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Title:
Benzodithiophene-based two-dimensional polymers with extended conjugated thienyltriphenylamine substituents for high-efficiency polymer solar cells
Author: Fan, Qunping1; Liu, Yu1; Yang, Pingao1; Su, Wenyan1; Xiao, Manjun1; Chen, Jianhua1; Li, Min1; Wang, Xiangdong1; Wang, Yafei1; Tan, Hua1; Yang RenQiang(阳仁强)2; Zhu, Weiguo1
Source: ORGANIC ELECTRONICS
Issued Date: 2015-08-01
Volume: 23, Pages:124-132
Keyword: Benzo[1,2-b: 4,5-b ']dithiophene ; Extended conjugated side chain ; Two-dimensional ; Thienyltriphenylamine ; Polymer solar cells
DOI: 10.1016/j.orgel.2015.04.013
DOC Type: Article
English Abstract: Two novel donor-acceptor (D-A)-type two-dimensional (2-D) polymers of PTTPABDT-DTBT and PTTPABDT-DFDTBT were synthesized and characterized, in which extended conjugated side chained 4-thienyltriphenylamine benzo[1,2-b: 4,5-b'] dithiophene (TTPABDT) as the donor unit, thiophene (T) as the p-bridge, benzo[c][1,2,5] thiadiazole (BT) and 5,6-difluorobenzo[c][1,2,5] thiadiazole (DFBT) as the acceptor units. Due to the introduction of the extended conjugated side chained TTPA, polymers exhibited good thermal stabilities, broad absorption spectra and narrow optical band gaps. The hole mobility of 2.15 x 10(-4) cm(2) V-1 s(-1) was obtained in the PTTPABDT-DFDTBT/PC71BM blended film, which is two times higher than that of the PTTPABDT-DTBT/PC71BM blended film. Finally, the PTTPABDT-DFDTBT/PC71BM-based polymer solar cells presented the best power conversion efficiency (PCE) of 4.29% with a fill factor (FF) of 62.5%, while PTTPABDT-DTBT-based devices shown a PCE of 3.92% with a FF of 58.8%. The results indicate that the introduction of the extended conjugated TTPA side chain into the D-A-type 2-D polymers is an efficient approach to improve photovoltaic performances for its resulting polymers. (C) 2015 Elsevier B.V. All rights reserved.
WOS Headings: Science & Technology ; Technology ; Physical Sciences
WOS Subject: Materials Science, Multidisciplinary ; Physics, Applied
WOS Subject Extended: Materials Science ; Physics
WOS Keyword Plus: POWER CONVERSION EFFICIENCY ; PHOTOVOLTAIC PERFORMANCE ; FLUORINATED BENZOTHIADIAZOLE ; SEMICONDUCTING POLYMERS ; MOLECULAR DESIGN ; COPOLYMERS ; LEVEL ; 1,2-B4,5-B' ; BITHIENYL ; IMPROVE
Indexed Type: SCI
Language: 英语
WOS ID: WOS:000354575700019
Citation statistics:
Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/6485
Appears in Collections:先进有机功能材料团队_期刊论文

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description.institution: 1.Xiangtan Univ, Coll Chem, Key Lab Environm Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China

Recommended Citation:
Fan, Qunping,Liu, Yu,Yang, Pingao,et al. Benzodithiophene-based two-dimensional polymers with extended conjugated thienyltriphenylamine substituents for high-efficiency polymer solar cells[J]. ORGANIC ELECTRONICS,2015,23:124-132.
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