Journal
ADVANCED MATERIALS
Volume 25, Issue 6, Pages 838-843Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201204238
Keywords
polymer solar cells; bulk heterojunctions; acene
Categories
Funding
- NSF [DMR-1004195]
- AFOSR [FA9550-12-1-0061]
- NSF-MRSEC (the University of Chicago) [DMR-0820054]
- Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001059]
- University of Chicago-Argonne Strategic Collaborative Initiative
- Argonne Director's Postdoctoral Fellowship
- Center for Nanoscale Materials, a U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences User Facility [DE-AC02-06CH11357]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [820054, 1004195] Funding Source: National Science Foundation
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Conjugated polymers based on a heteroacene, 3,7-dialkyl-dithieno[2,3-d:2',3'-d']benzo[1,2-b:4,5-b']dithiophene (DBD), are synthesized. These polymers show broad UV-vis absorption with energy bandgaps below 1.7 eV. PTDBD2, showing good miscibility in a polymer/phenyl-C71-butyric acid methyl ester (PC71BM) blend film, achieves a power conversion efficiency (PCE) of 7.6%. The results indicate that copolymers containing DBD are promising candidates for high-performance organic solar cells.
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