Molecular Design and Application of a Photovoltaic Polymer with Improved Optical Properties and Molecular Energy Levels

	Molecular Design and Application of a Photovoltaic Polymer with Improved Optical Properties and Molecular Energy Levels
	Yao, Huifeng; Zhang, Hao; Ye, Long; Zhao, Wenchao; Zhang, Shaoqing; Hou, Jianhui
刊名	MACROMOLECULES
	2015-06-09
卷号	48 期号:11 页码:3493-3499
英文摘要	(E)-5-(2-(5-(Alkylthio)thiophen-2-yl)vinyl)thiophene-2-yl functional groups were introduced onto 4- and 8-positions of BDT units, and this building block was used to construct a new derivative polymer of PTB7, named as PBT-TVT. Benefiting from the prolonged conjugation of the conjugated side groups on BDT units, the optical absorption property of PBT-TVT can be improved greatly compared to that of PTB7, so an inspiring result of 7.67% was obtained by using PBT-TVT as the donor and PC61BM as the acceptor in polymer solar cells (PSCs), which is much higher than that of the PTB7:PC61BM-based device and also one of the highest results for PSCs with PC61BM. In electrochemical cyclic voltammetry (CV) measurements, PBT-TVT showed a deeper HOMO level than PTB7 so the device based on the former exhibits higher open circuit voltage than the latter. Moreover, in comparison with PTB7, the new polymer PBT-TVT exhibited stronger interchain pi-pi interaction and thus higher hole mobility. Overall, the results in this work indicated that PBT-TVT is a promising donor polymer, and the strategy used in this work will be beneficial for molecular design of polymer photovoltaic materials for large-scale production of PSCs.
收录类别	SCI
语种	英语
公开日期	2015-11-02
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27992]
专题	化学研究所_高分子物理与化学实验室
作者单位	Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yao, Huifeng,Zhang, Hao,Ye, Long,et al. Molecular Design and Application of a Photovoltaic Polymer with Improved Optical Properties and Molecular Energy Levels[J]. MACROMOLECULES,2015,48(11):3493-3499.
APA	Yao, Huifeng,Zhang, Hao,Ye, Long,Zhao, Wenchao,Zhang, Shaoqing,&Hou, Jianhui.(2015).Molecular Design and Application of a Photovoltaic Polymer with Improved Optical Properties and Molecular Energy Levels.MACROMOLECULES,48(11),3493-3499.
MLA	Yao, Huifeng,et al."Molecular Design and Application of a Photovoltaic Polymer with Improved Optical Properties and Molecular Energy Levels".MACROMOLECULES 48.11(2015):3493-3499.