei Morita, Sreenath M V, Hiroya Nakahara, Ali M. Ali, Abdelrahman Zkria, Dong Wang, Nobuteru Tsubouchi, Shinya Ohmagari, Tsuyoshi Yoshitake, FORMATION OF COLOR CENTERS IN NANODIAMONDS USING COAXIAL ARC PLASMA DEPOSITION, The 22nd Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST), 2020.12. |
| 40. | Hideki Ohue, Ali M. Ali, Mohamed Egiza, Koki Murasawa, Hiroaki Sugita, Tanja Deckert-Gaudig, Volker Deckert, Tsuyoshi Yoshitake, MECHANICAL AND STRUCTURAL PROPERTIES OF NANODIAMOND COMPOSITE FILMS DEPOSITED ON Si SUBSTRATES WITH INTERMEDIATE LAYERS, The 22nd Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST), 2020.12. |
| 41. | Nattakorn Borwornpornmetee, Nathaporn Promros, Peerasil Charoenyuenyao, Rawiwan Chaleawpong, Pattarapol Sittisart, Tsuyoshi Yoshitake, Impact of Plasma Etching on Morphological and Wetting Properties of Nanocrystalline Iron Disilicide Films, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 42. | Junnosuke Nii, Phongsaphak Sittimart, Tsuyoshi Yoshitake, Tomohiro Yoshida, Fabrication of epitaxial β-FeSi2 thin films with a low residual carrier concentration on Si(111) substrates by using co-sputtering, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 43. | Pattarapol Sittisart, Nathaporn Promros, Peerasil Charoenyuenyao, Rawiwan Chaleawpong, Nattakorn Borwornpornmetee, Tsuyoshi Yoshitake, Structural, Morphological and Wettability of Fe3Si Films created by Facing Target, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 44. | Adison Nopparuchikun, Nathaporn Promros, Rawiwan Chaleawpong, Peerasil Charoenyuenyao, Pattarapol Sittisart, Nattakorn Borwornpornmetee, Phongsaphak Sittimart, Tsuyoshi Yoshitake, The effect of voltages on impedance for n-type β FeSi2 / p-type Si heterojunctions were fabricated by RF magnetron sputtering, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 45. | Takayasu HANASHIMA, Jun-ichi SUZUKI, Kazuhisa KAKURAI, Noboru MIYATA, Ken-ichiro SAKAI, Hiroyuki DEGUCHI, Yoshiaki HARA, Satoshi TAKEICHI, Tsuyoshi YOSHITAKE, Magnetic structural analysis in [Fe3Si/FeSi2]20 superlattice using polarized neutron reflectivity, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 46. | T. Hamasaki, S. Ohmagari, K. Aramaki, T. Sakai, H. Ikenoue, K. Sakai, T. Yoshitake, Evaluations of Lateral-Type Spinvalve Junctions Comprising Singlecrystalline Diamond, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 47. | Sreenath Mylo Valappil, Shuhei Morita, Hiroya Nakahara, Abdelrahman Zkria, Ali Mohamed Ali, Dong Wang, Nobuteru Tsubouchi, Shinya Ohmagari, Tsuyoshi Yoshitake, Formation of Nitrogen and Silicon Quantum Centers in Nanodiamonds using Coaxial Arc Plasma Deposition, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 48. | Ali Mohamed Ali, Mohamed Egiza, Koki Murasawa, Hiroaki Sugita, Tsuyoshi Yoshitake, Negative Bias Frequency Effects on Structural and Mechanical Properties of Nanodiamond Composite Films Deposited by Coaxial Arc Plasma, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 49. | Shuhei Morita, Sreenath M V, Hiroya Nakahara, Ali M. Ali, Abdelrahman Zkria, Dong Wang, Tsuyoshi Yoshitake, Nobuteru Tsubouchi, Shinya Ohmagari, Quantum Centers in Nanocrystalline Diamond Prepared by Coaxial Arc Plasma Deposition, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 50. | Eslam Abubakr, Abdelrahman Zkria, Shinya Ohmagari, Yūki Katamune, Hiroshi Ikenoue, Tsuyoshi Yoshitake, Laser-Induced heavy-doping for forming ohmic contacts, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 51. | Phongsaphak Sittimart, Shinya Ohmagari, Tsuyoshi Yoshitake, Schottky Barrier Diodes Fabricated on Homoepitaxial Diamond Layer Grown onto Diamond Heteroepitaxial Substrate, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 52. | H. Ohue, A. M. Ali, M. Egiza, K. Murasawa, H. Sugita, Tanja Deckert-Gaudig, Volker Deckert, T. Yoshitake, Mechanical and Structural Properties of Nanodiamond Composite Films Deposited on Si Substrates with Intermediate Layers, The 5th Asian Applied Physics Conference (Asian-APC), 2020.11. |
| 53. | Phongsaphak Sittimart, Shinya Ohmagari and Tsuyoshi Yoshitake, Diamond Schottky Barrier Diodes Fabricated on Heteroepitaxial Substrates, JSAP 2020 International Conference on Solid State Devices and Materials (SSDM2020), 2020.09. |
| 54. | Tsuyoshi Yoshitake, Nanodiamond film formation by physical vapor deposition and their applications, Campus Asia EEST Asia 2020 Summer School, 2020.08. |
| 55. | Takuya Sakai, Takeru Hamasaki, Kazuki Kudo, Ken-ichiro Sakai, Tsuyoshi Yoshitake, Spin-valve effects in Fe/N-doped carbon/Fe3Si trilayered junctions , JSAP Kyushu Chapter Annual Meeting 2019 /The 4th Asian Applied Physics Conference (Asian-APC), 2019.11. |
| 56. | Yuki Tanaka, Tomohiro Yoshida, Seiya Uchida, Koki Murasawa, Yasuo Hukui, Masatoshi Sakurai, Masaki Kudo, Takaaki Toriyama, Tsuyoshi Yoshitake, B-doping effects on hardness of nanocomposite AlBN thin films deposited on high-speed steel , JSAP Kyushu Chapter Annual Meeting 2019 /The 4th Asian Applied Physics Conference (Asian-APC), 2019.11. |
| 57. | H. Ohue, M. Egiza, A. M. Ali, K. Murasawa, Y. Fukui, H. Gonda, M. Sakurai, T. Yoshitake, Mechanical and structural properties of Si doped nanodiamond composite films coatings deposited on cemented carbide , JSAP Kyushu Chapter Annual Meeting 2019 /The 4th Asian Applied Physics Conference (Asian-APC), 2019.11. |
| 58. | Eslam Abubakr, Abdelrahman Zkria, Shinya Ohmagari, Yuki Katamune, Hiroshi Ikenoue, Tsuyoshi Yoshitake, Laser induced conductive layers on surface of singlecrystalline diamond , JSAP Kyushu Chapter Annual Meeting 2019 /The 4th Asian Applied Physics Conference (Asian-APC), 2019.11. |
| 59. | Ali Mohamed Ali, Mohamed Egiza, Koki Murasawa, Yasuo Fukui, Hidenobu Gonda, Masatoshi Sakurai, Tsuyoshi Yoshitake, Bias effects on deposition and mechanical properties of nanodiamond composite films deposited by coaxial arc plasma, JSAP Kyushu Chapter Annual Meeting 2019 /The 4th Asian Applied Physics Conference (Asian-APC), 2019.11. |
| 60. | Abdelrahman Zkria, Tsuyoshi Yoshitake, Eslam Abubakr, Jagdish Narayan, Ultrafast pulsed laser irradiation on amorphous carbon and singlecrystalline diamond, JSAP Kyushu Chapter Annual Meeting 2019 /The 4th Asian Applied Physics Conference (Asian-APC), 2019.11. |
| 61. | A. Zkria, E. Abubakr, T. Yoshitake, J. Narayan, Structural evolution of nanostructure carbon films by ultrafast pulsed laser annealing, 30th International conference in Diamond and Carbon materials (ICDCM-2019), 2019.09. |
| 62. | M. Egiza, K. Murasawa, A.M. Ali, Y. Fukui, H. Gonda, M. Sakurai, T. Yoshitake, Si doping effects on mechanical properties of ultrananocrystalline diamond/ amorphous carbon composite films deposited on cemented carbide, 30th International conference in Diamond and Carbon materials (ICDCM-2019), 2019.09. |
| 63. | T. Sakai, H. Ishimoto, T. Tabei, K. Sakai, T. Yoshitake, Fabrication and evaluation of lateral type spin-valves comprising epitaxially-grown beta-FeSi2 layers, The Fifth Asia-Pacific Conference on Semiconducting Silicides and Related Materials (APAC-SILICIDE 2019), 2019.07. |
| 64. | Y. Tanaka, S. Uchida, T. Yoshida, and T. Yoshitake, Epitaxial growth of β-FeSi2 thin films prepared by co-sputtering with high purity Fe and Si targets, The Fifth Asia-Pacific Conference on Semiconducting Silicides and Related Materials (APAC-SILICIDE 2019), 2019.07. |
| 65. | K. Sakai, T. Sakai, M. Nishijima, and T. Yoshitake, Local and non-local spin valves in Fe3Si/FeSi2/Fe3Si trilayer films, The Fifth Asia-Pacific Conference on Semiconducting Silicides and Related Materials (APAC-SILICIDE 2019), 2019.07. |
