期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 115, 期 18, 页码 9260-9266出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp201344p
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资金
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- Welch Foundation [C-1750]
- Louis Owen Foundation
- Rice University School of Engineering
- Oak Ridge National Laboratory
- U.S. Department of Energy
All-conjugated block copolymers, which can self-assemble into well-ordered morphologies, provide exciting opportunities to rationally design and control the nanoscale organization of electron-donor and electron-acceptor moieties in optoelectronic active layers. Here we report on the steady-state and time-resolved optical characterization of block copolymer films and solutions containing poly(3-hexylthiophene) as the donor block and poly(9,9-dioctylfluorene) with and without copolymerization with benzothiadiazole as the acceptor block. Transient absorption measurements suggest rapid charge transfer occurs in both systems, with higher efficiency observed in the latter composition. These results indicate that this class of materials has promise in preparing highly ordered bulk heterojunction all-polymer organic photovoltaic devices.
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