Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
CHIHAYA ADACHI Last modified date:2019.06.24

Professor / Department of Applied Chemistry / Faculty of Engineering


Papers
1. Shuzo Hirata, Hyo Jung Heo, Yuki Shibano, Oamu Hirata, Masayuki Yahiro, and Chihaya Adachi, Improved Device Lifetime of Organic Light Emitting Diodes with an Electrochemically Stable-Conjugated Liquid Host in the Liquid Emitting Layer, Jpn. J. Appl.Phys., in press.
2. Hajime Nakanotani, CHIHAYA ADACHI, Amplified spontaneous emission and electroluminescence from thiophene/phenylene co-oligomer-doped p-bis(p-styrylstyryl)benzene crystals, Adv. Opt. Mater..
3. Shuzo Hirata, Kentaro Totani, Hironori Kaji, Martin Vacha, Toshiyuki Watanabe, CHIHAYA ADACHI, Reversible thermal recording media using time-dependent persistent room temperature phosphorescence, Adv. Opt. Mater..
4. Keigo Sato, Katsuyuki Shizu, Kazuaki Yoshimura, Atsushi Wada, Hiroshi Miyazaki, CHIHAYA ADACHI, Organic luminescent molecule with energetically equivalent singlet and triplet excited states for organic light-emitting diodes, Phys. Rev. Lett.
5. N. Suganuma, C.Adachi, T. Koyama, Y. Taniguchi and H. Shiraishi, A 200nm x 2mm array of organic light-emitting diodes and their anisotropic electroluminescence, Appl. Phys. Lett., 74, 1206-1208, 1999.03.
6. G. Sakamoto, C. Adachi, T. Koyama, Y. Taniguchi, C. D. Merritt, H. Murata and Z. H. Kafafi, Significant improvement of device durability in organic light-emitting diodes by doping both hole transport and emitter layers with rubrene molecules, Appl. Phys. Lett., 75, 766-768, 1999.08.
7. M. Uchida, C. Adachi, T. Koyama and Y. Taniguchi, Charge carrier trapping effect by luminescent dopant molecules in single-layer organic light emitting diodes, J. Appl. Phys., 86, 1680-1687, 1999.08.
8. A. Yamamori, C. Adachi, T. Koyama and Y. Taniguchi, Electroluminescence of organic light emitting diodes with a thick hole transport layer composed of a triphenylamine based polymer doped with an antimonium compound, J. Appl. Phys., 86, 4369-4376, 1999.10.
9. Y. Okumura, M. Nagawa, C. Adachi, M. Satsuki, S. Suga, T. Koyama and Y. Taniguchi, Low Threshold Gain-Narrowing Characteristics of Fluorescent Styrylbenzene Derivatives as a Guest Molecule in an Organic Thin-Film Optical Waveguide, Chem. Lett., 754-755, 2000.03.
10. G. Parthasarathy, C. Adachi, P. E. Burrows and S. R. Forrest, High-efficiency transparent organic light-emitting devices, Appl. Phys. Lett., 76, 2128, 2000.04.
11. C. Adachi, M. A. Baldo and S. R. Forrest, Electroluminescence mechanisms in organic light emitting devices employing a europium chelate doped in a wide energy gap bipolar conducting host, J. Appl. Phys., 87、8049-8055, 2000.06.
12. C. Adachi, M. A. Baldo, S. R. Forrest and M. E. Thompson, High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials, Appl. Phys. Lett, 77, 904-906, 2000.08.
13. H. Mochizuki, T. Hasui, M, T. Shiono, T. Ikeda, C. Adachi, Y. Taniguchi, and Y. Shirota, Emission behavior of molecularly doped electroluminescent device using liquid-crystalline matrix, Appl. Phys. Lett., 77, 1587, 2000.09.
14. H. Mochizuki, T. Hasui, M. Kawamoto, M, T. Shiono, T. Ikeda, C. Adachi, Y. Taniguchi, and Y. Shirota, Novel liquid-crystalline and amorphous materials containing oxadiazole and amine moieties for electroluminescent devices, Chem. Commun., (19) 1923, 2000.09.
15. M. A. Baldo, C. Adachi and S. R. Forrest, Transient analysis of organic electrophosphorescence.
Ⅱ. Transient analysis of triplet-triplet annihilation, Phys. Rev. B, 62, 10967, 2000.10.
16. H. Mochizuki, T. Hasui, O. Tsutsumi, A. Kanazawa, T. Shiono, T. Ikeda, C. Adachi, Y, Taniguchi and Y. Shirota, Electroluminescent Behavior of Oxadiazole Derivatives in Liquid-Crystalline Media, Mol. Cryst. and Liq. Cryst., 365, 129-138, 2001.01.
17. R. Naito, M. Ichikawa, T. Suzuki, C. Adachi, T. Koyama and Y. Taniguchi, Energy Relay Systems for Efficient Organic Light-Emitting Devices: Influence of Formation of Exciplex as Revealed by Photoexcitation, Mol. Cryst. and Liq. Cryst., 370, 31-34, 2001.01.
18. C. Adachi, R. Kwong and S. R. Forrest, Efficient electrophosphorescence using a doped ambipolar conductive molecular organic thin film, Organic Electronics, 2, 37-43, 2001.02.
19. S. Lamansky, P. Djurovich, D. Murphy, F. Abdel-Razzaq, Hae-Eun Lee, C. Adachi, P. E. Burrows, S. R. Forrest and M. E. Thompson, Highly Phosphorescent Bis-Cyclometalated Iridium Complexes: Synthesis, Photophysical Characterization, and Use in Organic Light Emitting Diodes, J. Am. Chem. Soc., 123, 4304-4312, 2001.04.
20. B. W. D’Andrade, M. A. Baldo, C. Adachi, J. Brooks, M. E. Thompson and S. R. Forrest, High-efficiency yellow double-doped organic light-emitting devices based on phosphor-sensitized fluorescence, Appl. Phys. Lett., 79, 1045-1047, 2001.08.
21. C. Adachi, Raymond C. Kwong, P. Djurovich, V. Adamovich, M. A. Baldo, M. E. Thompson and S. R. Forrest, Endothermic energy transfer: A mechanism for generating very efficient high-energy phosphorescent emission in organic materials, Appl. Phys. Lett., 79, 2082, 2001.09.
22. C. Adachi, M. A. Baldo, M. E. Thompson and S. R. Forrest, Nearly 100% internal phosphorescence efficiency in an organic light emitting device, J. Appl. Phys., 90, 5048-5051, 2001.11.
23. C. Adachi, M. E. Thompson and S. R. Forrest, Architectures for Efficient Electrophosphorescent Organic Light-Emitting Devices, IEEE, J Selected Topics Quan. Elec., 8, 372, 2002.03.
24. D. Kolosov, V. Adamovich, P. Djurovich, M. E. Thompson and C. Adachi, 1,8-Naphthalimides in Phosphorescent Organic LEDs : The Interplay between Dopant, Exciplex, and Host Emission, J. Am. Chem. Soc., 124, 9945-9954, 2002.07.
25. V. Adamovich, J. Brooks, A. Tamayo, A. M. Alexander, P. I. Djurovich, B. W. D’Andrade, C. Adachi, S. R. Forrest and M. E. Thompson, High efficiency single dopant white electrophosphorescent light emitting diodes, New J. Chem., 26, 1171-1178, 2002.08.
26. H. Yamamoto, T. Oyamada, H. Sasabe, and C. Adachi, Amplified spontaneous emission under optical pumping from an organic semiconductor laser structure equipped with transparent carrier injection electrodes, Appl. Phys. Lett., 84, 1401-1403, 2003.02.
27. H. Mochizuki, T. Hasui, M. Kawamoto, T. Ikeda, C. Adachi, Y. Taniguchi and Y. Shirota, A Novel Class of Photo- and Electroactive Polymers Containing Oxadiazole and Amine Moieties in a Side Chain, Macromolecules, 36, 3457-3464, 2003.04.
28. T. Oyamada, C. Maeda, H. Sasabe and C. Adachi, Efficient Electron Injection Characteristics of Tetra-2-pyridinylpyrazine (TPP) in Organic Light Emitting Diodes, Chem. Lett., 32, 388-389, 2003.04.
29. T. Oyamada, H. Tanaka, K. Matsushige, H. Sasabe and C. Adachi, Switching effect in Cu:TCNQ charge transfer-complex thin films by vacuum codeposition, Appl. Phys. Lett., 83, 1252-1254, 2003.08.
30. W. Yokoyama, H. Sasabe and C. Adachi, Carrier Injection and Transport of Steady-State High Current Density Exceeding 1000A/cm2 in Organic Thin Films, Jpn. J. Appl. Phys., (Express Letter), 42, L1353-1355, 2003.11.
31. T. Oyamada, C. Maeda, H. Sasabe and C. Adachi, Efficient Electron Injection Mechanism in Organic Light-Emitting Diodes Using an Ultra Thin Layer of Low-Work-Function Metals, Jpn. J. Appl. Phys., 42, L1535-1538, 2003.12.