| 66. | Ali M. Ali, M. Egiza, K. Murasawa, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake, Structural and mechanical properties of ultrananocrystalline diamond films deposited on negatively biased substrates by coaxial arc plasma, The 13th New Diamond and Nano Carbon Conference(NDNC 2019), 2019.05. |
| 67. | M. Egiza, A. M. Ali, K. Murasawa, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake, Application of undoped and Si-doped ultrananocrystalline diamond/amorphous carbon composite films to hard coating on cemented carbide, The 13th New Diamond and Nano Carbon Conference(NDNC 2019), 2019.05. |
| 68. | M. Egiza, A. M. Ali, K. Murasawa, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake, Atomic structures, mechanical, and tribological properties of B-doped ultrananocrystalline diamond/ nonhydrogenated amorphous carbon composite films deposited on cemented carbide, The 13th New Diamond and Nano Carbon Conference(NDNC 2019), 2019.05. |
| 69. | Eslam Abubakr, Abdelrahman Zkria, Yūki Katamune, Shinya Ohmagari, Kaname Imokawa, Hiroshi Ikenoue, and Tsuyoshi Yoshitake, Shallow boron doping of Singlecrystalline diamond by excimer laser irradiation, The 13th New Diamond and Nano Carbon Conference(NDNC 2019), 2019.05. |
| 70. | Ali M. Ali, M. Egiza, K. Murasawa, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake, Pulsed-Bias Effects on Mechanical Properties of Ultrananocrystalline Diamond Films Deposited on Cemented Carbide Substrates by Coaxial Arc Plasma, The 3rd Asian Applied Physics Conference, 2018.12. |
| 71. | Hiroki Ishimoto, Kazuki Kudo, Tetsuo Tabei, Ken-ichiro Sakai, Tsuyoshi Yoshitake, Fabricartion of lateral type spin-valves comprising epitaxially-grown beta-FeSi2 interlayers by electron beam lithography, The 3rd Asian Applied Physics Conference, 2018.12. |
| 72. | Eslam Abubakr, Abdelrahman Zkria, Yūki Katamune, Shinya Ohmagari, Hiroshi Ikenoue, and Tsuyoshi Yoshitake, UV Laser-Induced Boron Incorporation to Singlecrystalline Diamond, The 3rd Asian Applied Physics Conference, 2018.12. |
| 73. | Naofumi Nishikawa, Satoshi Takeichi, Keisuke Ohdaira, and Tsuyoshi Yoshitake, Hydrogenation effects on photoresponsivity in heterojunction diodes comprising p-type ultrananocrystalline diamond films and n-Si substrates, The 3rd Asian Applied Physics Conference, 2018.12. |
| 74. | S. Uchida, Y. Tanaka, T. Yoshitake, Epitaxial growth of beta-FeSi2 thin films prepared by co-sputtering with high purity Fe and Si targets, The 3rd Asian Applied Physics Conference, 2018.12. |
| 75. | M. Egiza, A. M. Ali, K. Murasawa, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake, Atomic structures and mechanical properties of Si-doped ultrananocrystalline diamond/ amorphous carbon composite films deposited on cemented carbide, The 3rd Asian Applied Physics Conference, 2018.12. |
| 76. | Yungil Lee, Ko-ichiro Hoshino, Satoshi Takeichi, Keisuke Abe, Kentaro Toshima, Takashi Nishiyama, Masamichi Kohno, Koji Takahashi, and Tsuyoshi Yoshitake, Thermal Conductivity measurement of ultrananocrystalline diamond/amorphous carbon composite films, The 3rd Asian Applied Physics Conference, 2018.12. |
| 77. | Abdelrahman Zkria Ahmed, Eslam Abubakr, Yuki Katamune, Shinya Ohmagari, and Tsuyoshi Yoshitake, Application of Laser-Induce Doping to Singlecrystalline Diamond, 2018 MRS Fall Meeting & Exhibit, 2020.11. |
| 78. | Satoshi Takeichi, Takashi Nishiyama, Mitsuru Tabara, Shuichi Kawawaki, Masamichi Kohno, Koji Takahashi, and Tsuyoshi Yoshitake, Hydrogenation Effects on Interfacial Thermal Conductance at Grain Boundaries of Ultrananocrystalline Diamond Films, 2018 MRS Fall Meeting & Exhibit, 2020.11. |
| 79. | Hiroki Ishimoto, Satoshi Takeichi, Kazuki Kudo, Ken-ichiro Sakai, and Tsuyoshi Yoshitake, Structural Evaluation of Spin-Valves Comprising B-Doped Carbon Interlayers, 2018 MRS Fall Meeting & Exhibit, 2020.11. |
| 80. | Hiroki Ishimoto, Tetsuo Tabei, Ken-ichiro Sakai and Tsuyoshi Yoshitake, Spin Injection into Epitaxially-Grown β-FeSi2 in Lateral Structural Spin-Valves, 2018 MRS Fall Meeting & Exhibit, 2020.11. |
| 81. | R. Fukuta, N. Yamamoto, F. Ishikawa, T. Yoshitake, H. Ikenoue, M. Matsushita, H. Ohfuji, T. Shinmei, T. Irifune, Conductive surface formation on nano-polycrystalline diamond by laser irradiation, 29th International Conference on Diamond and Carbon Materials, 2018.09. |
| 82. | A. M. Ali, M. Egiza, K. Murasawa, Y. Fukui, H. Gonda, M. Sakurai, and T. Yoshitake, Pulsed bias effects on the growth and mechanical properties of ultrananocrystalline diamond/amorphous carbon films deposited by coaxial arc plasma deposition, 29th International Conference on Diamond and Carbon Materials, 2018.09. |
| 83. | E. Abubakr, A. Zkria, Y. Katamune, S. Ohmagari, H. Ikenoue, and T. Yoshitake, Phosphorus doping for singlecrystalline diamond using phosphoric acid liquids by excimer laser irradiations, 29th International Conference on Diamond and Carbon Materials, 2018.09. |
| 84. | Mohamed Egiza, Kouki Murasawa, Ali M. Ali, Yasuo Fukui, Hidenobu Gonda, Masatoshi Sakurai, and Tsuyoshi Yoshitake, Effects of Inserting Various Buffer layers on Growth and Mechanical Properties of B-doped Ultrananocrystalline Diamond/Amorphous Carbon Composite Films Deposited on Cemented Carbide Substrates by Coaxial Arc Plasma Deposition, The 9th International Conference on Technological Advances of Thin Films & Surface Coatings, 2018.07. |
| 85. | Tsuyoshi Yoshitake, Mohamed Egiza, Koki Murasawa, Mohamed Ali, Hiroshi Naragino, Aki Tominaga, Yasuo Fukui, Hidenobu Gonda, Masatoshi Sakurai, Hard Coating of Ultrananocrystalline Diamond/Nonhydrogenated amorphous Carbon Composite Films on Cemented Carbide, 11th International Symposium on Atomic Level Characterizations for New Materials and Devices ’17 (ALC17), 2017.12. |
| 86. | Kazuki Kudo, Satoshi Takeichi, Kazutoshi Nakashima, Ken-ichiro Sakai, Masahiko, Nishijima, Tsuyoshi Yoshitake, Structural evaluations of Fe/boron-doped carbon/Fe3Si spin-valve junctions, 11th International Symposium on Atomic Level Characterizations for New Materials and Devices ’17 (ALC17), 2017.12. |
| 87. | Kazuki Kudo, Satoshi Takeichi, Kazutoshi Nakashima, Ken-ichiro Sakai, Tsuyoshi Yoshitake , Magnetoresistance effects in spin-valves comprising N-doped carbon interlayers, 11th International Symposium on Atomic Level Characterizations for New Materials and Devices ’17 (ALC17), 2017.12. |
| 88. | Satoshi Takeichi, Naofumi Nishikawa, Yuki Katamune, Tsuyoshi Yoshitake, Photodetection properties of heterojunction diodes comprising boron-doped ultrananocrystalline diamond films prepared by coaxial arc plasma deposition and n-type silicon substrates, 11th International Symposium on Atomic Level Characterizations for New Materials and Devices ’17 (ALC17), 2017.12. |
| 89. | Satoshi Takeichi, Takashi Nishiyama, Mitsuru Tabara, Shuichi Kawawaki, Masamichi, Kohno, Koji Takahashi, Tsuyoshi Yoshitake, Effects of hydrogenation on thermal transport in ultrananocrystalline diamond/amorphous carbon composite films , 11th International Symposium on Atomic Level Characterizations for New Materials and Devices ’17 (ALC17), 2017.12. |
| 90. | Tsuyoshi Yoshitake, Mohamed Egiza, Koki Murasawa, Mohamed Ali, Hiroshi Naragino, Aki Tominaga, Yasuo Fukui, Hidenobu Gonda, Masatoshi Sakurai, Si Doping Effects on Mechanical Properties of Ultrananocrystalline Diamond/Amorphous Carbon Composite Films Deposited on Cemented Carbide Substrates by Coaxial Arc Plasma Deposition , 11th International Symposium on Atomic Level Characterizations for New Materials and Devices ’17 (ALC17), 2017.12. |
| 91. | T. Nogami, N. Ishizaka, S. Uchida, T. Yoshitake, Epitaxial growth of beta-FeSi2 thin films prepared by co-sputtering with high purity Fe and Si targets, The 2nd Asian Applied Physics Conference (Asian-APC) , 2017.12. |
