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题名: Influence of Thiophene Moiety on the Excited State Properties of Push-Pull Chromophores
作者: Li, Yang1; Hu, Jiangpu1; He, Guiying1; Zhu, Huaning1; Wang, Xian1; Guo, Qianjin1; Xia, Andong1; Lin, Yuze2; Wang, Jiayu2; Zhan, Xiaowei2
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2016-07-07
卷: 120, 期:26, 页:13922-13930
收录类别: SCI
英文摘要: The magnitude of intramolecular charge-transfer (ICT) in push-pull chromophores and the fraction of delocalized excitation in multibranched chromophores and conjugated polymers play a crucial role in high photovoltaic efficiency of a solar cell. In this work, we present a joint theoretical and experimental study aimed to understand the influence of thiophene moiety on photophysical properties of push-pull chromophores for solar cell application. It is found that insertion of a thiophene moiety as the conjugated bridge enhances the magnitude of ICT in push-pull chromophores due to the inductive effect of the thiophene moiety. In addition, introduction of a thiophene moiety as the conjugated side chain significantly increases transition dipole moment of the chromophore, and as a consequence, interchromophoric coupling is enhanced, giving rise to a larger fraction of delocalized excitation within multibranched chromophores. The results presented here show that introduction of a thiophene moiety in push-pull chromophores contributes to the improvement of the photophysical properties necessary for highly efficient solar cell performance.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35176
Appears in Collections:光化学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Key Lab Photochem, BNLMS, Beijing 100190, Peoples R China
2.Peking Univ, Key Lab Polymer Chem & Phys, Minist Educ, Dept Mat Sci & Engn,Coll Engn, Beijing 100871, Peoples R China
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