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题名: Improving the Photovoltaic Performance of Polymer Solar Cells Based on Furan-Flanked Diketopyrrolopyrrole Copolymers via Tuning the Alkyl Side Chain
作者: Zhou, Weilong1; Yu, Chengzhuo1; Chen, Huajie2; Jia, Tao1; Zhang, Weifeng2; Yu, Gui2; Li, Fenghong1
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2016-03-10
卷: 120, 期:9, 页:4824-4832
收录类别: SCI
英文摘要: Two furan-flanked diketopyrrolopyrrole copolymers, poly(3,6-difuran-2-yl-2,5-di(alkyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-altthienylenevinylene) with different alkyl side chains (PDVFs), have been synthesized and applied as a donor in polymer solar cells (PSCs). The PSC based on a blend of PDVF-8 with 2-octyldodecyl and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as an active layer has shown a better device performance than the PSC based on a blend of PDVF-10 with 2-decyltetradecyl and PC71BM. Tuning the alkyl side chains attached on the PDVFs leads to an increase of power conversion efficiency from 3.57% (PDVF-10) to 4.56% (PDVF-8) due to enhancements of short circuit current and fill factor. The effect of different alkyl side chains on the phase separation of the PDVF/PC71BM thin film has been investigated by using atomic force microscopy, transmission electron microscopy, and X-ray photoemission spectroscopy depth profiling in details. Furthermore, impedance spectroscopy was used to analyze the relationship between the phase separation of the PDVF/PC71BM blend films and the PSCs performance.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35908
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Jilin Univ, Inst Theoret Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China
2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
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