| 92. | K. Murasawa, M. Egiza, M. Ali, T. Yoshitake, Near-edge X-ray absorption fine-structure spectroscopic study on ultrananocrystalline diamond/nonhydrogenated amorphous carbon composite films prepare by coaxial arc plasma deposition , The 2nd Asian Applied Physics Conference (Asian-APC), 2017.12. |
| 93. | H. Ishimoto, K. Kudo, K. Sakai, T. Yoshitake, Fabrication of lateral spinvalves comprising FeSi2 spin-transfer layers by electron beam lithography , The 2nd Asian Applied Physics Conference (Asian-APC), 2017.12. |
| 94. | Eslam Abubakr, Hiroshi Ikenoue, Tsuyoshi Yoshitake, Laser-induce phosphorus doping in phosphoric acid liquids for singlecrystalline diamond , The 2nd Asian Applied Physics Conference (Asian-APC), 2017.12. |
| 95. | N. Promros, P. Sittimart, T. Nogami, T. Yoshitake, Carrier Transport Properties at Low Temperatures in p-Type Si/n-Type ß-FeSi2 Heterojunctions Created by Radio-Frequency Magnetron Sputtering , The 2nd Asian Applied Physics Conference (Asian-APC), 2017.12. |
| 96. | N. Promros, R. Chaleawpong, P. Sittimart, T. Hanada, S. Ohmagari, T. Yoshitake, Estimation of Interface State Density in B-doped p-Type UNCD/a-C:H/n-Type Si Heterojunctions Formed by Pulsed Laser Deposition , The 2nd Asian Applied Physics Conference (Asian-APC), 2017.12. |
| 97. | Kazuki Kudo, Satoshi Takeichi, Kazutoshi Nakashima, Ken-ichiro Sakai,Tsuyoshi Yoshitake, Magnetoresistance effects in Fe/nanodiamond/Fe3Si trilayered junctions at room temperature, Cross Straits Symposium on Energy and Environmental Science and Technology, 2017.11. |
| 98. | Naofumi Nishikawa, Satoshi Takeichi, Takanori Hanada, Shuya Tategami, Atsuhiko Fukuyama, Tsuyoshi Yoshitake , Minority Carrier Lifetimes in Nitrogen-doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films, Cross Straits Symposium on Energy and Environmental Science and Technology, 2017.11. |
| 99. | Ali M. Ali, Mohamed Egiza, Koki Murasawa, Yasuo Fukui, Hidenobu Gonda, Masatoshi Sakurai, Tsuyoshi Yoshitake, Negative bias effects on the growth and mechanical properties of ultrananocrystaline diamond/amorphous carbon films deposited on cemented carbide substrates by coaxial arc plasma deposition, Cross Straits Symposium on Energy and Environmental Science and Technology, 2017.11. |
| 100. | Naofumi Nishikawa, Satoshi Takeichi, Yuki Katamune, Tsuyoshi Yoshitake, Photodetection in heterojunctions comprising boron-doped ultrananocrystalline diamond/hydrogenated amorphous carbon composite films and n-type Si substrates, International Exchange and Innovation Conference on Engineering & Sciences (IEICES 2017) , 2017.10. |
| 101. | Tsuyoshi Yoshitake, Eslam Abubakr, Hiroshi Ikenoue, Application of laser-induced doping in liquids containing dopants to diamond, OIST Diamond Workshop, 2017.10. |
| 102. | Satoshi Takeichi, Takashi Nishiyama, Mitsuru Tabara, Shuichi Kawawaki, Masamichi Kohno, Koji Takahashi, Tsuyoshi Yoshitake, Thermal conductivities of ultrananocrystalline diamond/amorphous carbon composite films prepared by coaxial arc plasma deposition, OIST Diamond Workshop, 2017.10. |
| 103. | Naofumi Nishikawa, Satoshi Takeichi, Shuya Tategami, Kenjiro Takauchi, Naoki Matsuda, Yuki Katamune, Atsuhiko Fukuyama, and Tsuyoshi Yoshitake, Doping effects on minority-carrier lifetimes in ultrananocrystalline diamond/hydrogenated amorphous carbon composite films, JSAP-OSA Joint Symposia 2017,第７８回応用物理学会秋季学術講演会, 2017.09. |
| 104. | N. Nishikawa, S. Takeichi, T. Hanada, H. Gima, S. Tategami, A. Iwamoto, H. Takeda, A. Fukuyama, T. Yoshitake, Minority-carrier lifetimes in ultrananocrystalline diamond/amorphous carbon composite films prepared by coaxial arc plasma deposition, The 15th International Conference on Advance Materials, 2017.08. |
| 105. | Ken-ichiro Sakai, Masahiko Nishijima, Tsuyoshi Yoshitake, Local and non-local structural spin valves comprising Fe3Si/FeSi2/Fe3Si trilayer films, 9th International School and Conference on Spintronics and Quantum Information Technology (Spin TECH IX) , 2017.06. |
| 106. | Takayasu Hanashima, Tsuyoshi Yoshitake, Satoshi Takeichi, Noboru Miyata, Ken-ichiro Sakai, Hiroyuki Deguchi, Polarized Neutron Reflectivity Study on Magnetic Structure in Fe3Si/FeSi2 Superlattices, 9th International School and Conference on Spintronics and Quantum Information Technology (Spin TECH IX), 2017.06. |
| 107. | Satoshi Takeichi, Kazutoshi Nakashima, Kazuki Kudo, Ken-ichiro Sakai, Tsuyoshi Yoshitake, Spin valve effects in trilayered films comprising nitrogen-doped carbon interlayers, 9th International School and Conference on Spintronics and Quantum Information Technology (Spin TECH IX), 2017.06. |
| 108. | Kazuki Kudo, Kazutoshi Nakashima, Satoshi Takeichi, Ken-ichiro Sakai, Masahiko Nishijima, Tsuyoshi Yoshitake, Magnetoresistance effects in Fe/B-doped carbon/Fe3Si trilayered spin valve junctions, 9th International School and Conference on Spintronics and Quantum Information Technology (Spin TECH IX), 2017.06. |
| 109. | Abdelrahman Zkria, Tsuyoshi Yoshitake, Applications of Ultrananocrystalline Diamond/hydrogenated amorphous carbon to electronic devises, The 1st International Conference on Physics, Materials Sciences and Engineering (ICPMSE-2017), 2017.03. |
| 110. | Hiroki Gima, Tsuyoshi Yoshitake, Chemical Bonding Structural Analysis of Nitrogen-Doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Prepared by Coaxial Arc Plasma Deposition, International Forum for Green Asia 2016, 2016.12. |
| 111. | Takanori Hanada, Shinya Ohmagari, Abdelrahman Zkria, Tsuyoshi Yoshitake, Barrier Height of Au Contact on p-Type Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films, International Forum for Green Asia 2016, 2016.12. |
| 112. | Satoshi Takeichi, Takashi Nishiyama, Mitsuru Tabara, Shuichi Kawawaki, Masamichi Kohno, Koji Takahashi, Tsuyoshi Yoshitake, Thermal Conductivity Measurements of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films by Time-Domain Thermoreflectance, International Forum for Green Asia 2016, 2016.12. |
| 113. | Satoshi Takeichi, Takashi Nishiyama, Mitsuru Tabara, Shuichi Kawawaki, Masamichi Kohno, Koji Takahashi, Tsuyoshi Yoshitake, Thermal conduction evaluation of ultrananocrystalline diamond/hydrogenated amorphous carbon composite films by time-domain thermoreflectance, The 18th Cross Straits Symposium on Energy and Environmental Science & Technology, 2016.12. |
| 114. | Rezwan Ahmed, Kazuki Kudo, Satoshi Takeichi, Ken-ichiro Sakai, Masahiko Nishijima, Tsuyoshi Yoshitake, Seigi Mizuno, Fabrication of spin valve junctions comprising Fe3Si/B-doped carbon/Fe trilayers, The 18th Cross Straits Symposium on Energy and Environmental Science & Technology, 2016.12. |
| 115. | Kazutoshi Nakashima, Kazuki Kudo, Satoshi Takeichi, Ken-ichiro Sakai, Tsuyoshi Yoshitake, Spin valves comprising nitrogen-doped carbon interlayers, The 18th Cross Straits Symposium on Energy and Environmental Science & Technology, 2016.12. |
| 116. | N. Nishikawa, T. Hanada, S. Tategami, A. Iwamoto, S. Takeda, A. Fukuyama, T. Yoshitake, Minority-Carrier Life Time in Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films, The 1st Asian Applied Physics Conference, 2016.12. |
| 117. | Abdelrahman Zkria, Hiroki Gima, Tsuyoshi Yoshitake, Nitrogen doped Ultrananocrystalline diamond/hydrogenated amorphous carbon composite films prepared by coaxial arc plasma deposition, The 1st Asian Applied Physics Conference, 2016.12. |
| 118. | Mohamed Egiza, Hiroshi Naragino, Aki Tominaga, Kouki Murasawa, Hidenobu Gonda, Masatoshi Sakurai, Tsuyoshi Yoshitake, Application of hard coating ultrananocrystalline diamond/amorphous carbon composite films prepared by coaxial arc plasma deposition on tungsten carbide, The 1st Asian Applied Physics Conference, 2016.12. |
| 119. | T. Hanada, S. Ohmagari, A. Zkria, T. Yoshitake, Photoconductivities in Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films, Pasific Rim Meeting on Electrochemical and Solid-State Science (PRiME 2016)/230th ECS Meeting, 2016.10. |
