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 Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); Welch Foundation; Louis Owen Foundation; Rice Univ. School of Engineering
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1015945
- Report Number(s):
- ANL/CNM/JA-68807; TRN: US201112%%79
- Journal Information:
- J. Phys. Chem. C, Vol. 115, Issue 18 ; May 12, 2011
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Molecular origin of photovoltaic performance in donor-block-acceptor all-conjugated block copolymers
Polythiophene-block-polyfluorene and Polythiophene-blockpoly(fluorene-co-benzothiadiazole): Insights into the Self-Assembly of All-Conjugated Block Copolymers