Electron donor and acceptor spatial distribution in structured bulk heterojunction photovoltaic devices induced by periodic photopolymerization |
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Authors: | Watanabe Satoshi Fukuchi Yasumasa Fukasawa Masako Sassa Takafumi Uchiyama Masanobu Yamashita Takashi Matsumoto Mutsuyoshi Aoyama Tetsuya |
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Affiliation: | Department of Materials Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan. watasato@rs.noda.tus.ac.jp |
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Abstract: | Donor and acceptor spatial distributions were directly formed in a surface relief grating of structured bulk heterojunction (BHJ) photovoltaic devices by simple periodic photopolymerization. Enhanced photocurrents were observed in the structured BHJ photovoltaic devices and formation of the D/A spatial distribution was confirmed by Kelvin probe force microscopy. This technique enables the fabrication of structured BHJ photovoltaic devices with solution-processable organic semiconductors, and has tremendous potential for controlling D/A spatial distribution in organic optoelectronics devices. |
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