32. X. F. Ren, B. D. Alleyne, P. I. Djurovich, C. Adachi, I. Tsyba, R. Bau and M. E. Thompson, Organometallic Complexes as Hole-Transporting Materials in Organic Light-Emitting Diodes, Inorg. Chem., 43, 1697-1707, 2004.02.
33. H. Inomata, K. Goushi, T. Masuko, T. Konno, T. Imai, H. Sasabe, J. J. Brown and C. Adachi, High-Efficiency Organic Electrophosphorescent Diodes Using 1, 3, 5-Triazine Electron Transport Materials, Chem. Mat., 16, 1285-1291, 2004.03.
34. Y. Kawamura, H. Yamamoto, K. Goushi, H. Sasabe and C. Adachi, Ultraviolet amplified spontaneous emission from thin films of 4,4’-bis(9-carbazolyl)-2,2’-biphenyl and the derivatives, Appl. Phys. Lett., 84, 2724-2726, 2004.04.
35. M. Ohkita, C. Adachi, M. Kawano, and T. Suzuki, Synthesis and characterization of hexakis(4-pyridylethynyl)benzene and hexakis(5-pyrimidylethynyl) benzene, Heterocycles, 63, 1537-1540, 2004.05.
36. T. Oyamada, H. Yoshizaki, H. Sasabe, and C. Adachi, Efficient Electron Injection Characteristics of Triazine Derivatives for Transparent OLEDs (TOLEDs), Chem. Lett., 33, 1034, 2004.05.
37. O. Karthaus, C. Adachi, S. Kurimura, and T. Oyamada, Electroluminescence from self-organized “microdomes”, Appl. Phys. Lett., 84, 4696, 2004.05.
38. K. Goushi, Y. Kawamura, H. Sasabe, and C. Adachi, Unusual Phosphorescence Characteristics of Ir(ppy)3 in a Solid Matrix at Low Temperatures, Jpn. J. Appl. Phys., (Express Letter), 43, L937-939, 2004.06.
39. Formation of MgAu Alloy Cathode by Photolithography and Its Application to Organic Light- Emitting Diodes and Organic Field Effect Transistors.
40. K. Goushi, R. Kwong, J. J. Brown, H. Sasabe and C. Adachi, Triplet exciton confinement and unconfinement by adjacent hole-transport layers, J. Appl. Phys., 95, 7798, 2004.06.
41. T. Oyamada, Y. Kawamura, T. Koyama, H. Sasabe and C. Adachi, Formation of Europium Chelate Complexes by Vacuum Co-Deposition and Their Application in Organic Light-Emitting Diodes, Adv. Mat., 16, 1082, 2004.07.
42. K. Hirata, T. Oyamada, T. Imai, H. Sasabe, C. Adachi, and T. Koyama, Electroluminescence as a probe for elucidating electrical conductivity in a deoxyribonucleic acid-cetyltrimethylammonium lipid complex layer, Appl. Phys. Lett., 85, 1627-1629, 2004.08.
43. Y. Kawamura, H. Sasabe, and C. Adachi, Simple Accurate System for Measuring Absolute Photoluminescence Quantum Efficiency in Organic Solid-State Thin Films, Jpn. J. Appl. Phys., 43, 7729-7730, 2004.11.
44. T. Oyamada, H. Sasabe, C. Adachi, S. Murase, T. Tominaga, and C. Maeda, Extremely low-voltage driving of organic light-emitting diodes with a Cs-doped phenyldipyrenylphosphine oxide layer as an electron-injection layer, Appl. Phys. Lett., 86, 033503, 2005.01.
45. M. Yoshida, T. Tsuchida, T. Kurata, M. Ikeda, H. Sasabe, and C. Adachi, High-Efficiency Carrier Injection Characteristics of Dixanthene Derivatives in Organic Light- Emitting Diodes, Jpn. J. Appl. Phys., 44, 410-411, 2005.01.
46. Takahito Oyamada, Hiroyuki Uchiuzo, Hiroyuki Sasabe and Chihaya Adachi, Blue-to-red electroluminescence from organic light-emitting field-effect transistor using various organic semiconductor materials, J. SID, 13, 869, 2005.02.
47. T. Oyamada, H. Sasabe, C. Adachi, S. Okuyama, N. Shimoji, and K. Matsushige, Electroluminescence of 2,4-bis(4-(2’-thiophene-yl)phenyl)thiophene in organic light-emitting field-effect transistors, Appl. Phys. Lett., 86, 093505-1-093505-3, 2005.02.
48. T. Aimono, Y. Kawamura, K. Goushi, H. Yamamoto, H. Sasabe, and C. Adachi, 100% fluorescence efficiency of 4,4’-bis[(N-carbazole)styryl]biphenyl in a solid film and the very low amplified spontaneous emission threshold, Appl. Phys. Lett., 86, 071110, 2005.02.
49. H. Yamamoto, H. Kasajima, W. Yokoyama, H. Sasabe, and C. Adachi, Extremely-high-density carrier injection and transport over 12000A/cm2 into organic thin films, Appl. Phys. Lett., 86, 083502-1-083502-3, 2005.02.
50. Y. Kawamura, K. Goushi, J. Brooks, J. J. Brown, H. Sasabe and C. Adachi, 100% phosphorescence quantum efficiency of Ir(III) complexes in organic semiconductor films, Appl. Phys. Lett., 86, 071104, 2005.02.
51. K. Goushi, H. Sasabe, and C. Adachi, Phosphorescence Decay Mechanism of Ir(ppy)3 in a Solid Matrix, J. Photopolymer Sci. & Tech., 18, 47-50, 2005.05.
52. H. Nakanotani, H. Sasabe, and C. Adachi, Singlet-singlet and singlet-heat annihilations in fluorescence-based organic light-emitting diodes under steady-state high current density, Appl. Phys. Lett., 86, 213506-1-213506-3, 2005.05.
53. H. Nakanotani, T. Oyamada, Y. Kawamura, H. Sasabe, and C. Adachi, Injection and Transport of High Current Density over 1000 A/cm2 in Organic Light Emitting Diodes under Pulse Excitation, Jpn. J. Appl. Phys., 44, 3659-3662, 2005.06.
54. Takahito Oyamada, Hiroyuki Uchiuzo, Seiji Akiyama, Yoshiaki Oku, Noriyuki Shimoji, Kazumi Matsushige, Hiroyuki Sasabe, and Chihaya Adachi, Lateral organic light-emitting diode with field-effect transistor characteristics, J. Appl. Phys., 98, 074506, 2005.10.
55. Toshinori Matsushima, Hiroyuki Sasabe, and Chihaya Adachi, Carrier injection and transport characteristics of copper phthalocyanine thin films under low to extremely high current densities, Appl. Phys. Lett., 88, 033508, 2006.01.
56. Yuichiro Kawamura, Jason Brooks, Julie J. Brown, H. Sasabe, and C. Adachi, Intermolecular Interaction and a Concentration-Quenching Mechanism of Phosphorescent Ir(III) Complexes in a Solid Film, Phys. Rev. Lett., 96, 017404, 2006.01.
57. O. Karthaus, C. Adachi, S. Arakaki, A. Endo and T. Wada, Preparation of Micropatterned Organic Light Emitting Diodes by Self-Organization, Molecular Crystals and Liquid Crystals, 444, 87-94, 2006.01.
58. Takahito Oyamada, Seiji Akiyama, Masayuki Yahiro, Mari Saigou, Motoo Shiro, Hiroyuki Sasabe, and Chihaya Adachi, Unusual photoluminescence characteristics of tetraphenylpyrene (TPPy) in various aggregated morphologies, Chem. Phys. Lett., 421, 295-299, 2006.02.
59. Hidetoshi Yamamoto, Takahito Oyamada, William Hale, Shoichi Aoshima, Hiroyuki Sasabe, and Chihaya Adachi, Low-Damage Indium Tin Oxide Formation on Organic Layers Using Unique Cylindrical Sputtering Module and Application in Transparent Organic Light-Emitting Diodes, Jpn. J. Appl. Phys., 45, L213-216, 2006.02.
60. Takahito Oyamada, Hiroyuki Sasabe, Yoshiaki Oku , Noriyuki Shimoji, and Chihaya Adachi, Estimation of carrier recombination and electroluminescence emission regions in organic light-emitting field-effect transistors using local doping method, Appl. Phys. Lett., 88, 093514, 2006.03.
61. Kenichi Goushi, Jason Brooks, Julie. J. Brown, Hiroyuki Sasabe, and Chihaya Adachi, Spin-relaxation Process of Excited Triplet States of Ir(ppy)3, J. Photopolymer Sci. & Tech., 19, 181-186, 2006.05.
62. John A. Mikroyannidis, Helen A. Moshopoulou, John A. Anastasopoulos, Minas M. Stylianakis, Larysa Fenenko, and Chihaya Adachi, Novel Blue-Greenish Electroluminescent Poly(Fluorenevinylene-alt-Dibenzothiophenevinylene)s and their Model Compounds, J. Poly. Sci., A: Poly. Chem., 44, 6790-6800, 2006.07.
