Electron donor and acceptor spatial distribution in structured bulk heterojunction photovoltaic devices induced by periodic photopolymerization.
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.
Department of Materials Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan. watasato@rs.noda.tus.ac.jp
Satoshi
S
Watanabe
Yasumasa
Y
Fukuchi
Masako
M
Fukasawa
Takafumi
T
Sassa
Masanobu
M
Uchiyama
Takashi
T
Yamashita
Mutsuyoshi
M
Matsumoto
Tetsuya
T
Aoyama
D002227:Carbazoles / Q000737:chemistry*; D004563:Electrochemistry / Q000295:instrumentation; D004566:Electrodes; D004583:Electrons; D037741:Fullerenes / Q000737:chemistry*; D015394:Molecular Structure; D055668:Photochemical Processes / Q000528:radiation effects*; D058105:Polymerization / Q000528:radiation effects*; D012666:Semiconductors / Q000295:instrumentation; D013499:Surface Properties; D017971:Tin Compounds / Q000737:chemistry
C539575:(6,6)-phenyl C61-butyric acid methyl ester; D002227:Carbazoles; D037741:Fullerenes; D017971:Tin Compounds; C109984:indium tin oxide