Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 25, Pages 9638-9641Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja201131h
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Funding
- Natural Science Foundation of China [50990065, 51010003, 51073058, 20904011]
- Ministry of Science and Technology, China (MOST) [2009CB623601]
- Fundamental Research Funds for the Central Universities, South China University of Technology [2009220012]
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Donor acceptor conjugated polymers PBDT-DTBT and PBDT-DTNT, based on 2,1,3-benzothiadiazole (BT) and naphtho[1,2-c:5,6-dbis[1,2,5]thiadiazole (NT), have been designed and synthesized for polymer solar cells. NT contains two fused 1,2,5-thiadiazole rings that lower the band gap, enhance the interchain packing, and improve the charge mobility of the resulting polymer. Consequently, the NT-based polymer PBDT-DTNT exhibited considerably better photovoltaic performance with a power conversion efficiency (PCE) of 6.00% when compared with the BT-based polymer PBDT-DTBT, which gave a PCE of 2.11% under identical device configurations.
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