63. J. A. Mikroyannidis, L. Fenenko, and C. Adachi, Synthesis and Photophysical Characteristics of 2,7-Fluorenevinylene-based Trimers and their Electroluminescence, J. Phys. Chem. B, 110, 20317-26, 2006.09.
64. K. S. Son, T. Mishina, S. Yamamoto, J. Nakahara, C. Adachi, and Y.Kawamura, Topological change of 4, 4’-bis[9-dicarbazolyl]-2,2’-biphenyl (CBP) by intermolecular rearrangement, Proceeding of the international symposium on TOP, World Scientific Publishing, 124-128 (2006), 2006.11.
65. Takahito Oyamada, Chihaya Adachi, Chung-Chih Wu, Chih-Hao Chang, Ken-Tsung Wong, Teng-Chih Chao, and Fu-Chuan Fang, Optical properties of oligo(9,9-diaryfluorene) derivatives in thin films and their application for organic light-emitting field-effect transistors, J. Phys. Chem. C, 111 , 108-115 (2007), 2006.12.
66. 安達千波矢,河村祐一郎,合志憲一,遠藤礼隆, 強リン光性分子薄膜の開発と発光デバイスへの応用, 応用物理, Vol.75, No.12, 1465-1470, 2006.12.
67. T. Matsushima and C. Adachi, Extremely low-voltage organic light-emitting diodes with p-doped alpha-sexithiophene hole transport and n-doped phenyldipyrenylphosphine oxide electron transport layers, Appl. Phys. Lett., 89, 253506, 2006.12.
68. Atsushi Takahashi, Ayataka Endo and Chihaya Adachi, Novel Electron-transporting Carbazolylphenylquinolines for the Phosphorescent Organic Light Emitting Diodes, Jpn. J. Appl. Phys., 45, 9228-9230, 2006.12.
69. L. Fenenko and C. Adachi, Influence of heat treatment on indium-tin-oxide anodes and copper phthalocyanine hole injection layers in organic light-emitting diodes, Thin Solid Films, 515, 4812-4818, 2007.01.
70. Toshinori Matsushima, Kenichi Goushi, and Chihaya Adachi, Charge-carrier injection characteristics at organic/organic heterojunction interfaces in organic light-emitting diodes, Chem. Phys. Lett., 435, 327-330, 2007.01.
71. Yuhki Terao, Hiroyuki Sasabe and Chihaya Adachi, Correlation of hole mobility, exciton diffusion length, and solar cell characteristics in phthalocyanine/fullerene organic solar cells, Appl. Phys. Lett., 90, 103515, 2007.03.
72. Makoto Nakahara, Masahiro Minagawa, Takahito Oyamada, Toyoyasu Tadokoro, Hiroyuki Sasabe and Chihaya Adachi, Analysis of Carrier Traps in Continuously Operated 4,4'-bis [N-(1-naphthyl)-N-phenyl-amino]-biphenyl/tris(8-gydroxyquinoline) aluminum-Based Organic Light-Emitting Diodes by Thermally Stimulated Current Measurement, Jpn.J.Applied.Physics, Part Ⅱ、46、L636-639 (2007), 2007.04.
73. H. Nakanotani, C. Adachi, S. Watanabe, and R. Katoh, Spectrally Narrow Emission from Organic Films Under Continuous-Wave Excitation, Appl.Pys.Lett., 90,231109, 2007.04.
74. Satria Zulkarnaen Bisri, Tetsuo Takahashi, Taishi Takenobu, Masayuki Yahiro, Chihaya Adachi, and Yoshihiro Iwasa, Ambipolar Field-Effect Transistor of High Photoluminescent Material Tetraphenylpyrene(TTPy) Single Crystal, Jpn.J.Appl.Phys., L596-L598, 2007.04.
75. Takahito Oyamada, Chih-Hao Chang, Teng-Chih Chao, Fu-Chuan Fang, Chung-Chih Wu, Ken-Tsung Wong, Hiroyuki Sasabe, and Chihaya Adachi, Optical Properties of Oligo(9,9-diarylfluorene) Derivatives in Thin Films and Their Application for Organic LIght-Emitting Field-Effect Transistors, J. Phys. Chem., 108-115, 2007.04.
76. M. Aonuma, T. Oyamada, T. Miki, H. Sasabe and C. Adachi, Material design of hole transport materials capable of thick film formation in organic light emitting diodes, Appl. Phys. Lett., 90, 183503 (2007), 2007.04.
77. Tomo Sakanoue, Masayuki Yahiro, Chihaya Adachi, Hiroyuki Uchiuzou, Takahashi Takayoshi and Akio Toshimitsu, Ambipolar light-emitting organic field-effect transistors using a wide-band-gap blue-emitting small molecule, Appl. Phys. Lett., 90, 171118 (2007), 2007.04.
78. Takahito Oyamada, Yusuke Sugawara, Yuhki Terao, Hiroyuki Sasabe and Chihaya Adachi, Top Light-Harvesting Organic Solar Cell Using Ultrathin Ag / MgAg Layer as Anode, Jpn. J. Appl. Phys., 46, 1734-1735 (2007), 2007.04.
79. Daisuke Yokoyama, Hajime Nakanotani, Yousuke Setoguchi, Masato Moriwake, Dai Ohnishi, Masayuki Yahiro, and Chihaya Adachi, Spectally Narrow Emission at Cutoff Wavelength from Edge of Electrically Pumped Organic Light-Emitting Diodes, Jpn. J. Appl. Phys., 46, L826-L829 (2007), 2007.07.
80. Kyung Soo Son, Masayuki Yahiro, Toshiro Imai, Hiroki Yoshizaki and Chihaya Adachi, Blue Organic Electrophosphorescence Diodes using Diarylamino-substituted Heterocyclic Compounds as Host Material, J. Photopolymer Sci. & Tech., 20, 47-51(2007), 2007.07.
81. Hajime Nakanotani, Masayuki Yahiro, Koki Yano and Chihaya Adachi, Ambipolar field-effect transistor based on organic-inorganic hybrid structure, Appl. Phys. Lett., 90, 262104 (2007), 2007.07.
82. Shohei Kinoshita, Tomo Sakanoue, Masayuki Yahiro, Kazuo Takimiya, Hideaki Ebata, Masaaki Ikeda, Hirokazu Kuwabara, and Chihaya Adachi, A high mobility ambipolar field effect transistor using a 2,6-diphenylbenzo[1,2-b:4,5-b']diselenophene/fullerene double layer, Solid State Comm., 2008.01.
83. Toshinori Matsushima and Chihaya Adachi, Suppression of exciton annihilation at high current densities in organic light-emittingdiode resulting from energy-level alignments of carrier transport layers, Appl.Phys. Lett., 92,063306(2008), 2008.02.
84. Tatsushi Baba, Hisashi Shimakoshi, Ayataka Endo, Chihaya Adachi and Yoshio Hisaeda, Photophysical and photocatalytic properties of beta-sulfonatoporphycenes, Chem.Lett., 37,264-265(2008), 2008.02.
85. Tomo Sakanoue, Masayuki Yahiro, Chihaya Adachi, Yoshiaki Oku, NOriyuki Shimoji, Takayoshi Takahashi and Akio Toshimitsu, Alignment-free process for asymmetric contact electrodes and their application in light-emitting organic field-effect transistors, Appl.PHys.Lett., 92,053505(2008), 2008.02.
86. Toshinori Matsushima and Chihaya Adachi, Enhanced hole injection and transport in molybdenum-dioxide-doped organic hole-transporting layers, J.Appl.Phys., 103,034501(2008), 2008.02.
87. Taishi Takenobu, Satria Zulkarnaen Bisri, Tetsuo Takahashi, Masayuki Yahiro, Chihaya Adachi and Yoshihiro Iwasa, High current density in light-emitting transistors of organic single crystals, PHys. Rev. Lett., 100, 066601(2008), 2008.02.
88. Toshinori Matsushima and Chihaya Adachi, Evaluating origin of electron traps in tris(8-hydroxyquinoline)aluminum thin films using a thermally stimulated current technique, Jpn. J. Appl. Phys., 47,1748(2008), 2008.03.
89. Hisashi Shimakoshi, Tatsushi Baba, Yusuke Iseki, Isao Aritome, Ayataka Endo, Chihaya Adachi and Yoshio Hisaeda, Photophysical and Photosensitizing properties of brominated porphycenes, Chem.Comm., 2882(2008), 2008.04.
90. Toshinori Matsushima and Chihaya Adachi, Highly efficient organic light-emitting diodes doped with thiophene/phenylene co-oligomer, Chem.Mat., 20, 2881-2883(2008), 2008.04.
91. Naoki Matsumoto, Masakazu Nishiyama , and Chihaya Adachi, Exciplex formation between Alq3 and hole transport materials and their photo-and electroluminescence characteristics, J.Phys.Chem.C., 112, 7735-7741(2008), 2008.04.
