Dithienocarbazole- and benzothiadiazole-based donor-acceptor conjugated polymers for bulk heterojunction polymer solar cells

doi:10.1007/s11426-014-5221-9

CORC > 化学研究所 > 中国科学院化学研究所

	Dithienocarbazole- and benzothiadiazole-based donor-acceptor conjugated polymers for bulk heterojunction polymer solar cells
	Rong, Ziqing 1,2; Deng, Yunfeng 1,2; Xie, Zhiyuan 1; Geng, Yanhou 1; Wang, Fosong 1
刊名	SCIENCE CHINA-CHEMISTRY
	2015-02-01
卷号	58 期号:2 页码:294-300
关键词	Conjugated Polymer Dithienocarbazole Benzothiadiazole Polymer Solar Cells Power Conversion Efficiency
ISSN号	1674-7291
DOI	10.1007/s11426-014-5221-9
英文摘要	Donor-acceptor (D-A)-conjugated polymers P(BT-C1) and P(BT-C2), with dithieno[2,3-b;7,6-b]carbazole (C1) or dithieno[ 3,2-b;6,7-b]carbazole (C2) as D-unit and benzothiadiazole (BT) as A-unit, were synthesized. The optical bandgaps of the polymers are similar (1.84 and 1.88 eV, respectively). The structures of donor units noticeably influence the energy levels and backbone curvature of the polymers. P(BT-C1) shows a large backbone curvature; its highest occupied molecular orbital (HOMO) energy level is -5.18 eV, whereas P(BT-C2) displays a pseudo-straight backbone and has a HOMO energy level of -5.37 eV. The hole mobilities of the polymers without thermal annealing are 1.9x10(-3) and 2.7x10(-3) cm(2)V(-1)s(-1) for P(BT-C1) and P(BT-C2), respectively, as measured by organic thin-film transistors (OTFTs). Polymer solar cells using P(BT-C1) and P(BT-C2) as the donor and phenyl-C-71-butyric acid methyl ester (PC71BM) as the acceptor were fabricated. Power conversion efficiencies (PCEs) of 4.9% and 5.0% were achieved for P(BT-C1) and P(BT-C2), respectively. The devices based on P(BT-C2) exhibited a higher V (oc) due to the deeper HOMO level of the polymer, which led to a slightly higher PCE.
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000349001500015
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/53379]
专题	中国科学院化学研究所
通讯作者	Geng, Yanhou
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
推荐引用方式 GB/T 7714	Rong, Ziqing,Deng, Yunfeng,Xie, Zhiyuan,et al. Dithienocarbazole- and benzothiadiazole-based donor-acceptor conjugated polymers for bulk heterojunction polymer solar cells[J]. SCIENCE CHINA-CHEMISTRY,2015,58(2):294-300.
APA	Rong, Ziqing,Deng, Yunfeng,Xie, Zhiyuan,Geng, Yanhou,&Wang, Fosong.(2015).Dithienocarbazole- and benzothiadiazole-based donor-acceptor conjugated polymers for bulk heterojunction polymer solar cells.SCIENCE CHINA-CHEMISTRY,58(2),294-300.
MLA	Rong, Ziqing,et al."Dithienocarbazole- and benzothiadiazole-based donor-acceptor conjugated polymers for bulk heterojunction polymer solar cells".SCIENCE CHINA-CHEMISTRY 58.2(2015):294-300.