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2017 Fiscal Year Final Research Report

Quest for Fundamental Principles in Photoinduced Charge Separation and Their Application

Research Project

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Project/Area Number 25220801
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Organic chemistry
Research InstitutionKyoto University

Principal Investigator

IMAHORI Hiroshi  京都大学, 工学研究科, 教授 (90243261)

Co-Investigator(Kenkyū-buntansha) 梅山 有和  京都大学, 工学研究科, 准教授 (30378806)
高野 勇太  北海道大学, 電子科学研究所, 准教授 (60580115)
村上 達也  富山県立大学, 工学部, 教授 (90410737)
Project Period (FY) 2013-05-31 – 2018-03-31
Keywords光電荷分離 / 色素増感太陽電池 / 有機薄膜太陽電池 / ポルフィリン / フラーレン / カーボンナノチューブ / グラフェン / 膜電位
Outline of Final Research Achievements

Our comprehensive researches revealed that the linker structures in the porphyrin-nanocarbon covalent composites have a large impact on their optical and photophysical properties. Specifically, moderate length-spacers between donor and acceptor were found to be essential to produce a long-lived charge-separated state efficiently. Fast decay of photoinduced charge-transfer states (i.e., exciplex state) to the ground state was observed in not only simple donor-acceptor linked systems, but also more complex dye-semiconducting electrode interface for dye-sensitized solar cells and donor-acceptor mixed interface for organic thin film solar cells. Integrated views and interpretation on the undesirable unique phenomena have been developed to give us a universal guideline on efficient photoinduced charge separation.

Free Research Field

有機化学、光化学

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Published: 2019-03-29  

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