92. Toshinori Matsushima and Chihaya Adachi, Bright electroluminescence from single-layer organic light-emitting diodes comprising an ambipolar carrier transport layer of phenyldipyrenylphosphine oxide, Thin Solid Films, 516, 4288-4292 (2008), 2008.04.
93. Ayataka Endo, Kengo Suzuki, Toshitada Yoshihara, Seiji Tobita, Masayuki Yahiro and Chihaya Adachi, Measurement of photoluminescence efficiency of Ir(III)phenylpyridine derivatives in solution and solid-state films, CHem.Phys.Lett., 460,155-157(2008), 2008.05.
94. Tomo Sakanoue, Masayuki Yahiro, Chihaya Adachi, Kazuo Takimiya and Akio Toshimitsu, Electrical Characteristics of single-component ambipolar organic field-effect transistors and effects of the air exposure on them, F.Appl.PHys., 103, 094509(2008), 2008.05.
95. Kyung Soo Son, Masayuki Yahiro, Toshiro Imai, Hiroki Yoshizaki and Chihaya Adachi, Analyzing bipolar carrier transport characteristics of diarylamino-substituted heterocyclic compounds in organic light-emitting diodes by probing electroluminescence spectra, Chem.Mat., 20,4439-4446(2008), 2008.06.
96. Toshinori Matsushima and Chihaya Adachi, Temperature-independent current density voltage characteristics in tris(8-hydroxyquinoline)aluminum thin films, Thin Solid Films, 516, 5069(2008), 2008.06.
97. Hajime Nakanotani, Ryota Kabe, Masayuki Yahiro, Taishi Takenobu, Yoshihiro Iwasa and Chihaya Adachi, Blue-light-emitting ambipolar field-effect transistors using an organic single crystal of 1,4-bis(4-methylstyryl)benzene, Appl.Phys.Express, 1, 091801, 2008.08.
98. Kyung Soo Son, Masayuki Yahiro, Toshiro Imai, Hiroki Yoshizaki, Junichi Nishide, Hiroyuki Sasebe, and Chihaya Adachi, Roll-Off characteristics of electroluminescence efficiency on current in blue organic electrophosphorescence diodes, Jpn.J.Appl.Phys., 47, 7363(2008), 2008.09.
99. Daisuke Yokoyama, Akio Sakaguchi, Michio Suzuki and Chihaya Adachi, Horizontal molecular orientation in vacuum-deposited organic amorphous films of hole and electron transport materials, Appl.Phys.Lett, 93, 173302(2008), 2008.10.
100. Hisashi Shimakoshi, Tatsushi Baba, Yusuke Iseki, Ayataka Endo, Chihaya Adachi, Midori Watanabe, and Yoshio Hisaeda, Photosensitizing properties of the porphycene immobilized in sol-gel derived silica coating films, Tetrahdron Lett., 49,6198-6201(2008), 2008.10.
101. Hshiao-Wen Hung, Norimasa Yokoyama and Chihaya Adachi, Low driving voltage organic light emitting diode using phenanthrene oligomers as electron transport layer, Thin Solid Films, 516, 8717(2008), 2008.10.
102. Toshinori Matsushima and Chihaya Adachi, Enhancing hole transports and generating hole traps by doping organic hole transport layers with p-type molecules of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane, Thin Solid Films, 517, 874-877(2008), 2008.11.
103. R.Nishiyabu, N.Hashimoto, T.Cho, K.Watanabe, T.Yasunaga, A.Endo, K.Kaneko, T.Niidome, M.Murata, C.Adachi, Y.Katayama, M.Hashizume, and N.Kimizuka, Nanoparticles of adaptive supramolecular networks self-assembled from nucleotides and lanthanide ions, J.Am.Chem.Soc., 131, 2151-2158(2009), 2009.01.
104. Masaya Hirade,Hajime Nakanotani ,Reiji Hattori,Akihiro Ikeda,Masayuki Yahiro,Chihaya Adachi, Low threshold blue emission from first-order organic DFB laser using 2,7-bis[4-(N-carbazole)phenylvinyl]-9,9`-spirobifluorene as active gain medium, Mol.Cryst.Liq.Cryst, 504, 1-8, 2009.01.
105. Tomo Sakanoue,Toru Irie,Chihaya Adachi, Charge separation and transport behavior of a two-dimensional charge sheet at organic donor-acceptor heterointerface, J.Appl.Phys.., 105, 114502, 2009.01.
106. Daisuke Yokoyama,Akio Sakaguchi, Michio Suzuki, and Chihaya Adachi, Horizontal orientation of linear-shaped organic molecules having bulky substituents in neat and doped vacuum-deposited amorphous films, Org.Electron., 10、127-137(2009), 2009.02.
107. Daisuke Yokoyama,Akio Sakaguchi,MIchio Suzuki,Chihaya Adachi, Horizontal orientation of linear-shaped organic molecules having bulky substituents in near and doped vacuum-deposited amorphous films, Org.Electron.., 2009.02.
108. R.Nishiyabu,N.Hashimoto,T.Cho,K.Watanabe,T.Yasunaga,A.Endo,K.Kaneko,T.Niidome,M.Murata,C.Adachi,Y.Katayama,M.Hashizume,N.Kimuzuka, Nanoparticles of adaptive supramolecular networks self-assembled from nucleotides and lanthanide irons, J.Am.Chem.Soc.., 131, 2151-2158, 2009.03.
109. Kenji Kawano, Jun Sakai, Masayuki Yahiro, and Chihaya Adachi, Effect of solvent on fabrication of active layers in organic solar cells based on poly(3-hexylthiophene)and fullerene derivatives, Sol.Energy Mater.Sol.Cells, 93、514-518(2009), 2009.04.
110. Tung-Huei Ke,Robert Gehlhaar,Chih-Hsin Chen,Jiann-T'suen Lin,Chung-Chih Wu,Chihaya Adachi, High efficiency blue light emitting unipolar transistor incorporating multifunctional electrodes, Appl.Phys.Lett.., 94, 153307, 2009.04.
111. Kenji kawano,Jun Sakai,Masyuki Yahiro,Chihaya Adachi, Efffect of solvent on fabrication of active layers in organic solar cells based on poly(3-hexylthiophene)and fullerene derivatives, Sol.Energy Mater.Sol.Cells., 2009.04.
112. Hajime Kubota,Msatoshi Saito,Hiroaki Nakamura, Chihaya Adachi, Tunig of threshold voltage by interfacial carrier doping in organic single crystal ambipolar light-emittting transistors and their bright electroluminescence, Appl.Phys.Lett.., 95, 103307, 2009.05.
113. Ayataka Endou,Chihaya Adachi, Photoluminescence characteristics of tris(2-phenylquinoline)iridium (Ⅲ)dispersed in an iridium complex host layer, Chem.Phys.Lett.., 483, 224-226, 2009.05.
114. Ayataka Endou,Chihaya Adachi, Photoluminescence characteristics of tris(2-phenylquinoline)iridium (Ⅲ)dispersed in an iridium complex host layer, Chem.Phys.Lett.., 483, 224-226, 2009.05.
115. Ayataka Endou,Chihaya Adachi, Photoluminescence characteristics of tris(2-phenylquinoline)iridium (Ⅲ)dispersed in an iridium complex host layer, Chem.Phys.Lett.., 483, 224-226, 2009.05.
116. Ryota Kabe,Hajime Nakanotani,Tomo Sakanoue,Masayuki Yahiro,Chihaya Adachi, Effect of molecular morpholgy on amplified spontaneous emission of bis-styrylbenzene derivatives, Adv.Mater.., 40, 4034-4038, 2009.05.
117. Guoliang Mao, Akihiro Orita, Larysa Fenenko, Masayuki Yahiro, Chihaya Adachi, and Junzo Otera, Blue emitting fluorophores of phenyleneethynylenes substituted by diphenylethenyl terminal groups for organic light emnitting diodes, Mat.Chem.Phys., 115, 378-384(2009), 2009.05.
118. N.Matsumoto,T.Miyazaki,M.Nishiyama,C.Adachi, Efficient deep-blue organic light-emitting diodes based on 9,9-bis(4-biphenyly)fluorene derivatives, J.Phys.Chem.C., 113, 6261-6266, 2009.05.
119. Gouliang Mao,Akihiro Orita,Larysa Feneko,Masayuki Yahiro, Chihaya Adachi,Junzo Otera, Blue emitting fluorophores of phenyleneethnylense substituted by diphenylethenyl terminal groups for organic light emitting diodes, Mat.Chem.Phys.., 115, 378-384, 2009.05.
120. Daisuke Yokoyama, Masato Moriwake, and Chihaya Adachi, Spectrally narrow emission at cutoff wavelength from edge of optically and electrically pumped organic anisotropic films, J.Appl.Phys., J.Appl.Phys.103,123104(2008)
J.Appl.Phys.104,039909(2008), 2009.06.
