High open-circuit voltage polymer/polymer blend solar cells with a polyfluorene copolymer as the electron acceptor
文献类型：期刊论文
| 作者 | Yang, Qingqing1,2; Song, Haiyang1,2; Gao, Bingrong1,3; Wang, Yan3; Fu, Yingying1; Yang, Junwei1; Xie, Zhiyuan1; Wang, Lixiang1 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2014 |
| 卷号 | 4期号:24页码:12579-12585 |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c3ra47512c |
| 英文摘要 | Polymer/polymer blend solar cell with a high open-circuit voltage (V-OC) have been fabricated using a blend of poly(3-hexylthiophene) (P3HT) and poly[2,7-(9,9'-octyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-50,6'-bis(hexyloxy)-2',1',3'-benzothiadiazole)] (PFDTBT-OC6) as the active layer. The influence of thermal annealing on the early time excited state dynamics, the morphology of the P3HT: PFDTBT-OC6 blend films and the resulting photovoltaic performance have been investigated in detail. The thermally annealed P3HT: PFDTBT-OC6 blend solar cell demonstrates a power conversion efficiency of 1.80% with a V-OC of 1.36 V, much higher than the as-cast solar cell (0.02%). Transient absorption experiments disclosed that thermal annealing does not show a significant influence on the early time excited state dynamics of the P3HT: PFDTBT-OC6 blend. The severe geminate recombination of the charge pairs shortly after the charge transfer in the P3HT: PFDTBT-OC6 blend film still exists even if the blend film is subjected to thermal annealing, possibly due to the intrinsic donor/acceptor interfacial nature and the impure donor/acceptor phase separation. The enhanced photovoltaic performance after thermal annealing can be mainly attributed to the formation of interconnected networks of P3HT crystallites within the PFDTBT-OC6 matrix, which helps to improve the collection of photo-generated charges. The results implicate that restraining the dominant geminate recombination in the P3HT: PFDTBT-OC6 blend films is a key issue to boost the photovoltaic performance of polymer/polymer blend solar cells further. |
| 语种 | 英语 |
| WOS记录号 | WOS:000332473400064 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/50219]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Xie, Zhiyuan |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Qingqing,Song, Haiyang,Gao, Bingrong,et al. High open-circuit voltage polymer/polymer blend solar cells with a polyfluorene copolymer as the electron acceptor[J]. RSC ADVANCES,2014,4(24):12579-12585. |
| APA | Yang, Qingqing.,Song, Haiyang.,Gao, Bingrong.,Wang, Yan.,Fu, Yingying.,...&Wang, Lixiang.(2014).High open-circuit voltage polymer/polymer blend solar cells with a polyfluorene copolymer as the electron acceptor.RSC ADVANCES,4(24),12579-12585. |
| MLA | Yang, Qingqing,et al."High open-circuit voltage polymer/polymer blend solar cells with a polyfluorene copolymer as the electron acceptor".RSC ADVANCES 4.24(2014):12579-12585. |
入库方式： OAI收割
来源：化学研究所
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