Multiple Exciton Generation and Recombination in Semiconductor Nanomaterial

2014 Fiscal Year Final Research Report

• Project/Area Number: 24750016
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: Kyoto University
• Principal Investigator: KIM Hyeon-Deuk 京都大学, 理学(系)研究科(研究院), 助教 (30378533)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 光励起ダイナミクス / ナノマテリアル / 量子凝縮系 / 非平衡現象

Outline of Final Research Achievements

I computationally investigated and elucidated photoexcited dynamics of electron, hole and exciton appearing in nano materials and nano complexes taking into account electron-phonon couplings. I also suggested some principles to drastically increase photovoltaic efficiency using nano materials and nano complexes. Especially, I computationally specified the origin of the anomalous temperature dependence of multiple exciton generation/recombination and found the mechanism of the ultrafast electron transfer appearing in the nano complex by developing the new time-domain ab initio molecular dynamics method.

Free Research Field

ナノサイエンス、計算科学