121. Y.Shibano,H.Imahori,C.Adachi, Organic Thin-Film Solar Cell Using Electron-Donating Perylene Tetracarboxylic Acid Derivatives, J.Phys.Chem.C., 113, 15454-15466, 2009.07.
122. T.Izawa, H.Mori, Y.Shimamura, M.Iwatani, E.Miyazaki, K.Takimiya, HW.Hung, M.Yahiro and C.Adachi, Molecular Modification of 2,7-Dipheny[1]benzothieno[3,2-b]benzothiophene(DPh-BTBT)with Diarylamino Substituents:From Crystalline Order to Amorphous State in Evaporated Thin Films, Chem.Lett, 38,420-421, 2009.07.
123. Hajime Nakanotani,Masatoshi Saito,Hiroaki nakamura,Chihaya Adachi, Highly balanced ambipolar mobilities with intense electroluminescence in field-effect transistors based on organic single crystal oligo(p-phenylenevinylene)derivatives, Appl.Phys.Lett.., 95, 033308, 2009.07.
124. Denghui Xu Ke,Chihaya Adachi, Organic light-emitting diode having liquid emitting layer, Appl.Phys.Lett.., 95, 053304, 2009.08.
125. Tung-Huei Ke,Robert Gehlhaar,Chih-Hsin Chen,Jiaan-T Lin,Chung-Chih Wu,Chihaya Adachi, Single molecule color controllable light emitting organic field effect transistors for white light emission with high color stability, Appl.Phys.Lett.., 95, 063303, 2009.08.
126. Korefumi Kubota,Takuji Kato, Chihaya Adachi, Control of the molecular orientation of a 2,2`-bithiophene-9,9`-dioctylfluorene copolymer by laser-annealing and subsequent enhancement of FET characteristics, Appl.PHys.Lett.., 95, 073303, 2009.08.
127. Ayataka Endo,Mai Ogasawara,Atsushi Takahashi,Disuke Yokoyama,Yoshimine Katou,Chihaya Adachi, Thermally activated delayed fluorescence from Sn4+-porphyrin comlexes and their application to organic light emitting diodes-a novel mechanism for electroluminescence, Adv.Mater, 21, 4802-4906, 2009.08.
128. Robert Gehlhaar, Masayuki Yahiro and Chihaya Adachi, Finite difference time domain analysis of the light extraction efficency in organic light-emitting field-effect transistors, J.Appl.Phys., 104,033116(2008), 2009.08.
129. Korefumi Kubota, Takuji Kato and Chihaya Adachi, Control of the molecular orientation of a 2,2'-bithiophene-9,9-dioctylfluorene copolymer by laser-annealing and subsequent enhancement of the FET characteristics, Appl. Phys. Lett (accepted), 2009.08.
130. Kenji Kawano and Chihaya Adachi, Evaluating carrier accumulation in degraded bulk heterojunction organic solar cells by a thermally stimulated current technique, Adv.Funct. Mat., 19, 3934-3940, 2009.11.
131. F.Becker, M.Langner, H.FrAob, G.Lyssenko, K.Leo and C.Adachi, Dependence of polarization splitting on mode tuning in microcavities, Appl.Phys.Lett., (in press), 2009.11.
132. Daisuke Yokoyama,Akio Sakaguchi,Michio Suzuki,Chihaya Adachi, Enhancement of electron transport by horizontal molecular orientation of oxadiazole planar molecules in organic amorphous films, Appl.Phys.Lett., 95, 243303, 2009.12.
133. Hajime Nakanotani,Masatoshi Saitou,Hiroaki Nakamura,Chihaya Adachi, Emission color tuning in ambipolar organic single crystal field-effect transistors by dye-doping, Adv.Funct.Mat, 2010.04.
134. Manabu Nakata,Kenji kawano, Mao Yasumatsu,Masayuki Yahiro,Chihaya Adachi, Formation of Organic Nanodots with a Minimum Diameter of 40 nm Using Conventional Vacuum Vapor Deposition, Appl.Ohys.Exp.., 3, 055201, 2010.04.
135. Naoki Matsumoto,Chihaya Adachi, Exciplex formations at HTL/Alq3 interface in organic light-emitting diode: influence of electron-hole recombination zone and electric field, J.Phys.Chem.C., 114(10), 4652-4658, 2010.04.
136. Joerg Frischeisen ,Daisuke Yokoyama,Chihaya Adachi, Wolfgang Bruetting, Determination of molecular dipole orientation in fluorescent organic thin films by photoluminescence measurement, Appl.Phys.Lett., 96, 073302, 2010.04.
137. Daisuke Yokoyama,Chihaya Adachi, In situ real-time spectroscopic ellipsometry measurement for investigation of molecular orientation in organic amorphous multilayer structures, J.Appl.Phys., 2010.05.
138. Ayataka Endo,Chihaya Adachi, Photoluminescence characteristics of organic host materials with wide energy gaps for organic electrophosphorecent devices, Jpn.JAppl..Phys., 49, 050205, 2010.05.
139. Kenji Kawano,Chihaya Adachi, Reduced initial degradation of bulk heterojunction organic solar cells by incorporation of stacked fullerene and lithium fullerene interlayers, Appl.Phys.Lett.., 96, 053307, 2010.05.
140. Hajime Nakanotani,Chihaya Adachi, Organic light-emitting diodes containing multilayers of organic single crystals, Appl.Phys.Lett.., 96, 053301, 2010.05.
141. Takatoshi Nishio, Makoto Kashiwagi,Koji Miyazaki,Masayuki Yahiro,Chihaya Adachi, Preparation under high humidity conditions of nano-porous polymer film with 80 nm minimum pore size, Appl.Phys.Exp.., 3, 025201, 2010.05.
142. Daisuke Yokoyama ,Yousuke Setoguchi,Akiko Sakaguchi,Michio Suzuki,Chihaya Adachi, Orientation control of linear-shaped molecules in vacuum-deposited organic amorphous films and its effect on carrier mobilities, Adv.Funct.Mat.., 20, 386-391, 2010.05.
143. Kentaro Hrada, Mao Sumino, Chihaya Adachi, Saburo Tanaka and Koji Miyazaki, Improved thermoelectroc performance of organic thin-film elements utilizing a bilayer structure of pentacene and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane(F4-TCNQ), Appl. Phys. Lett., 10.1063/1.3456394, 96, 253304, 2010.06.
144. Yousuke Setoguchi and Chihaya Adachi, Suppression of roll-off characteristics of electroluminescence at high current densities in organic light emitting diodes by introducing reduced carrier injection barriers, J. Appl. Phys., 10.1063/1.3488883, 108, 064516, 2010.09.
145. Kentaro Harada, Tomohiko Edura and Chihaya Adachi, Nanocrystal growth and improved performance of small molecule bulk heterojunction solar cells composed of a blend of chloroaluminum Phthalocyanine and C70, Appl. Phys. Exp., 10.1143/APEX.3.121602, 3, 121602, 2010.12.
146. Masaya Hirade, Hajime Nakanotani, Masayuki Yahiro and Chihaya Adachi, Formulation of organic crystalline nanopillar arrays and their application to organic photovoltaic cells, Appl. Mat. Int., 10.1021/am100915s, 3, 80-83, 2010.12.
147. Hajime Nakanotani, Hayato Kakizoe and Chihaya Adachi, Highly conductive interface between a rubrene single crystal and a molybdenum oxide layer and its application in transistors, Solid State Comm., 10.1016/j.ssc.2010.10.004, 151, 93-96, 2011.01.
148. Shuzo Hirata, Korefumi Kubota, Heo Hyo Jung, Osamu Hirata, Kenichi Goushi, Masayuki Yahiro, and Chihaya Adachi, Improvement of electroluminescnce performance of organic light emitting diodes with a liquid emiting layer by introduction of electrolyte and a hole-blocking layer, Adv. Mater., 10.1002/adma.201003505, 23, 7, 889-893, 2011.02.
149. Ayataka Endo, Keigo Sato, Kazuaki Yoshimura, Takahiro Kai, Atsushi Kawada, Hiroshi Miyazaki and Chihaya Adachi, Efficient up-convention of triplet excitons into a singlet state and its application for organic light emitting diodes, Appl.Phys. Lett., 10.1063/1.3558906, 98, 083302, 2011.03.
150. Hirotake So, Hirofumi Watanabe, Masayuki Yahiro, Yu Yang, Yuji Oki and Chihaya Adachi, highly photostable distributed-feedback polymer waveguide blue laser using spirobifluorene derivatives, Opt. Mat., 33, 6, 755-758, 2011.04.
151. Daisuke Yokoyama, Hisahiro Sasabe, Yukio Furukawa、Chihaya Adachi and Junji Kido, Molecular Stacking Induced by Intermolecular C–H···N Hydrogen Bonds Leading to High Carrier Mobility in Vacuum-Deposited Organic Films, Adv. Func.Mat., 10.1002/adfm.201001919, 21, 8, 1375-1382, 2011.04.
