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题名: The Importance of End Groups for Solution-Processed Small-Molecule Bulk-Heterojunction Photovoltaic Cells
作者: Duan, Ruomeng1; Cui, Yong2; Zhao, Yanfei1; Li, Chen1; Chen, Long1; Hou, Jianhui2; Wagner, Manfred1; Baumgarten, Martin1; He, Chang2; Muellen, Klaus1
关键词: benzodithiophene ; bulk heterojunction ; small molecule ; solar cells ; thienothiophene
刊名: CHEMSUSCHEM
发表日期: 2016-05-10
卷: 9, 期:9, 页:973-980
收录类别: SCI
英文摘要: End groups in small-molecule photovoltaic materials are important owing to their strong influence on molecular stability, solubility, energy levels, and aggregation behaviors. In this work, a series of donor-acceptor pentads (D-2-A-D-1-A-D-2) were designed and synthesized, aiming to investigate the effect of the end groups on the materials properties and photovoltaic device performance. These molecules share identical central A-D-1-A triads (with benzodithiophene as D-1 and 6-carbonyl-thieno[3,4-b]thiophene as A), but with various D-2 end groups composed of alkyl-substituted thiophene (T), thieno[3,2-b]thiophene (TT), and 2,2'-bithiophene (BT). The results indicate a relationship between conjugated segment/alkyl chain length of the end groups and the photovoltaic performance, which contributes to the evolving molecular design principles for high efficiency organic solar cells.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35542
Appears in Collections:高分子物理与化学实验室_期刊论文

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作者单位: 1.Max Planck Inst Polymer Res, Ackermannweg 10, D-55128 Mainz, Germany
2.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Zhongguancun North First St 2, Beijing 100190, Peoples R China
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