Optoelectronic properties and charge transfer in donor-acceptor all-conjugated diblock copolymers.
- Center for Nanoscale Materials
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.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; Welch Foundation; Louis Owen Foundation; Rice Univ. School of Engineering
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1015945
- Report Number(s):
- ANL/CNM/JA-68807
- Journal Information:
- J. Phys. Chem. C, Journal Name: J. Phys. Chem. C Journal Issue: 18 ; May 12, 2011 Vol. 115; ISSN 1932-7447
- Country of Publication:
- United States
- Language:
- ENGLISH
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