152. Satria Zulkarnaen Bisri, Taishi Takenobu, Kosuke Sawabe, Satoshi Tsuda, Yohei Yomogida, Takeshi Yamao, Shu Hotta, Chihaya Adachi, Yoshihiro Iwasa, p-i-n Homojunction in Organic Light-Emitting Transistors, Advanced Materials, 10.1002/adma.201004572, 23, 24, 2753-2758, 2011.05.
153. Jorg Frischeisen, Daisuke Yokoyama, Ayataka Endo, Chihaya Adachi, Wolfgang Brutting, Increased light outcoupling efficiency in dye-doped small molecule organic light-emitting diodes with horizontally oriented emitters, Organic Electronics, 10.1016/j.orgel.2011.02.005, 12, 5, 809-817, 2011.05.
154. Daisuke Matsuo, Xin Yang, Akiko Hamada, Kyo Morimoto, Takuji Kato, Masayuki Yahiro, Chihaya Adachi, Akihiro Orita, and Junzo Otera, Fluoro-substituted phenyleneethynylenes: Acetylenic n-type organic semiconductors, Chem. Lett., 10.1002/chin.201118083, 39, 1400, 2011.05.
155. Joerg Frischeisen, Quan Niu, Robert Gehlhaar, Giuseppe Scarpa, Chihaya Adachi, Paolo Lugli, and Wolfgang Brutting, Light extractionfrom surface plasmons and waveguide modes with nanoimprinted gratings in organic light-emitting diodes, Optical Express, 10.1364/OE.19.0000A7, 19, S1, A7, 2011.05.
156. Makoto Kashiwagi, Shuzo Hirata, Kentaro Harada, Yanqiong Zheng, Masayuki Yahiro, Chihaya Adachi and Koji Miyazaki, Enhanced Figure of merit of a porous thin film of bismuth antimony telluride manuscript, Appl. Phys. Lett. 98, 10.1063/1.3543852, 98, 023114, 2011.05.
157. Hizuru Nakajima, Yukiko Okuma, Kazuhiro Morioka, Mayo Miyake, Akihide Hemmi, Tatsuya Tobita, Masayuki Yahiro, Daisuke Yokoyama, Chihaya Adachi, Nobuaki Soh, Koji Nakano, Shuhua Xue, Hulie Zeng, Katsumi Uchiyama, Toshihiko Imato, An integrated enzyme-linked immunosorbent assay system with an organic light-emitting diode and a charge-coupled device for fluorescence detection, Journal of Separate Science, .1002/jssc.201100429, 34, 20, 2906-2912, 2011.08.
158. Takuji Kato, Chikako Origuchi, Kyoji Tsutsui, Yasukiyo Ueda, and Chihaya Adachi, High Carrier Mobility of 3.8 cm2V-1s-1 in Polydiacetylene Thin-Films Polymerized by Electron Beam Irradiation, Applied Physics Express, 10.1143/APEX.4.091601, 4, 091601, 2011.08.
159. Toshiharu Arai, Kenichi Goushi, Hiroko Nomura, Tomohiko Edura, Chihaya Adachi, Two-dimensional orientation control of organic semiconducting amorphous films by mechanical brushing, Applied Phyics Letters, doi.org/10.1063/1.3608315, 99, 5, 053303, 2011.08.
160. Takeshi Komino, Hiroko Nomura, Masayuki Yahiro, Kuniaki Endo and Chihaya Adachi, Dependence of the Amplified Spontaneous Emission Threshold in Spirofluorene Thin Films on Molecular Orientation, The Journal of Physical Chemistry C, 10.1021/jp2007717, 115, 40, 19890–19896, 2011.09.
161. Mao Sumino, Kentaro Harada, Masaaki Ikeda, Saburo Tanaka, Koji Miyazaki, and Chihaya Adachi, Thermoelectric Properties of n-type C60 Thin Films and Their Application in Organic Thermovoltaic Devices, Applied Physics Letters, 10.1063/1.3631633, 99, 093308, 2011.09.
162. Masaya Hirade and Chihaya Adachi, Small molecular organic photovoltaic cells with exciton blocking layer at anode interface for improved device performance, Applied Physics Letters, 10.1063/1.3650472, 99, 15, 153302, 2011.10.
163. Shuzo Hirata, Toshiro Tsuji, Yoshimine Kato, CHIHAYA ADACHI, Reversible Coloration Enhanced by Electrochemical Deposition of an Ultra-thin Zinc Layer onto an Anodic Nanoporous Alumina Layer, Adv. Funct. Mater., 10.1002/adfm.201200353, 22, 20, 4195-4201, 2012.01.
164. Xiang Dong Luo, Umme Farva, Nguyen Tam Nguyen Truong, Kyung Soo Son, Pei Sheng Liu, Chihaya Adachi, Chinho Park, Synthesis and characterization of CdSe nanocrystals capped with TOPO and pyridine, Journal of Crystal Growth, 339, 1, 22-30, 2012.01.
165. Atsushi Wada, QISHENG ZHANG, Takuma Yasuda, Takasu Isao, Shintaro Enomoto, CHIHAYA ADACHI, Efficient Luminescence from a Copper(I) Complex Doped in Organic Light-Emitting Diodes by Suppressing C-H Vibrational Quenching, Chem. Comm., 10.1039/C2CC31509B, 48, 5340-5342, 2012.03.
166. CHIHAYA ADACHI, QISHENG ZHANG, Takeshi Komino, Shuping Huang, Triplet Exciton Confinement in Green Organic Light-Emitting Diodes Containing Luminescent Charge-Transfer Cu(I) Complexes, Adv. Funct. Mater, 10.1002/adfm.201101907, 22, 11, 2327-2336, 2012.03.
167. Shuzo Hirata, Hyo Jung Heo, Yuki Shibano, Osamu Hirata, Masayuki Yahiro, and Chihaya Adachi, Improved Device Lifetime of Organic Light Emitting Diodes with an Electrochemically Stable-Conjugated Liquid Host in the Liquid Emitting Layer, Japanese Journal of Applied Physics, 10.1143/JJAP.51.041604, 51, 041604, 2012.03.
168. Kenichi Goushi, Kou Yoshida, Keigo Sato, Chihaya Adachi, Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion, Nature Photonics, in press, 2012.03, エキサイプレックスと呼ばれる種類の異なる2つの分子の会合体を有機エレクトロルミネッセンス素子(有機EL素子)の発行材料に適応し、電流励起によるエキサイプレックス発光の中では、最も高い外部量子効率が5%を超える世界トップレベルの高効率化の実現に成功した。本成果は低消費電力で環境負荷が少ない有機ELテレビや有機EL照明などの次世代エレクトロニクス分野において、新たな発光分子の設計指針やデバイスの構築への大きな貢献が期待できる。.
169. Hitoshi Yamamoto, CHIHAYA ADACHI, Michael S. Weaver, Julie J. Brown, Identification of device degradation positions in multi-layered phosphorescent organic light emitting devices using water probes, APPLIED PHYSICS LETTERS, 10.1063/1.4711129, 100, 18, 2012.04.
170. N. Niimi, H. Mori, E. Miyazaki, I. Osaka, K. takimiya, CHIHAYA ADACHI, [2,2']Bi[naphtho[2,3-b]furanyl]: a versatile organic semiconductor with a furan-furan junction, Chem. Comm., http://xlink.rsc.org/?DOI=c2cc31960h, 48, 5892-5894, 2012.04.
171. Tetsuya Nakagawa, Sung-Yu Ku, Ken-Tsung Wong, CHIHAYA ADACHI, Electroluminescence Based on Thermally Activated Delayed Fluorescence Generated by a Spirobifluorene Donor-Acceptor Structure, Chem. Comm., http://xlink.rsc.org/?DOI=c2cc31468a, 48, 9580, 2012.04.
172. Kim Jun Yun, Daisuke Yokoyama, CHIHAYA ADACHI, Horizontal Orientation of Disk-like Hole Transport Molecules and Their Application for Organic Light-Emitting Diodes Requiring a Lower Driving Voltage, JOURNAL OF PHYSICAL CHEMISTRY C, 10.1021/jp301650x, 116, 15, 8699-8706, 2012.04.
173. CHIHAYA ADACHI, Kenichi Goushi, Kou Yoshida, Keigo Sato, Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion, NATURE PHOTONICS, 10.1038/nphoton.2012.31, 6, 4, 253-254, 2012.04.
174. Korefumi Kubota, Shuzo Hirata, Yuki Shibano, Osamu Hirata, Masayuki Yahiro, CHIHAYA ADACHI, Liquid Carbazole Substituted with a Polyethylene Oxide Group and its Application for Liquid Organic Light Emitting Diodes, Chem. Lett, http://dx.doi.org/10.1246/cl.2012.934, 41, 9, 934-936, 2012.05.
175. Takeshi Komino, Hiroko Nomura, Masayuki Yahiro, CHIHAYA ADACHI, Real-Time Measurement of Molecular Orientational Randomization Dynamics during Annealing Treatments by In-Situ Ellipsometry, JOURNAL OF PHYSICAL CHEMISTRY C, 10.1021/Jp302158k, 116, 21, 11584-11588, 2012.05.
