研究者情報 | 神奈川大学

イワクラ　イズミ Iwakura Izumi 岩倉　いずみ所属神奈川大学化学生命学部応用化学科神奈川大学大学院工学研究科工学専攻（応用化学領域）職種教授
言語種別	英語
発行・発表の年月	2010/09
形態種別	学術雑誌
査読	査読あり
標題	Ultrafast relaxation dynamics of photoexcitations in poly(3-hexylthiophene) for the determination of the defect concentration.
執筆形態	共著
掲載誌名	Chemical Physics Letters
掲載区分	国外
出版社・発行元	ELSEVIER
巻・号・頁	498(1-3),pp.71-76
国際共著	国際共著
著者・共著者	Yu Hsien Lee, Atsushi Yabushita, Chain Shu Hsu, Sheng Hsiung Yang, Izumi Iwakura, Chih Wei Luo, Kaung Hsiung Wu, Takayoshi Kobayashi
概要	Ultrafast pump-probe spectroscopy of poly(3-hexylthiophene) (P3HT) films was performed using a 9-fs laser and a broadband lock-in detection system. The fast geometrical relaxation (GR) time was attributed to the transition from a free exciton (FE) to form a bound polaron pair (BPP), and the time constant was estimated to be τGR = 90 fs. The relaxation time constant of BPP was determined as τBPP = 710 fs. The measurement of pump-power dependence enabled us to distinguish the defect trapping process of BPPs from other parallel decay processes and to determine the defect concentration of a P3HT thin film.
DOI	https://doi.org/10.1016/j.cplett.2010.08.036
researchmap用URL	https://www.sciencedirect.com/science/article/pii/S0009261410011255