| 120. | T. Hanada, S. Ohmagari, A. Zkria, T. Yoshitake, Direct Determination of the Barrier Height of Au Contact on p-Type Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films, Pasific Rim Meeting on Electrochemical and Solid-State Science (PRiME 2016)/230th ECS Meeting, 2016.10. |
| 121. | A. Zkria, T. Yoshitake, Heterojunction Diodes Comprising Nitrogen-Doped Ultrananocrystalline Diamond/Hydrogentad Amorphous Carbon and p-Type Silicon, Pasific Rim Meeting on Electrochemical and Solid-State Science (PRiME 2016)/230th ECS Meeting, 2016.10. |
| 122. | Y. Katamune, S. Takeichi, S. Al Riyami, and T. Yoshitake, Defect Structures of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Prepared By Physical Vapor Deposition , Pasific Rim Meeting on Electrochemical and Solid-State Science (PRiME 2016)/230th ECS Meeting, 2016.10. |
| 123. | H. Gima, A. Zkria, T. Yoshitake , Spectroscopic Analysis of Nitrogen-Doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Prepared By Coaxial Arc Plasma Deposition, Pasific Rim Meeting on Electrochemical and Solid-State Science (PRiME 2016)/230th ECS Meeting, 2016.10. |
| 124. | M. Egiza, H. Naragino, A. Tominaga, K. Murasawa, H. Gonda, M. Sakurai, T. Yoshitake, Effects of Deposition Temperature on Synthesis of Ultrananocrystalline Diamond/Amorphous Carbon Composite Films on Cemented Carbide Substrate By Coaxial Arc Plasma Deposition, Pasific Rim Meeting on Electrochemical and Solid-State Science (PRiME 2016)/230th ECS Meeting, 2016.10. |
| 125. | S. Takeichi, T. Nishiyama, M. Kohno, K. Takahashi, Y. Katamune, T. Yoshitake, Thermal Conductivity of Ultrananocrystalline Diamond/Nonhydrogenated Amorphous Carbon Composite Films Prepared By Coaxial Arc Plasma Deposition, Pasific Rim Meeting on Electrochemical and Solid-State Science (PRiME 2016)/230th ECS Meeting, 2016.10. |
| 126. | Tsuyoshi Yoshitake, Kazutoshi Nakashima, Kazuki Kudo, Kazuya Ishibashi, Yuki Asai, Ken-ichiro Sakai, Hiroyuki Deguchi, Spin Valve Junctions Comprising Fe-Si Materials, Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 ) , 2016.07. |
| 127. | Kazuki Kudo, Kazuya Ishibashi, Kazutoshi Nakashima, Yuki Asai, Ken-ichiro Sakai, Hiroyuki Deguchi, Tsuyoshi Yoshitake, Temperature-Dependent Magnetoresistance Effects in Fe3Si/FeSi2/Fe3Si Trilayered Spin Valve Junctions , Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 ), 2016.07. |
| 128. | Kazuki Kudo, Satoshi Takeichi, Hirokazu Kishimoto, Ken-ichiro Sakai, Hiroyuki Deguchi, Tsuyoshi Yoshitake, Fe/boron-doped Ultrananocrystalline Diamond/Fe Trilayered Spin Valve Junctions, Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 ), 2016.07. |
| 129. | Tomohiro Nogami, Ryuji Baba, Hirokazu Kishimoto, Tarek M. Mostafa, Nathaporn Promros, Tsuyoshi Yoshitake, Effects of Nitrogen Doping on Optical and Electrical Properties of FeSi2 Films Prepared by Sputtering, Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 ), 2016.07. |
| 130. | Aki Tominaga, Ruji Baba, Hirokazu Kishimoto, Tarek Mostafa, Hiroshi Naragino, Kazutaka Kamitani, Toshihiro Okajima, Tsuyoshi Yoshitake, EXAFS Study on Nitrogen-doped Nanocrystalline FeSi2 Films Prepared by Sputtering, Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Electronics ( APAC Silicide 2016 ), 2016.07. |
| 131. | Abdelrahman Zkria Ahmed, Tsuyoshi Yoshitake, Low-temperature carrier transport properties of n-type ultrananocrystalline diamond/ptype Si heterojunction diodes, The 2016 Compound Semiconductor Week (CSW2016), June 26-30, 2016, , Japan, 2016.06. |
| 132. | M. Egiza, H. Naragino, A. Tominaga, K. Murasawa, H. Gonda, M. Sakurai, T. Yoshitake, Effects of B doping on growth and mechanical properties of Ultrananocrystalline Diamond/Amorphous Carbon Composite Films on Cemented Carbide Substrate by Coaxial Arc Plasma Deposition, Advanced Metallization Conference 2016, 2016.06. |
| 133. | A. Zkria, H. Gima, T. Hanada, T. Yoshitake, Evaluation of nitrogen-doped Ultrananocrystalline diamond /p -type silicon diodes, Advanced Metallization Conference 2016, 2016.06. |
| 134. | Abdelrahman Zkria, Hiroki Gima, Tsuyoshi Yoshitake, Nitrogen-doping Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon composite films Prepared by Coaxial Arc Plasma Deposition, The 3rd International Conference on Advanced Electromaterials (ICAE2015), 2015.11. |
| 135. | Abdelrahman Zkria, Fouad Abdel-Wahab, Tsuyoshi Yoshitake, Ellipsometric studies of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Deposited by a Coaxial Arc Plasma Gun, The 3rd International Conference on Advanced Electromaterials (ICAE2015), 2015.11. |
| 136. | Nathaporn Promros, Phongsaphak Sittimart, Ryuji Baba, Takanori Hanada, Kenji Hanada, Motoki Takahara, Tarek M. Mostafa, Li Chen, Tsuyoshi Yoshitake, Characterization of n-Type Nanocrystalline Iron Disilicide/Intrinsic Ultrananocrystalline Diamond/Amorphous Carbon Composite/p-Type Silicon Heterojunctions at Low Temperatures, The 3rd International Conference on Advanced Electromaterials (ICAE2015), 2015.11. |
| 137. | Takanori Hanada, Nathaporn Promros, Shinya Ohmagari, Tsuyoshi Yoshitake, Photodetection in Heterojunction Photodiodes Comprising p-Type B-doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films and n-Type Silicon at Low Temperatures, The 3rd International Conference on Advanced Electromaterials (ICAE2015), 2015.11. |
| 138. | Kazuya Ishibashi, Kazutoshi Nakashima, Ken-ichiro Sakai, Tsuyoshi Yoshitake, Fabrication of spin valve junctions based on Fe/Fe3Si/FeSi2/Fe3Si quadrilayered films by facing targets direct-current sputtering, 68th Annual Gaseous Electronics Conference/9th International Conference on Reactive Plasmas/33rd Symposium on Plasma Processing, 2015.10. |
| 139. | Mohamed Egiza, Hiroshi Naragino, Aki Tominaga, Kouki Murasawa, Hidenobu Gonda, Masatoshi Sakurai, Tsuyoshi Yoshitake, ULTRANANOCRYSTALLINE DIAMOND/AMORPHOUS CARBON COMPOSITE FILMS SYNTHESIS ON CEMENTED CARBIDE SUBSTRATE BY COAXIAL ARC PLASMA DEPOSITION, Intellectual Exchange and Innovation Conference on Engineering & Sciences (IEICES), 2015.10. |
| 140. | Abdelrahman Zkria, Tsuyoshi Yoshitake, Heterojunction Diodes of Nitrogen-Doped Ultrananocrystalline Diamond Films Prepared by Coaxial Arc Plasma Deposition, Intellectual Exchange and Innovation Conference on Engineering & Sciences (IEICES), 2015.10. |
| 141. | Kazuya Ishibashi, Kazutoshi Nakashima, Ken-ichiro Sakai, Tsuyoshi Yoshitake, Magnetic properties of Fe/FeSi2/Fe3Si trilayered films prepared by facing targets sputtering deposition, 68th Annual Gaseous Electronics Conference/9th International Conference on Reactive Plasmas/33rd Symposium on Plasma Processing, 2015.10. |
| 142. | Abdelrahman Zkria, Tsuyoshi Yoshitake, Nitrogen-Doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films/p-Silicon heterojunction, 68th Annual Gaseous Electronics Conference/9th International Conference on Reactive Plasmas/33rd Symposium on Plasma Processing, 2015.10. |
| 143. | Hiroki Gima, Hitoshi Umezawa, Khaled Driche, Yukako Kato, Yoshiaki Mokuno, Fabrice Donatini, Etienne Gheereart, Tsuyoshi Yoshitake, Electron-Beam-Induced Current Evaluation of Electric Field Enhancement on Diamond Schottky Barrier Diode, 3rd French-Japanese Workshop on Diamond Power Devices, 2015.07. |
| 144. | Hiroki Gima, Tsuyoshi Yoshitake, Effect of Nitrogen Incorporation into Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Fabricated by Coaxial Arc Plasma Deposition Method, 3rd French-Japanese Workshop on Diamond Power Devices, 2015.07. |
| 145. | Hiroshi Naragino, Mohamed Egiza, Aki Tominaga, Tsuyoshi Yoshitake, Fabrication of Nanodiamond Powders and Hard Ultrananocrystalline/nonhydrogenated Amorphous Carbon Composite Films Using Coaxial Arc Plasma Gun, 3rd French-Japanese Workshop on Diamond Power Devices, 2015.07. |