176. Zou Ye, Zhen Bo, William John Potscavage, Masaya Hirade, ZHENG YANQIONG, CHIHAYA ADACHI, Very high open-circuit voltage of 5.89 V in organic solar cells with 10-fold-tandem structure, APPLIED PHYSICS LETTERS, 10.1063/1.4729009, 100, 24, 243302, 2012.06.
177. Mayo Miyake, Hizuru Nakajima, Akihide Hemmi, Masayuki Yahiro, CHIHAYA ADACHI, Nobuaki Soh, Ishimatsu Ryoichi, Koji Nakano, Uchiyama Katsumi, Toshihiko Imato, Performance of an organic photodiode as an optical detector and its application to fluorometric flow-immunoassay for IgA, Talanta, 10.1016/j.talanta.2012.02.006., 96, 132-139, 2012.07.
178. Ryosuke Kondo, Takuma Yasuda, YANG YUSEOK, Jun Yun Kim, CHIHAYA ADACHI, Highly luminescent π-conjugated dithienometalloles: photophysical properties and their application in organic light-emitting diodes, J. Mater. Chem, 10.1039/C2JM33526C, 33, 22, 16810-16816, 2012.07.
179. Kenichi Goushi, CHIHAYA ADACHI, Efficient organic light-emitting diodes through up-conversion from triplet to singlet excited states of exciplexes, APPLIED PHYSICS LETTERS, 10.1063/1.4737006, 101, 2, 023306, 2012.07.
180. Kazunori Togashi, Shinataro Nomura, Norimasa Yokoyama, Takuma Yasuda, CHIHAYA ADACHI, Low Driving Voltage Characteristics of Triphenylene Derivatives as Electron Transport Materials in Organic Light-Emitting Diodes, J. Mater. Chem. 2012, 22, 20689-20695., 10.1039/c2jm33669c, 22, 38, 20689-20695, 2012.08.
181. Lee Sae Youn, Takuma Yasuda, Hiroko Nomura, CHIHAYA ADACHI, High-efficiency organic light-emitting diodes utilizing thermally activated delayed fluorescence from triazine-based donor-acceptor hybrid molecules, APPLIED PHYSICS LETTERS, 10.1063/1.4749285, 101, 9, 093306, 2012.08.
182. QISHENG ZHANG, Li Jie, Katsuyuki Shizu, HUANG SHUPING, Hiroshi Miyazaki, Shuzo Hirata, CHIHAYA ADACHI, Design of Efficient Thermally Activated Delayed Fluorescence Materials for Pure Blue Organic Light Emitting Diodes, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 10.1021/ja306538w, 134, 36, 14706-14709, 2012.09.
183. Changhoon Shim, Shuzo Hirata, Juro Oshima, Tomohiko Ezura, Reiji Hattori, CHIHAYA ADACHI, Uniform and refreshable liquid electroluminescent device with a back side reservoir, APPLIED PHYSICS LETTERS, 10.1063/1.4749791, 101, 11, 113302, 2012.09.
184. Yukitani Mizuno, Isao Takasu, Shuichi Uchikoga, Shuichi Enomoto, Tomoaki Sawabe, Akiko Amano, Atsushi Wada, Tomoko Sugizaki, Jiro Yoshida, Tomio Ono, CHIHAYA ADACHI, Fluorinated Carbazole Derivatives as Wide-Energy-Gap Host Material for Blue Phosphorescent Organic Light-Emitting Diodes, JOURNAL OF PHYSICAL CHEMISTRY C, 10.1021/jp303085h, 116, 39, 20681-20687, 2012.10.
185. Yukitani Mizuno, Isao Takasu, Shuichi Uchikoga, Shuichi Enomoto, Tomoaki Sawabe, Akiko Amano, Atsushi Wada, Tomoko Sugizaki, Jiro Yoshida, Tomio Ono, CHIHAYA ADACHI, Fluorinated Carbazole Derivatives as Wide-Energy-Gap Host Material for Blue Phosphorescent Organic Light-Emitting Diodes, JOURNAL OF PHYSICAL CHEMISTRY C, 10.1021/jp303085h, 116, 39, 20681-20687, 2012.10.
186. YANG YUSEOK, Takuma Yasuda, CHIHAYA ADACHI, Organic Single-Crystal Transistors Based on pi-Extended Heteroheptacene Microribbons, Bull. Chem. Soc. Jpn. 2012, 85, 1186-1191., http://dx.doi.org/10.1246/bcsj.20120178, 85, 1186-1191, 2012.10.
187. Hiroyuki Tanaka, Katsuyuki Shizu, Hiroshi Miyazaki, CHIHAYA ADACHI, Efficient green thermally activated delayed fluorescence (TADF) from a phenoxazine-triphenyltriazine (PXZ-TRZ) derivative, Chem. Comm., 10.1039/C2CC36237F, 48, 93, 11392-11394, 2012.11.
188. Gabor Mehes, Hiroko Nomura, Tetsuya Nakagawa, CHIHAYA ADACHI, Enhanced Electroluminescence Efficiency in a Spiro-Acridine Derivative through Thermally Activated Delayed Fluorescence, Angewandte Chemie, 10.1002/anie.201206289, 51, 45, 11311-11315, 2012.11.
189. Manabu Nakata, Kenji Kawano, Masayuki Yahiro, CHIHAYA ADACHI, Formation of nanostructured donor/acceptor interfaces and their application to organic photovoltaic cells, THIN SOLID FILMS, 10.1016/j.tsf.2012.08.008, 522, 357-360, 2012.11.
190. Hiroki Uoyama, Kenichi Goushi, Katsuyuki Shizu, Hiroko Nomura, CHIHAYA ADACHI, Highly efficient organic light-emitting diodes from delayed fluorescence, NATURE, 10.1038/nature11687, 492, 7428, 234-238, 2012.12, The inherent flexibility afforded by molecular design has accelerated the development of a wide variety of organic semiconductors over the past two decades. In particular, great advances have been made in the development of materials for organic light-emitting diodes (OLEDs), from early devices based on fluorescent molecules1 to those using phosphorescent molecules2, 3. In OLEDs, electrically injected charge carriers recombine to form singlet and triplet excitons in a 1:3 ratio1; the use of phosphorescent metal–organic complexes exploits the normally non-radiative triplet excitons and so enhances the overall electroluminescence efficiency2, 3. Here we report a class of metal-free organic electroluminescent molecules in which the energy gap between the singlet and triplet excited states is minimized by design4, thereby promoting highly efficient spin up-conversion from non-radiative triplet states to radiative singlet states while maintaining high radiative decay rates, of more than 106 decays per second. In other words, these molecules harness both singlet and triplet excitons for light emission through fluorescence decay channels, leading to an intrinsic fluorescence efficiency in excess of 90 per cent and a very high external electroluminescence efficiency, of more than 19 per cent, which is comparable to that achieved in high-efficiency phosphorescence-based OLEDs3..
191. Takashi Kasahara, Shigeyuki Matsunami, Tomohiko Ezura, Juro Oshima, CHIHAYA ADACHI, Shuichi Shoji, Jun Mizuno, Fabrication and performance evaluation of microfluidic organic light emitting diode, Sens. Act. A-Phys, tp://www.sciencedirect.com/science/article/pii/S0924424712007777, 2013.01.
192. Atsushi Wada, Takuma Yasuda, QISHENG ZHANG, YANG YUSEOK, Isao Takasu, Shinataro Enomoto, CHIHAYA ADACHI, A host material consisting of a phosphinic amide directly linked donor–acceptor structure for efficient blue phosphorescent organic light-emitting diodes, J. Mater. Chem. C, 10.1039/C3TC00939D, 13, 1, 2404-2407, 2013.02.
193. Shuzo Hirata, Totani Kenro, Junxiang Zhang, Takashi yamashita, Hironori Kaji, Seth R. Marder, Toshiyuki Watanabe, CHIHAYA ADACHI, Efficient Persistent Room Temperature Phosphorescence in Organic Amorphous Materials under Ambient Conditions, Adv. Funct. Mater., 10.1002/adfm.201203706, 2013.02.
194. Masaya Hirade, Takuma Yasuda, CHIHAYA ADACHI, Effects of Intramolecular Donor-Acceptor Interactions on Bimolecular Recombination in Small-Molecule Organic Photovoltaic Cells, JOURNAL OF PHYSICAL CHEMISTRY C, 10.1021/jp400386q, 117, 10, 4986-4991, 2013.03.
195. Masaya Hirade, Takuma Yasuda, CHIHAYA ADACHI, Effects of Intramolecular Donor-Acceptor Interactions on Bimolecular Recombination in Small-Molecule Organic Photovoltaic Cells, JOURNAL OF PHYSICAL CHEMISTRY C, 10.1021/jp400386q, 117, 10, 4986-4991, 2013.03.
