Low bandgap conjugated polymers based on mono-fluorinated isoindigo for efficient bulk heterojunction polymer solar cells processed with non-chlorinated solvents

doi:10.1039/c4ee02362e

CORC > 化学研究所 > 中国科学院化学研究所

	Low bandgap conjugated polymers based on mono-fluorinated isoindigo for efficient bulk heterojunction polymer solar cells processed with non-chlorinated solvents
	Deng, Yunfeng 1,2; Li, Weili 1; Liu, Lihui 1,2; Tian, Hongkun 1; Xie, Zhiyuan 1; Geng, Yanhou 1; Wang, Fosong 1
刊名	ENERGY & ENVIRONMENTAL SCIENCE
	2015
卷号	8 期号:2 页码:585-591
ISSN号	1754-5692
DOI	10.1039/c4ee02362e
英文摘要	Three low bandgap conjugated polymers based on 7-fluorinated isoindigo (IID1F) and dithieno[3,2-b;6,7-b]carbazole (DTC), i.e., poly[N-dodecyldithieno[3,2-b;6,7-b]carbazole-alt-7-fluoro-N,N-di(2-octyldodecyl)isoindigo] (P1), poly[N-dodecyldithieno[3,2-b;6,7-b] carbazole-alt-7-fluoro-N,N-di(3-octyltridecyl)isoindigo] (P2) and poly[N-dodecyldithieno[3,2-b;6,7-b] carbazole-alt-7-fluoro-N,N-di(4-octyltetradecyl)isoindigo] (P3), were synthesized. All three polymers are soluble in non-chlorinated solvent o-xylene owing to regio-random distribution of F-atoms along the conjugated backbone. The position of the alkyl-branching point has a negligible influence on energy levels and absorption spectra of the polymers, but has a small effect on their charge transport properties. Bulk heterojunction (BHJ) polymer solar cells (PSCs) of the polymers were fabricated with phenyl-C-61-butyric acid methyl ester (PC61BM) as an electron acceptor. When o-xylene was used as a solvent, all three polymers delivered power conversion efficiencies (PCEs) above 7%. P2 exhibited the best device performance with a PCE of 7.5%. The devices processed with o-xylene showed higher device efficiency than those fabricated with o-dichlorobenzene (o-DCB) since the films of polymer: PC61BM blends prepared with o-xylene exhibited better morphology and higher and more balanced charge-carrier mobilities, leading to less recombination loss and higher fill factor (FF).
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000349616900017
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/53407]
专题	中国科学院化学研究所
通讯作者	Deng, Yunfeng
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 100039, Peoples R China
推荐引用方式 GB/T 7714	Deng, Yunfeng,Li, Weili,Liu, Lihui,et al. Low bandgap conjugated polymers based on mono-fluorinated isoindigo for efficient bulk heterojunction polymer solar cells processed with non-chlorinated solvents[J]. ENERGY & ENVIRONMENTAL SCIENCE,2015,8(2):585-591.
APA	Deng, Yunfeng.,Li, Weili.,Liu, Lihui.,Tian, Hongkun.,Xie, Zhiyuan.,...&Wang, Fosong.(2015).Low bandgap conjugated polymers based on mono-fluorinated isoindigo for efficient bulk heterojunction polymer solar cells processed with non-chlorinated solvents.ENERGY & ENVIRONMENTAL SCIENCE,8(2),585-591.
MLA	Deng, Yunfeng,et al."Low bandgap conjugated polymers based on mono-fluorinated isoindigo for efficient bulk heterojunction polymer solar cells processed with non-chlorinated solvents".ENERGY & ENVIRONMENTAL SCIENCE 8.2(2015):585-591.