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- Title
Isothianaphthene-Based Conjugated Polymers for Organic Photovoltaic Cells.
- Authors
Long, Guankui; Wan, Xiangjian; Zhou, Jiaoyan; Liu, Yongsheng; Li, Zhi; He, Guangrui; Zhang, Mingtao; Hou, Yanhui; Chen, Yongsheng
- Abstract
Two novel copolymers PBDT-DEAITN and PBDT-DOAITN containing the same backbone of isothianaphthene (ITN) quinoidal and benzodithiophene (BDT) donor units are synthesized and their organic photovoltaic (OPV) devices are fabricated. Although these two polymers have rather low optical bandgaps, 1.52 and 1.58 eV for PBDT-DEAITN and PBDT-DOAITN, respectively, their OPV cells exhibit rather limited power conversion efficiencies of 1.25% and 1.20% under an AM1.5G simulated solar light. The reasons for the low OPV performance are investigated by structure modeling calculation. Based on this and the screening results for the representative quinoidal polymers in the literatures, a strategy of designing high- performance planar polymers based on ITN unit is proposed.
- Publication
Macromolecular Chemistry & Physics, 2012, Vol 213, Issue 15, p1596
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201200142