Optoelectronic Properties and Charge Transfer in Donor鈥揂cceptor All-Conjugated Diblock Copolymers

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• 作者：Ioan Botiz ; Richard D. Schaller ; Rafael Verduzco ; Seth B. Darling
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：May 12, 2011
• 年：2011
• 卷：115
• 期：18
• 页码：9260-9266
• 全文大小：928K
• 年卷期：v.115,no.18(May 12, 2011)
• ISSN：1932-7455

文摘

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鈥揹onor and electron鈥揳cceptor 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.