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Title:
Strain-released method to enhance the photovoltaic performance in solution-processed organic solar cells
Author: Zhi, Ying1; Xu, Yanzi1; Bao, Xichang3; Yang, Renqiang3; Zhu, Weiguo2; Dang, Dongfeng1; Meng, Lingjie1; Cao, Ruijun1
Source: DYES AND PIGMENTS
Issued Date: 2017-10-01
Volume: 145, Pages:263-269
Keyword: Organic solar cells ; Steric-strain release ; Molecular co-planarity ; Fused thiophene rings ; Electron donor-acceptor
DOI: 10.1016/j.dyepig.2017.06.019
DOC Type: Article
English Abstract: To release the steric-strain in largely fused molecular backbone and achieve the much planar molecules for efficient organic solar cells, a facile method was proposed by dividing the rigidly fused dibenzo-sexithiophene (DBST) units in FT3 with large molecular skeletons to two smaller building blocks to construct the electron donor-acceptor type compound FT4. As observed, much improved molecular co-planarity was achieved for FT4 in contrast to that of FT3, then leading to the higher charge carrier mobilities up to 6.7 x 10(-4) cm(2)V(-1)s(-1) by SCLC method. Meanwhile, FT4-based BHJ solar cells also exhibited much enhanced photovoltaic performance with the maximum PCE value of 3.07% and higher Jsc value of 8.23 mA/cm(2), which is only 2.13% and 5.67 mA/cm(2) for FT3-based solar cells. The results here indicated that the strain-released method, especially in the highly fused molecules, is beneficial to further improve their co-planarity, then leading to the high charge carrier mobilities and much enhanced photovoltaic performance in solar cells. (C) 2017 Elsevier Ltd. All rights reserved.
WOS Headings: Science & Technology ; Physical Sciences ; Technology
WOS Subject: Chemistry, Applied ; Engineering, Chemical ; Materials Science, Textiles
WOS Subject Extended: Chemistry ; Engineering ; Materials Science
WOS Keyword Plus: FIELD-EFFECT TRANSISTORS ; CONJUGATED POLYMERS ; MOLECULAR DESIGN ; BENZODITHIOPHENE ; COPOLYMERS ; EFFICIENCY ; SERIES ; UNIT
Indexed Type: SCI
Funder: National Natural Science Foundation of China(51603165) ; Foundation of Xi'an Jiao Tong University for New Teachers(HX1K008) ; China Post-doctoral Science Foundation Funded Project(2015M582648 ; Fundamental Research Funds for the Central Universities of China(xjj2016069) ; Natural Science Basic Research Plan in Shaanxi Province of China(2016JQ5029) ; Postdoctoral Project in Shaanxi Province ; 2016790901)
Language: 英语
WOS ID: WOS:000405972900030
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Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/9613
Appears in Collections:先进有机功能材料团队_期刊论文

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description.institution: 1.Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Shaanxi, Peoples R China
2.Changzhou Univ, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China
3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China

Recommended Citation:
Zhi, Ying,Xu, Yanzi,Bao, Xichang,et al. Strain-released method to enhance the photovoltaic performance in solution-processed organic solar cells[J]. DYES AND PIGMENTS,2017,145:263-269.
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