| 146. | Tsuyoshi Yoshitake, Widely-variable electrical conductivity of ultrananocrystalline diamond/hydrogenated amorphous carbon composite films prepared by PVD, 3rd French-Japanese Workshop on Diamond Power Devices, 2015.07. |
| 147. | Tsuyoshi Yoshitake, Preparation of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Prepared by Physical Vapor Deposition and Their Application to Photodiodes and Hard Coating, Hasselt Diamond Workshop 2015 SBDD XX, 2015.02. |
| 148. | Motoki Takahara, Tsuyoshi Yoshitake, Fabrication of n-Type beta-FeSi2/p-Type Si Heterojunction Diodes for Near-Infrared Light Detection, The first Joint Symposium of Kyushu University and Yonsei University on materials Science and Chemical Engineering (SKY-1), 2015.02. |
| 149. | Motoki Takahara, Tsuyoshi Yoshitake, Fabrication of n-Type beta-FeSi2/p-Type Si Heterojunction Diodes for Near-Infrared Light Detection, The first Joint Symposium of Kyushu University and Yonsei University on materials Science and Chemical Engineering (SKY-1), 2015.02. |
| 150. | Tsuyoshi Yoshitake, Preparation of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Prepared by Physical Vapor Deposition and Their Application to Photodiodes and Hard Coating, The first Joint Symposium of Kyushu University and Yonsei University on materials Science and Chemical Engineering (SKY-1), 2015.02. |
| 151. | Hiroshi Naragino, Aki Tominaga, Kazushi Sumitani, Satoru Hattori, Tsuyoshi Yoshitake, Synthesis and Evaluation of Nanocrystalline Diamond Powder Prepared by Coaxial Arc Plasma Gun, Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014), 2014.12. |
| 152. | Tsuyoshi Yoshitake, Ken-ichiro Sakai, Yuki Asai, Kazuya Ishibashi, Yuta Noda, Kaoru Takeda, Spin Valve Junctions Based on Fe3Si/FeSi2/Fe3Si Trilayered Films, Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014), 2014.12. |
| 153. | Tsuyoshi Yoshitake, Ken-ichiro Sakai, Yuki Asai, Kazuya Ishibashi, Yuta Noda, Kaoru Takeda, Spin Valve Junctions Based on Fe3Si/FeSi2/Fe3Si Trilayered Films, Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014), 2014.12. |
| 154. | Tsuyoshi Yoshitake, Yuki Katamune, Takanori Hanada, Satoshi takeichi, Shinya Ohmagari, Application of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films to Photodiodes, Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014), 2014.12. |
| 155. | Tsuyoshi Yoshitake, Mahmoud Shaban, Nathaporn Promros, Motoki Takahara*, T.M. Miostafa, Ryuji Baba, Near Infrared Photodiodes Comprising Iron Disilicides Prepared by Sputtering, Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014), 2014.12. |
| 156. | Nathaporn Promros, Kenji Hanada, P. Sittimart, Motoki Takahara, Takanori Hanada, Li Chen, Tsuyoshi Yoshitake, Electrical Transport Properties and Photodetection Performances of n-Type NC-FeSi2/i-UNCD/a-C/p-Type Si Heterojunction Photodiodes at Low Temperatures, Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014), 2014.12. |
| 157. | Aki Tominaga, Hiroshi Naragino, Hiroyuki Deguchi, Kaoru Takeda, Tsuyoshi Yoshitake, Nanocrystalline Diamond Powder Fabricated using Coaxial Arc Plasma Equipped with Chromium-Blended Graphite Targets, Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014), 2014.12. |
| 158. | Mohamed Egiza , Hiroshi Naragino , 冨永 亜希, 吉武 剛, 村澤功其, 権田英修, Deposition of Hard Carbon Thin Films on Cemented Carbide by Coaxial Arc Plasma Deposition, ２ ０ １ ４ 年（ 平成２ ６ 年度）応用物理学会九州支部学術講演会, 2014.12. |
| 159. | Hiroki Gima, Abdelrahman Zkria, Sausan Al-Riyami, Aki Tominaga, Tsuyoshi Yoshitake, Chemical Bonding Structures of Nitrogen-doping Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon composite films Prepared by Coaxial Arc Plasma Deposition, 2014 MRS Fall Meeting, 2014.12. |
| 160. | Abdelrahman Zkria, Hiroki Gima, Mahmoud Shaban, Tsuyoshi Yoshitake, Fabrication of heterojunction diodes comprising nitrogen-doped ultrananocrystalline diamond/amorphous carbon and p-type silicon, 2014 MRS Fall Meeting, 2014.12. |
| 161. | Hiroki Gima, Tsuyoshi Yoshitake, Heterojunction Diodes Comprising Nitrogen-doped Ultrananocrystalline Dia-mond Films Prepared by Coaxial Arc Plasma Deposition and p-Type Silicon Substrates, International Forum for Green Asia 2014, Nov. 28-29, 2014, Kyushu University, Fukuoka, Japan., 2014.11. |
| 162. | Hiroki Gima, Tsuyoshi Yoshitake, Heterojunction Diodes Comprising Nitrogen-doped Ultrananocrystalline Dia-mond Films Prepared by Coaxial Arc Plasma Deposition and p-Type Silicon Substrates, International Forum for Green Asia 2014, Nov. 28-29, 2014, Kyushu University, Fukuoka, Japan., 2014.11. |
| 163. | Takanori Hanada, Tsuyoshi Yoshitake, Photoconduction of B-doped ultrananocrystalline diamond/hydrogenated amorphous carbon composite films in metal semiconductor metal geometry , International Forum for Green Asia 2014, Nov. 28-29, 2014, Kyushu University, Fukuoka, Japan., 2014.11. |
| 164. | Takanori Hanada, Tsuyoshi Yoshitake, Photoconduction of B-doped ultrananocrystalline diamond/hydrogenated amorphous carbon composite films in metal semiconductor metal geometry , International Forum for Green Asia 2014, Nov. 28-29, 2014, Kyushu University, Fukuoka, Japan., 2014.11. |
| 165. | Hiroshi Naragino, Aki Tominaga, Satoru Hattori, Tsuyoshi Yoshitake, Fabrication of Ultrananocrystalline Diamond Powder by Using A Coaxial Arc Plasma Gun, International Forum for Green Asia 2014, Nov. 28-29, 2014, Kyushu University, Fukuoka, Japan., 2014.11. |
| 166. | Yuki Katamune, Al-Riyami Sausan, Shinya Ohmagari, Seishi Takagi, Tsuyoshi Yoshitake, Structural Characterization of Boron-Doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Film, The 7th International Symposium on Surface Science (ISSS-7), 2014.11. |
| 167. | Aki Tominaga, Hiroshi Naragino, Kenji Hanada, Hiroyuki Deguchi, Kaoru Takeda, Tsuyoshi Yoshitake, Magnetization of ultrananocrystalline diamond powder by Cr-doping, The 7th International Symposium on Surface Science (ISSS-7), 2014.11. |
| 168. | Ken-ichiro Sakai, Yuki Asai, Yuta Noda, Kazuya Ishibashi, Kaoru Takeda, Tsuyoshi Yoshitake, CPP Junctions Fabricated From Fe3Si/FeSi2 Artificial Lattices by FIB, 27th International Microprocesses and Nanotechnology Conference (MNC2014), 2014.11. |
| 169. | Tomohiro Yoshida, Yutaro Ueda, Aki Tominaga, Toshihiro Okajima, Tsuyoshi Yoshitake, Film Structures of β-AlN Thin Films Grown on Sapphire (0001) by Pulsed Laser Deposition, 27th International Microprocesses and Nanotechnology Conference (MNC2014), 2014.11. |
| 170. | Hiroshi Naragino, Aki Tominaga, Satoru Hattori, Tsuyoshi Yoshitake, Formation of Nanodiamond Powder Prepared Using A Coaxial Arc Plasma Gun, The 7th International Symposium on Surface Science (ISSS-7), 2014.11. |
| 171. | Tomohiro Yoshida, Kenji Hanada, Hiroyuki Setoyama, Kazushi Sumitani, Tsuyoshi Yoshitake, Repetition Rate Effects on Mechanical Properties of Ultrananocrystalline Diamond/hydrogenated Amorphous Carbon Fabricated by Arc Plasma Deposition, The 7th International Symposium on Surface Science (ISSS-7), 2014.11. |
| 172. | Motoki Takahara, T.M. Mostafa, Ryuji Baba, Suguru Funasaki, Mahmoud Shaban, Nathaporn Promros, Tsuyoshi Yoshitake, Effects of carbon-doping of n-type β-FeSi2/p-type Si heterojunction diodes, The 7th International Symposium on Surface Science (ISSS-7), 2014.11. |
| 173. | Yuki Asai, Ken-ichiro Sakai, Kazuya Ishibashi, Noda Yuta, Kaoru Takeda, Tsuyoshi Yoshitake, Magnetoresistance Effects in Current-Perpendicular-to-Plane Structures Based on Fe3Si/FeSi2 artificial lattices, The 7th International Symposium on Surface Science (ISSS-7), 2014.11. |
