Abstract
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.
Original language | English (US) |
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Pages (from-to) | 838-843 |
Number of pages | 6 |
Journal | Advanced Materials |
Volume | 25 |
Issue number | 6 |
DOIs | |
State | Published - Feb 13 2013 |
Keywords
- acene
- bulk heterojunctions
- polymer solar cells
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- General Materials Science