Side-Chain Engineering of Benzodithiophene-Fluorinated Quinoxaline Low-Band-Gap Co-polymers for High-Performance Polymer Solar Cells
文献类型：会议论文
| 作者 | Xu, Xiaopeng; Wu, Yulei; Fang, Junfeng; Li, Zuojia; Wang, Zhenguo; Li, Ying; Peng, Qiang |
| 出版日期 | 2014 |
| 关键词 | OPEN-CIRCUIT VOLTAGE POWER CONVERSION EFFICIENCY PHOTOVOLTAIC PROPERTIES CONJUGATED POLYMERS SEMICONDUCTING POLYMERS DIELECTRIC-CONSTANT TANDEM MOBILITY ELECTRON HOLE |
| 卷号 | 20 |
| 期号 | 41 |
| DOI | 10.1002/chem.201403153 |
| 英文摘要 | A new series of donor acceptor co-polymers based on benzodithiophene and quinoxaline with various side chains have been developed for polymer solar cells. The effect of the degree of branching and dimensionality of the side chains were systematically investigated on the thermal stability, optical absorption, energy levels, molecular packing, and photovoltaic performance of the resulting co-polymers. The results indicated that the linear and 2D conjugated side chains improved the thermal stabilities and optical absorptions. The introduction of alkylthienyl side chains could efficiently lower the energy levels compared with the alkoxylsubstituted analogues, and the branched alkoxyl side chains could deepen the HOMO levels relative to the linear alkoxyl chains. The branched alkoxyl groups induced better lamellar-like ordering, but poorer face-to-face packing behavior. The 2D conjugated side chains had a negative influence on the crystalline properties of the co-polymers. The performance of the devices indicated that the branched alkoxyl side chains improved the Vo but decreased the J. and fill factor (FE). However, the 2D conjugated side chains would increase the Vo J, and FE simultaneously. For the first time, our work provides insight into molecular design strategies through side-chain engineering to achieve efficient polymer solar cells by considering both the degree of branching and dimensionality. |
| 学科主题 | Chemistry |
| ISSN号 | 0947-6539 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/23556]  |
| 专题 | 会议专题 会议专题_会议论文 |
| 推荐引用方式 GB/T 7714 | Xu, Xiaopeng,Wu, Yulei,Fang, Junfeng,et al. Side-Chain Engineering of Benzodithiophene-Fluorinated Quinoxaline Low-Band-Gap Co-polymers for High-Performance Polymer Solar Cells[C]. 见:. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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