| 174. | Tomohiro Yoshida, Yutaro Ueda, Aki Tominaga, Toshihiro Okajima, Tsuyoshi Yoshitake, Film growth of Single layer β-AlN Grown on Sapphire by Pulsed Laser Deposition, The 7th International Symposium on Surface Science (ISSS-7), 2014.11. |
| 175. | Tsuyoshi Yoshitake, Yuki Katamune, Takanori Hanada, Hiroki Gima, Abdelrahman M. Ahmed, Shinya Ohmagari, Sausan Al-Riyami, Kenji Hanada, Growth of UNCD/a-C:H composite films by PVD and their electrical conductivity control, Japan-France Workshop on Diamond Power Devices, 2014.10. |
| 176. | アブデルラーマン ゼクリア, 儀間弘樹, サウサン アリヤミ, マハムド シャバーン, 吉武 剛, Heterojunction diodes comprising nitrogen-doped ultrananocrystalline diamond/amorphous carbon and p-type silicon, 2014年第75回応用物理学会秋季学術講演会, 2014.09. |
| 177. | Shinya Ohmagari, Sausan Al-Riyami, Yuki Katamune, Takanori Hanada, Tsuyoshi Yoshitake, Formation of Ultrananocrystalline Diamond/Amorphous Carbon Composite Films and Their Application to Photodetectors , The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 178. | Kazushi Sumitani, Satoru Hattori, Hiroshi Naragino, Aki Tominaga, Tsuyoshi Yoshitake, Evaluation of the density of ultrananocrystalline diamond/amorphous carbon composite films prepared by pulsed laser deposition using synchrotron X-ray Reflectivity measurements, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 179. | Tomohiro Yoshida, Yutaro Ueda, Aki Tominaga, Toshihiro Okajima, Tsuyoshi Yoshitake, Structural Evaluation of beta-AlN Films Grown on Sapphire (0001) , The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 180. | Aki Tominaga, Hiroshi Naragino, Kenji Hanada, Takeharu Sugiyama, Tsuyoshi Yoshitake, Nanodiamond Powder Prepared Using A Coaxial Arc Plasma Gun, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 181. | Ken-ichiro Sakai, Yuki Asai, Yuta Noda, Kaoru Takeda, Tsuyoshi Yoshitake, Current -induced magnetization switching induced at low current densities in current -perpendicular-to -plane structural Fe3Si/FeSi2 artificial lattices, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 182. | Ken-ichiro Sakai, Hiroyuki Deguchi, Yuki Asai, Yuta Noda, Kaoru Takeda, Tsuyoshi Yoshitake, Temperature-dependent interlayer coupling in Fe3Si/FeSi2 artificial lattices, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 183. | Ken-ichiro Sakai, Hiroyuki Deguchi, Yuki Asai, Yuta Noda, Kaoru Takeda, Tsuyoshi Yoshitake, Temperature-dependent interlayer coupling in Fe3Si/FeSi2 artificial lattices, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 184. | Takanori Hanada, Shinya Ohmagari, Tsuyoshi Yoshitake, Photodetection in Metal-Semiconductor-Metal Structures Comprising Semiconducting Boron-doped UNCD/a-C:H, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 185. | Yuki Katamune, Shinya Ohmagari, Tsuyoshi Yoshitake, Effects of Hydrogenation on Electrical Properties and Chemical Bonding Structure of Boron-doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 186. | Hiroshi Naragino, Aki Tominaga, Kenji Hanada, Kazutaka Kamitani, Takeharu Sugiyama, Kaoru Takeda, Hiroyuki Deguchi, Tsuyoshi Yoshitake, Effects of Hydrogenation on Electrical Properties and Chemical Bonding Structure of Boron-doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 187. | Abdelrahman Zkria, Mahmoud Shaban, Hiroki Gima, Al-Riyami Sausan, Tsuyoshi Yoshitake, Ultraviolet Photodetection of Nitrogen-Doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films at Low Temperatures, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 188. | Hiroki Gima, Al-Riyami Sausan, Mahmoud Shaban, Tsuyoshi Yoshitake, Electrical Properties of Nitrogen-doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Fabricated by Coxial Arc Plasma Depostion, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 189. | Tarek M. Mostafa, Suguru Funasaki, Motoki Takahara, Mahmoud Shaban, Tsuyoshi Yoshitake, Effect of Growth Temperature on Electrical Properties of Carbon-doped β-FeSi2/Si Heterojunctions, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 190. | Mahmoud Shaban, Suguru Funasaki, Tarek M. Mostafa, Motoki Takahara, Tsuyoshi Yoshitake, Low Temperature Characteristics of Carbon-doped β-FeSi2/Si Heterojunctions Prepared by RF Magnetron Sputtering, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 191. | Nathaporn Promros, Suguru Funasaki, Motoki Takahara, Ryuhei Iwasaki, Mahmoud Shaban, Tsuyoshi Yoshitake, Investigation of Current Transport Mechanism in n-Type β-FeSi2/p-Type Si Heterojunctions Prepared by Facing-Targets Direct-Current Sputtering, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 192. | Nathaporn Promros, Suguru Funasaki, Motoki Takahara, Ryuhei Iwasaki, Mahmoud Shaban, Tsuyoshi Yoshitake, Investigation of Current Transport Mechanism in n-Type β-FeSi2/p-Type Si Heterojunctions Prepared by Facing-Targets Direct-Current Sputtering, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 193. | Nathaporn Promros, Suguru Funasaki, Motoki Takahara, Ryuhei Iwasaki, Mahmoud Shaban, Tsuyoshi Yoshitake, Current Transport Mechanism in Mesa Structural Nanocrystalline-FeSi2/Si /Si Heterojunctions Prepared by Liftoff Photolithography, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 194. | Nathaporn Promros, Suguru Funasaki, Motoki Takahara, Ryuhei Iwasaki, Mahmoud Shaban, Tsuyoshi Yoshitake, Electrical Characteristics of Carbon-Doped Nanocrystalline-FeSi2/Si Heterojunction Photodiodes, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 195. | Nathaporn Promros, Suguru Funasaki, Motoki Takahara, Ryuhei Iwasaki, Mahmoud Shaban, Tsuyoshi Yoshitake, Electrical Characteristics of Carbon-Doped Nanocrystalline-FeSi2/Si Heterojunction Photodiodes, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 196. | Tarek M. Mostafa, Mahmoud Shaban, Motoki Takahara, Suguru Funasaki, Aki Tominaga, Toshihiro Okajima, Tsuyoshi Yoshitake, Extended X-ray Absorption Find-Structure Investigation of Carbon-Doped β-FeSi2, 九州シンクロトロン光研究センター合同シンポジウム, 2014.08. |
| 197. | Yuki Asai, Ken-ichiro Sakai, Kazuya Ishibashi, Yuta Noda, Kaoru Takeda, Tsuyoshi Yoshitake, Formation of spin valve junctions based on Fe3Si/FeSi2/Fe3Si artificial films, International conference and summer school on advanced silicide technology 2014, 2014.07. |
| 198. | Ken-ichiro Sakai, Yuki Asai, Yuta Noda, Hiroyuki Deguchi, Kaoru Takeda, Tsuyoshi Yoshitake, Temperature-dependent interlayer coupling in Fe3Si/FeSi2 artificial lattices, International conference and summer school on advanced silicide technology 2014, 2014.07. |
| 199. | Yuki Asai, Ken-ichiro Sakai, Yuta Noda, Kaoru Takeda, Tsuyoshi Yoshitake, Current-induced-magnetization switching at low current densities in current-perpendicular-to-plane structural Fe3Si/FeSi2 artificial lattices, International conference and summer school on advanced silicide technology 2014, 2014.07. |
| 200. | Ken-ichiro Sakai, Yuki Asai, Yuta Noda, Kaoru Takeda, Tsuyoshi Yoshitake, Magnetoresistance effects in current-perpendicular-to-plane structures based on Fe3Si/FeSi2 artificial lattices, International conference and summer school on advanced silicide technology 2014, 2014.07. |
| 201. | Motoki Takahara, Suguru Funasaki, Trarek M. Mostafa, Mahmoud Shaban, Nathaporn Promros, Tsuyoshi Yoshitake, Electric properties of carbon-doped n-type β-FeSi2/p-type Si heterojunction diodes, International conference and summer school on advanced silicide technology 2014, 2014.07. |
| 202. | Trarek M. Mostafa, Mahmoud Shaban, Motoki Takahara, Suguru Funasaki, Aki Tominaga, Toshihiro Okajima, Tsuyoshi Yoshitake, Extended X-ray absorption fine-structure study of carbon-doped β-FeSi2, International conference and summer school on advanced silicide technology 2014, 2014.07. |
| 203. | Trarek M. Mostafa, Mahmoud Shaban, Motoki Takahara, Suguru Funasaki, Aki Tominaga, Toshihiro Okajima, Tsuyoshi Yoshitake, Extended X-ray absorption fine-structure study of carbon-doped β-FeSi2, International conference and summer school on advanced silicide technology 2014, 2014.07. |