196. Takeshi Komino, Hiroko Nomura, Masayuki Yahiro, CHIHAYA ADACHI, Reorganization of the molecular orientation at the organic/substrate interface in spirofluorene thin films, CHEMICAL PHYSICS LETTERS, 10.1016/j.cplett.2013.01.056, 563, 20, 70-75, 2013.03.
197. Kazunori Togashi, Takuma Yasuda, CHIHAYA ADACHI, Triphenylene-Based Host Materials for Low-Voltage and Highly Efficient Red Phosphorescent Organic Light-Emitting Diodes, Chem. Lett. 2013, 42, in press., http://dx.doi.org/10.1246/cl.121247, 42, 4, 383-385, 2013.03.
198. Kim Jun Yun, Takuma Yasuda, YANG YUSEOK, CHIHAYA ADACHI, Bifunctional Star-Burst Amorphous Molecular Materials for OLEDs: Achieving Highly Efficient Solid-State Luminescence and Carrier Transport Induced by Spontaneous Molecular Orientation, Adv. Mater. 2013, 25, in press., 2666-2671, 2013.03.
199. Munetomo Inoue, Kenichi Goushi, Kuniaki Endo, Hiroko Nomura, CHIHAYA ADACHI, Reduced amplified spontaneous emission threshold in organic semiconductor laser structure with relaxed roll-off characteristics under high current densities, Journal of Luminescence, http://authors.elsevier.com/sd/article/S0022231313002123, 2013.04.
200. ZHENG YANQIONG, William John Potscavage, Takeshi Komino, CHIHAYA ADACHI, Highly efficient bulk heterojunction photovoltaic cell based on tris[4-(5-phenylthiophen-2-yl)phenyl]amine and C70 combined with optimized electron transport layer, Appl. Phys. Lett., http://dx.doi.org/10.1063/1.4801954, 152, 153302, 2013.04.
201. ZHENG YANQIONG, William John Potscavage, Takeshi Komino, Masaya Hirade, Junji Adachi, CHIHAYA ADACHI, Highly efficient bulk heterojunction photovoltaic cells based on C70 and tetraphenyldibenzoperiflanthene, Appl. Phys. Lett., http://dx.doi.org/10.1063/1.4801647, 102, 143304, 2013.04.
202. Kazunori Togashi, Yuta Sagara, Takuma Yasuda, CHIHAYA ADACHI, Molecular Design of High Molecular Orientation Electron Transport Materials and Application to Organic Light-Emitting Diodes, Chem. Lett. 3013, 42, in press., 2013.04.
203. Maki Taguchi, Tetsuya Nakagawa, Takuya Nakashima, CHIHAYA ADACHI, Photo-patternable electroluminescence based on one-way photoisomerization reaction of tetraoxidized triangle terarylenes, Chem. Comm., 10.1039/C3CC41825A, 2013.05.
204. Jie Li, Tetsuya Nakagawa, QISHENG ZHANG, Hiroko Nomura, Hiroshi Miyazaki, CHIHAYA ADACHI, Highly Efficient Organic Light-Emitting Diode Based on a Hidden Thermally Activated Delayed Fluorescence Channel in a Heptazine Derivative, Adv. Mat., http://dx.doi.org/10.1002/adma.201300575, 2013.05.
205. CHIHAYA ADACHI, Organic Luminescent Molecule with Energetically Equivalent Singlet and Triplet Excited States for Organic Light-Emitting Diodes, PHYSICAL REVIEW LETTERS, 10.1103/PhysRevLett.110.247401, 110, 24, 2013.06.
206. CHIHAYA ADACHI, High Performance Organic Field-Effect Transistors Based on Single-Crystal Microribbons and Microsheets of Solution-Processed Dithieno[3,2-b:2',3'-d]thiophene Derivatives, Chem. Commun. 2013, 49, 6483-6485., 2013.06.
207. CHIHAYA ADACHI, Self-Organizing Mesomorphic Diketopyrrolopyrrole Derivatives for Efficient Solution-Processed Organic Solar Cells, CHEMISTRY OF MATERIALS, 10.1021/cm401244x, 25, 12, 2549-2556, 2013.06.
208. CHIHAYA ADACHI, Oxadiazole- and Triazole-Based Highly-Efficient Thermally-Activated Delayed Fluorescence Emitters for Organic Light-Emitting Diodes, J. Mater. Chem. C 2013, 1, 4599-4604., 2013.06.
209. CHIHAYA ADACHI, Droplet Manipulation by an External Electric Field for Crystalline Film Growth, LANGMUIR, 10.1021/la401729k, 29, 30, 9592-9597, 2013.07.
210. CHIHAYA ADACHI, Promising operational stability of high-efficiency organic light-emitting diodes based on thermally activated delayed fluorescence, SCIENTIFIC REPORTS, 10.1038/srep02127, 3, 2013.07.
211. CHIHAYA ADACHI, Solvent Effect on Thermally Activated Delayed Fluorescence by 1,2,3,5-Tetrakis(carbazol-9-yl)-4,6-dicyanobenzene, JOURNAL OF PHYSICAL CHEMISTRY A, 10.1021/jp404120s, 117, 27, 5607-5612, 2013.07.
212. CHIHAYA ADACHI, Capacitance-voltage characteristics of a 4,4 '-bis[(N-carbazole)styryl]biphenyl based organic light-emitting diode: Implications for characteristic times and their distribution, APPLIED PHYSICS LETTERS, 10.1063/1.4819436, 103, 9, 2013.08.
213. CHIHAYA ADACHI, Suppression of Efficiency Roll-Off Characteristics in Thermally Activated Delayed Fluorescence Based Organic Light-Emitting Diodes Using Randomly Oriented Host Molecules, CHEMISTRY OF MATERIALS, 10.1021/cm4011597, 25, 15, 3038-3047, 2013.08.
214. CHIHAYA ADACHI, Twisted Intramolecular Charge Transfer State for Long-Wavelength Thermally Activated Delayed Fluorescence, CHEMISTRY OF MATERIALS, 10.1021/cm402428a, 25, 18, 3766-3771, 2013.09.
215. CHIHAYA ADACHI, Computational Prediction for Singlet- and Triplet-Transition Energies of Charge-Transfer Compounds, JOURNAL OF CHEMICAL THEORY AND COMPUTATION, 10.1021/ct400415r, 9, 9, 3872-3877, 2013.09.
216. CHIHAYA ADACHI, A Six-Carbazole-Decorated Cyclophosphazene as a Host with High Triplet Energy to Realize Efficient Delayed-Fluorescence OLEDs, Mater. Horiz. 2014, 1, 264-269., 2013.10.
217. CHIHAYA ADACHI, Multi-layered organic light-emitting diode fabrication using low molecular weight materials by electrospray method, THIN SOLID FILMS, 10.1016/j.tsf.2013.07.083, 545, 527-532, 2013.10.
218. CHIHAYA ADACHI, Systematic Conversion of Single Walled Carbon Nanotubes into n-type Thermoelectric Materials by Molecular Dopants, SCIENTIFIC REPORTS, 10.1038/srep03344(2013), 3, 2013.11.
219. CHIHAYA ADACHI, Plasma-tolerant structure for organic light-emitting diodes with aluminum cathodes fabricated by DC magnetron sputtering: Using a Li-doped electron transport layer, ORGANIC ELECTRONICS, 10.1016/j.orgel.2013.08.020, 14, 11, 2994-2999, 2013.11.
220. CHIHAYA ADACHI, Multi-color light-emitting transistors composed of organic single crystals, ORGANIC ELECTRONICS, 10.1016/j.orgel.2013.07.025, 14, 11, 2737-2742, 2013.11.
221. CHIHAYA ADACHI, Analysis of exciton annihilation in high-efficiency sky-blue organic light-emitting diodes with thermally activated delayed fluorescence, ORGANIC ELECTRONICS, 10.1016/j.orgel.2013.07.010, 14, 11, 2721-2726, 2013.11.
222. CHIHAYA ADACHI, An organic thin film photodiode as a portable photodetector for the detection of alkylphenol polyethoxylates by a flow fluorescence-immunoassay on magnetic microbeads in a microchannel, TALANTA, 10.1016/j.talanta.2013.08.044, 117, 139-145, 2013.12.
223. CHIHAYA ADACHI, Mixing Effect of Gold and Silver Nanoparticles on Enhancement in Performance of Organic Thin-Film Solar Cells, JAPANESE JOURNAL OF APPLIED PHYSICS, 10.7567/JJAP.52.122301, 52, 12, 2013.12.
224. CHIHAYA ADACHI, Formation of high-purity organic thin films by gas flow deposition and the effect of impurities on device characteristics, DISPLAYS, 10.1016/j.displa.2013.08.008, 34, 5, 418-422, 2013.12.
225. CHIHAYA ADACHI, 100 m-Order Patterning of Organic Semiconductor Layers Using a Thermally Converted Precursor Technique and its Application to Organic Light Emitting Diodes, ADVANCED OPTICAL MATERIALS, 10.1002/adom.201300372, 2, 2, 110-114, 2014.02.