Kyushu University Academic Staff Educational and Research Activities Database
Researcher information (To researchers) Need Help? How to update
Kiyoshi Miyata Last modified date:2020.06.22

Assistant Professor / Inorganic/Analytical Chemistry
Department of Chemistry
Faculty of Sciences


Graduate School
Undergraduate School


E-Mail *Since the e-mail address is not displayed in Internet Explorer, please use another web browser:Google Chrome, safari.
Homepage
https://kyushu-u.pure.elsevier.com/en/persons/kiyoshi-miyata
 Reseacher Profiling Tool Kyushu University Pure
Academic Degree
PhD of Science
Country of degree conferring institution (Overseas)
No
Field of Specialization
Physical Chemistry, Electron dynamics, Ultrafast spectroscopy
ORCID(Open Researcher and Contributor ID)
https://orcid.org/0000-0001-6748-1337
Total Priod of education and research career in the foreign country
02years10months
Outline Activities
I am interested in photo-carrier dynamics in organic solids or organic-inorganic semiconductors using ultrafast specroscopy.
Research
Research Interests
  • Elucidation of mechanisms of photoinduced chemical processes using metal complexes
    keyword : Artificial photosynthesis
    2019.04~2020.01.
  • Exciton dynamics in lanthanide metal/ions
    keyword : lanthanide
    2018.04.
  • Structural dynamics of thermally assisted delayed fluorescence molecules
    keyword : Thermally Assisted Delayed Fluorescence
    2018.02.
Academic Activities
Reports
1. Kiyoshi Miyata, Felisa S. Conrad-Burton, Florian L. Geyer, X.-Y. Zhu, Triplet Pair States in Singlet Fission, Chemical Reviews, 10.1021/acs.chemrev.8b00572, 2019.02, [URL], 一重項励起子分裂(シングレットフィッション)は励起された一重項励起子状態が二つのトリプレット状態に分裂する過程である。この過程にはいまだに理解されていない部分が多くあり、中でも中間状態であるトリプレット対状態はその重要性を大きく見過ごされていた。このレビューではトリプレット対状態の重要性にフォーカスし、現時点での理解を整理することで業界がこれから追求すべき方向性の一つを明確に提示している。.
Papers
1. Kiyoshi Miyata, Ryota Nagaoka, Masaki Hada, Takanori Tanaka, Ryuji Mishima, Taihei Kuroda, Sota Sueta, Takumi Iida, Yoshifumi Yamashita, Takeshi Nishikawa, Kenji Tsuruta, Yasuhiko Hayashi, Ken Onda, Toshihiko Kiwa, Takashi Teranishi, Liquid-like dielectric response is an origin of long polaron lifetime exceeding 10 μ s in lead bromide perovskites, The Journal of Chemical Physics, 10.1063/1.5127993, 152, 8, 084704, 2020.02.
2. , [URL].
3. Miyata, Kiyoshi; Zhu, X. -Y., Ferroelectric large polarons, NATURE MATERIALS, 10.1038/s41563-018-0068-7, 17, 5, 379-381, 2018.05, オプトエレクトロニクスで非常に重要な位置づけとなっている新規材料鉛ハライドペロブスカイトについて、その特異な電子物性を理解する鍵として強誘電材料としても側面を議論した論文。印加された電場に対して非常に大きく応答できる高誘電率といった性質から、注入されたキャリアが周囲に微視的な強誘電相転移を誘起する可能性について言及し、Ferroelectric polaronという全く新しい概念を提唱した。.
4. Miyata, Kiyoshi; Atallah, Timothy L.; Zhu, X. -Y., Lead halide perovskites: Crystal-liquid duality, phonon glass electron crystals, and large polaron formation, SCIENCE ADVANCES, 10.1126/sciadv.1701469, 3, 10, 2017.10.
5. Miyata, Kiyoshi; Kurashige, Yuki; Watanabe, Kazuya; Sugimoto, Toshiki; Takahashi, Shota; Tanaka, Shunsuke; Takeya, Jun; Yanai, Takeshi; Matsumoto, Yoshiyasu, Coherent singlet fission activated by symmetry breaking, NATURE CHEMISTRY, 10.1038/NCHEM.2784, 9, 10, 983-989, 2017.10.
6. Miyata, Kiyoshi; Meggiolaro, Daniele; Trinh, M. Tuan; Joshi, Prakriti P.; Mosconi, Edoardo; Jones, Skyler C.; De Angelis, Filippo; Zhu, X. -Y., Large polarons in lead halide perovskites, SCIENCE ADVANCES, 10.1126/sciadv.1701217, 3, 8, 2017.08.
7. Zhu, Haiming; Miyata, Kiyoshi; Fu, Yongping; Wang, Jue; Joshi, Prakriti P.; Niesner, Daniel; Williams, Kristopher W.; Jin, Song; Zhu, X. -Y., Screening in crystalline liquids protects energetic carriers in hybrid perovskites, SCIENCE, 10.1126/science.aaf9570, 353, 6306, 1409-1413, 2016.09.
8. Miyata, Kiyoshi; Tanaka, Shunsuke; Ishino, Yuuta; Watanabe, Kazuya; Uemura, Takafumi; Takeya, Jun; Sugimoto, Toshiki; Matsumoto, Yoshiyasu, Microscopic hole-transfer efficiency in organic thin-film transistors studied with charge-modulation spectroscopy, PHYSICAL REVIEW B, 10.1103/PhysRevB.91.195306, 91, 19, 2015.05.
Presentations
1. Kiyoshi Miyata, Ken Onda, Direct observation of ultrafast structural dynamics of emergent materials for optoelectronics, The 11th Asian Conference on Ultrafast Phenomena, 2020.01, [URL].
2. Kiyoshi Miyata, Masaki Saigo, Yuushi Shimoda, Hajime Nakanotani, Chihaya Adachi, Yuki Kurashige, Kazuya Watanabe, Yoshiyasu Matsumoto, Ken Onda, Real-time observation of concerted electron-phonon dynamics in organic materials for optoelectronics, CEMS topical meeting on Organic Photoelectronics, 2019.07, [URL].
3. Kiyoshi Miyata, Probing electron-phonon couplings in organic semiconductors using static/time-resolved spectroscopy, The 3rd symposium of Frontier of Organic Semiconductor Laser, 2019.01.
Membership in Academic Society
  • The Rare Earth Society of Japan
  • The Physical Society of Japan
  • The Material Research Society
  • The Chemical Society of Japan
  • Japan OLED Forum
  • The Japan Society of Applied Physics
  • The Spectroscopical Society of Japan
  • Japan Society for Molecular Science
Educational
Educational Activities
・Mentor of the students in the Spectrochemisty lab.
・Lecturer at Basic operation of Chemistry experiment