| 204. | Tsuyoshi Yoshitake, Present state of research on photodiodes comprising iron disilicides and problems awaiting solution, International conference and summer school on advanced silicide technology 2014, 2014.07, Semiconducting iron disilicide is a new candidate applicable to near-infrared-wavelength photoelec-tronic devices [1-3], because it possesses features such as a direct optical band gap of 0.85 eV above an indirect gap (0.76 eV) and a large absorption coefficient, which is 10^5 cm1 at 1.0 eV[4]. Since beta-FeSi2 can be epitaxially grown on Si due to small lattice mismatches, a heterojunction diode comprising a beta-FeSi2 thin film and singlecrystalline Si substrate is a device that can be briefly formed by employing vapor deposition. For near-infrared light detection in the Si/beta-FeSi2 heterojunction diodes, near-infrared light transmitted through the front-side Si substrate can be absorbed in the depletion region of the back-side beta-FeSi2 thin film. In our previous works, we have progresses researches on p-type Si/n-type beta-FeSi2 heterojunction diodes, totally from the epitaxially growth of beta-FeSi2 thin film on Si(111) by sputtering [5] to the evaluation of p-type Si/n-type beta-FeSi2 heterojunctions as photodetectors [6,7]. It was confirmed that beta-FeSi2 in the heterojunction evidently con-tributes to the photodetection of near-infrared light from the photoresponse spectrum of the heterojunction, as shown in Fig. 1. In addition, as shown in Fig.2, the heterojunction clearly exhibited current due to photogenerated carriers for 1.33 micrometer monochromatic light in the I-V curves in comparison with that in the dark. The detectivity at temperatures lower than 100 K reach approximately 2*10^11 cmHz^1/2 /W, which is comparable with that of existing near infrared photodiodes comprising PbS and InAs at the same temperature. However, the external quantum efficiency is less than 10 % [6,7]. In this presentation, the progress thus far of our research and recent problems that we are facing and should be solved for the next step will be introduced. A serious problem for p-type Si/n-type beta-FeSi2 heterojunctions is that a barrier due to a band offset appears in the valence band and it prevents from the flow of photogenerated carriers from the n-type beta-FeSi2 layer to the p-type Si layer. The opposite combination, namely n-type Si/p-type beta-FeSi2, is structurally ideal because of it has no barriers due to the band offset. In order to form p-type -FeSi2, the residual carrier density should be reduced for controlling the conduction type. Carbon doping, which might be effective for a reduction in the carrier density, will be introduced. [1] D. Leong, M. Harry, K. J. Reeson, and K. P. Homewood, Nature (London) 387 (1997) 686. [2] Y. Maeda, T. Akita, K. Umezawa, K. Miyake, M. Sagawa, SPIE Proc. 3419 (1998) 341916. [3] T. Ootsuka, Y. Fudamoto, M. Osamura, T. Suemasu, Y. Makita, Y. Fukuzawa, and Y. Nakayama, Appl. Phys. Lett. 91 (2007) 142114. [4] H. Udono, I. Kikuma, T. Okuno, Y. Matsumoto, and H. Tajima: Appl. Phys. Lett. 85 (2004) 1937. [5] .M. Shaban, S. Izumi, K. Nomoto, and T. Yoshitake, Appl. Phys. Lett. 95 (2009) 162102. [6] N. Promros, K. Yamashita, S. Izumi, R. Iwasaki, M. Shaban, and T. Yoshitake, Jpn. J. Appl. Phys. 51 (2012) 09MF02. [7] S. Izumi, M. Shaban, N. Promros, K. Nomoto, and T. Yoshitake, Appl. Phys. Lett. 102 (2013) 032107.. |
| 205. | Tarek Mostafa, Motoki Takahara, Mahmoud Shaban, Tsuyoshi Yoshitake, Electric properties of Carbon doped β-FeSi2 /Si heterojunction photodiodes, The 61th JSAP Spring Meeting, 2014.03. |
| 206. | Suguru Funasaki, Ryuhei Iwasaki, Nathaporn Promros, Mahmoud Shaban, Tsuyoshi Yoshitake, Electrical Properties of Mesa Structural n-type Nanocrystalline-FeSi2/p-type Si Heterojunction Photodiodes, The 15th Cross Straits Symposium on Materials, Energy and Environment Science and Technology, 2013.11. |
| 207. | Hiroki Gima, Tsuyoshi Yoshitake, Fabrication of n-type ultrananocrystalline diamond/hydrogenated amorphous carbon composite films prepared by coaxial arc plasma deposition (II), The 15th Cross Straits Symposium on Materials, Energy and Environment Science and Technology, 2013.11. |
| 208. | Yuki Katamune, Tsuyoshi Yoshitake, Boron Doping Effects on Electrical Properties of Ultrananocrystalline Diamond Films Prepared by Coaxial Arc Plasma Deposition, The 15th Cross Straits Symposium on Materials, Energy and Environment Science and Technology, 2013.11. |
| 209. | Takanori Hanada, Shinya Ohmagari, Tsuyoshi Yoshitake, Metal-Semiconductor-Metal Photodetection of Boron-doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films, The 15th Cross Straits Symposium on Materials, Energy and Environment Science and Technology, 2013.11. |
| 210. | Yuki Katamune, Tsuyoshi Yoshitake, Photovoltaic Characteristics of Heterojunction Diode Comprising Boron-Doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Film and n-Type Silicon, 2013 International Conference on SOLID STATE DEVICES AND MATERIALS, 2013.09. |
| 211. | Hiroki Gima, Sausan Al-Riyami, Tsuyoshi Yoshitake, UV detection of n-type Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films by Coaxial Arc Plasma Deposition, 2013 International Conference on SOLID STATE DEVICES AND MATERIALS, 2013.09. |
| 212. | Takanori Hanada, Shinya Ohmagari, Tsuyoshi Yoshitake, Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films for Metal-Semiconductor-Metal Photodetector, 2013 International Conference on SOLID STATE DEVICES AND MATERIALS, 2013.09. |
| 213. | Hiroki Gima, Sausan Al-Riyami, Tsuyoshi Yoshitake, UV Detection of Nitrogen-doped Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films, 2013 JSAP-MRS Joint Symposia, 2013.09. |
| 214. | Yuki Katamune, Tsuyoshi Yoshitake, Boron Doping Effects on Electrical Properties of Ultrananocrystalline Diamond Films Prepared by Coaxial Arc Plasma Deposition, 2013 JSAP-MRS Joint Symposia, 2013.09. |
| 215. | Takanori Hanada, Shinya Ohmagari, Tsuyoshi Yoshitake, Photoconduction of ultrananocrystalline diamond/hydrogenated amorphous carbon composite films in metal-semiconductor-metal geometry, 2013 JSAP-MRS Joint Symposia, 2013.09. |
| 216. | Suguru Funasaki, Ryuhei Iwasaki, Nathaporn Promros, Tsuyoshi Yoshitake, Characteristics of Mesa Structural Near-Infrared n-Type Nanocrystalline FeSi2/p-Type Si Heterojunction Photodiodes, Asia-Pacific Conference on Green Technology with Silicides and Related Materials (APAC-SILICIDE 2013), 2013.07. |
| 217. | Ken-ichiro Sakai, Yuta Noda, Daiki Tsumagari, Kaoru Takeda, Tsuyoshi Yoshitake, Current-induced Magnetization Switching in Fe3Si/FeSi2/Fe3Si Trilayer films, Asia-Pacific Conference on Green Technology with Silicides and Related Materials (APAC-SILICIDE 2013), 2013.07. |
| 218. | Sausan Al-Riyami, Hiroyuki Setoyama, Kazushi Sumitani, yasuharu Hirai, Aki Tominaga, Tsuyoshi Yoshitake, Growth of Nonhydrogenated Ultrananocrystalline Diamond/Amorphous Carbon Films in Nitrogen Atmospheres by Pulsed Laser Ablation of Graphite Targets, E-MRS 2013 SPRING MEETING, Symposium V: Laser materials interactions for micro and nano applications, 2013.05. |
| 219. | Hikaru Ichinose, Sausan Al-Riyami, Tsuyoshi Yoshitake, Hardness Enhancement of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films by Silicon Doping , E-MRS 2013 SPRING MEETING, Symposium S: Protective coatings and thin films’13, 2013.05. |
| 220. | Ken-ichiro Sakai, Yuta Noda, Daiki Tsumagari, Takayuki Sonoda, Shin-ichi Hirakawa, Kaoru Takeda, Tsuyoshi Yoshitake, Magnetoresistance Effects in Current-Perpendicular-to-Plane Structures based on Fe3Si/FeSi2 artificial lattices , E-MRS 2013 SPRING MEETING, Symposium N: Atomic-scale engineering of multifunctional nano-sized materials and films, 2013.05. |
| 221. | Ken-ichiro Sakai, Yuta Noda, Daiki Tsumagari, Hiroyuki Deguchi, Kaoru Takeda, Tsuyoshi Yoshitake, Temperature-dependent interlayer coupling in Fe3Si/FeSi2 artificial lattices, E-MRS 2013 SPRING MEETING, Symposium N: Atomic-scale engineering of multifunctional nano-sized materials and films, 2013.05. |
| 222. | Takanori Hanada, Shinya Ohmagari, Tsuyoshi Yoshitake, Photoconduction studies of p-type ultrananocrystalline diamond/hydrogenated amorphous carbon composite films prepared by pulsed laser deposition, E-MRS 2013 SPRING MEETING, Symposium D: Advanced inorganic materials and structures for photovoltaics, 2013.05. |
| 223. | Suguru Funasaki, Ryuhei Iwasaki, Nathaporn Promros, Tsuyoshi Yoshitake, Characterization of Mesa Structural Near-Infrared n-Type Nanocrystalline Iron Disilicides/p-Type Si Heterojunction Photodiodes , E-MRS 2013 SPRING MEETING, Symposium J: Semiconductor nanostructures towards electronic and optoelectronic device applications - IV, 2013.05. |
| 224. | Yuki Katamune, Shinya Ohmagari, Sausan Al-Riyami, Seishi Takagi, Tsuyoshi Yoshitake, Chemical bonding structures and electrical properties of boron-doped ultrananocrystalline diamond/hydrogenated amorphous carbon composite films prepared by coaxial arc plasma deposition , E-MRS 2013 SPRING MEETING, Symposium N: Atomic-scale engineering of multifunctional nano-sized materials and films, 2013.05. |
| 225. | Yuki Katamune, Shinya Ohmagari, Tsuyoshi Yoshitake, Electrical properties of heterojunction diodes comprising p-type ultrananocrystalline diamond/hydrogenated amorphous carbon composite films and n-type Silicon substrates , E-MRS 2013 SPRING MEETING, Symposium N: Atomic-scale engineering of multifunctional nano-sized materials and films, 2013.05. |
| 226. | Aki Tominaga, Hiroshi Naragino, Kenji Hanada, Tsuyoshi Yoshitake, Chromium-doped nanocrystalline diamond powder fabricated using coaxial arc plasma equipped with chromium-blended graphite targets , E-MRS 2013 SPRING MEETING, Symposium N: Atomic-scale engineering of multifunctional nano-sized materials and films, 2013.05. |
| 227. | Aki Tominaga, Hiroshi Naragino, Kenji Hanada, Tomohiro Yoshida, Tsuyoshi Yoshitake, Fabrication of Diamond Nanocrystallites in Powder Using Coaxial Arc Plasma Gun , E-MRS 2013 SPRING MEETING, Symposium N: Atomic-scale engineering of multifunctional nano-sized materials and films, 2013.05. |
| 228. | Tomohiro Yoshida, Yutaro Ueda, Kazushi Sumitani, Toshihiro Okajima, Aki Tominaga, Tsuyoshi Yoshitake, Cubic AlN Films Epitaxially Grown on Sapphire(0001) in Nitrogen Atmospheres by Pulsed Laser Deposition with Sintered AlN Targets , E-MRS 2013 SPRING MEETING, Symposium N: Atomic-scale engineering of multifunctional nano-sized materials and films, 2013.05. |
| 229. | Hiroki Gima, Sausan Al-Riyami, Tsuyoshi Yoshitake, n-Type Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Prepared By Coaxial Arc Plasma Deposition , E-MRS 2013 SPRING MEETING, Symposium N: Atomic-scale engineering of multifunctional nano-sized materials and films, 2013.05. |
| 230. | Shinya Ohmagari, Tsuyoshi Yoshitake, Electrical and optical properties of boron-doped p-type ultrananocrystalline diamond/hydrogenated amorphous carbon composite films prepared by pulsed laser deposition, Hasselt Diamond Workshop 2013 SBDD XVIII, 2013.02. |
| 231. | Shinya Ohmagari, Takanori Hanada, Sausan Al-Riyami, Tsuyoshi Yoshitake, Ultrananocrystalline diamond/hydrogenated amorphous carbon composite films for photovoltaic applications, Hasselt Diamond Workshop 2013 SBDD XVIII, 2013.02. |
| 232. | Shinya Ohmagari, Sausan Al-Riyami, Tsuyoshi Yoshitake, Photoconduction in ultrananocrystalline diamond/hydrogenated amorphous carbon composite films evaluated in metal-semiconductor-metal geometry, Hasselt Diamond Workshop 2013 SBDD XVIII, 2013.02. |
| 233. | Nathaporn Promros, Ryuhei Iwasaki, Suguru Iwasaki, Kyohei Yamashita, Tsuyoshi Yoshitake, Preparation of Mesa Structural Near-Infrared n-Type Nanocrystalline-FeSi2/p-Type Si Heterojunction Photodiodes, The 15th International Conference of International Academy of Physical Sciences, 2012.12. |
| 234. | Yutaro Ueda, Tomohiro Yoshida, Eiichi Kobayashi, Kazushi Sumitani, Toshihiro Okajima, Aki Tominaga, Tsuyoshi Yoshitake, Structure evolution of Cubic AlN Films Epitaxially grown on Sapphire(0001) by pulsed laser deposition, International Workshop on Nitride Semiconductors 2012, 2012.10. |
| 235. | Sausan Al-Riyami, Tsuyoshi Yoshitake, Nitrogen Incorporated Ultrananocrystalline Diamond/Nonhydrogenated Amorphous Carbon Composite Films Prepared by Pulsed Laser Deposition, Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME2012), 2012.10. |
| 236. | Sausan Al-Riyami, Hiroyuki Setoyama, Kazushi Sumitani, Yusuharu Hirai, Tsuyoshi Yoshitake, n-Type Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films Prepared by Pulsed Laser Deposition, Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME2012), 2012.10. |
| 237. | Ryuhei Iwasaki, Kyohei Yamashita, Nathaporn Promros, Shota Izumi, Tsuyoshi Yoshitake, Near-Infrared Light Detection of n-Type β-FeSi2/i-Si/p- Type Si Heterojunction Photodiodes at Low Temperatures, Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME2012), 2012.10. |
| 238. | Ryuhei Iwasaki, Kyohei Yamashita, Nathaporn Promros, Shota Izumi, Tsuyoshi Yoshitake, Influences of Hydrogen Passivation on Near-Infrared Light Detection of n-Type β-FeSi2/p-Type Si Heterojunction Photodiodes, Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME2012), 2012.10. |
| 239. | Yuta Noda, Takayuki Sonoda, Ken-ichiro Sakai, Kaoru Takeda, Tsuyoshi Yoshitake, Current-Induced Magnetization Switching in CPP Junctions based on Fe3Si/FeSi2 Multilayered Films, Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME2012), 2012.10. |
| 240. | Kenji HANADA, Aki Tominaga, Takeharu Sugiyama, Kazushi Sumitani, Hiroyuki Setoyama, Tsuyoshi Yoshitake, Enhancement of Diamond Crystallite Size of Ultrananocrystalline Diamond/Amorphous Carbon Composite Films by Controlling Arc Discharge Energy of Coaxial Arc Plasma Gun, Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME2012), 2012.10. |
| 241. | 片宗優貴, 大曲新矢, Kazushi Sumitani, Hiroyuki Setoyama, Yasuharu Hirai, Tsuyoshi Yoshitake, p-Type Semiconducting Properties of Boron Doped Ultrananocrystalline Diamond/Amorphous Carbon Composite Films Prepared by Coaxial Arc Plasma Deposition, Pacific Rim Meeting on Electrochemical and Solid State Science (PRiME2012), 2012.10. |
| 242. | Sausan Al-Riyami, Tsuyoshi Yoshitake, Nitrogen-Doped Ultrananocrystalline Diamond/Hydrogen-Free Amorphous Carbon Composite Films Prepared by Pulsed Laser Deposition, IUMRS-International Conference on Electronic Materials (IUMRS-ICEM 2012), 2012.09. |
| 243. | Shinya Ohmagari, Tsuyoshi Yoshitake, Photodetection properties of ultrananocrystalline diamond/hydrogenated amorphous carbon composite films, IUMRS-International Conference on Electronic Materials (IUMRS-ICEM 2012), 2012.09. |
| 244. | Sausan Al-Riyami, Tsuyoshi Yoshitake, Hetrojunction Diodes Comprised of p-Type Si/n-Type UNCD:a-C:H Composite Film Prepared by Pulsed Laser Deposition, IUMRS-International Conference on Electronic Materials (IUMRS-ICEM 2012), 2012.09. |
| 245. | Tsuyoshi Yoshitake, Ecologically Friendly Semiconductors: Iron Disilicides and Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon, IUMRS-International Conference on Electronic Materials (IUMRS-ICEM 2012), 2012.09. |
| 246. | Tsuyoshi Yoshitake, Applications of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films to Photodetectors , 1st NUS-IMCE Workshop in Kyushu, 2012.06. |
| 247. | , [URL]. |
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