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Crystallinity dictates the selection of fullerene or non-fullerene acceptors in a small molecule organic solar cell

文献类型：期刊论文

作者Yu, Qingqing2,3; Xu, Jingjing1,2; Fu, Jiehao1,2; Xu, Tongle2,3; Yan, Xinhao2,3; Chen, Shanshan4; Chen, Haiyan1,2; Sun, Kuan4; Kan, Zhipeng1,2; Lu, Shirong1,2
刊名DYES AND PIGMENTS
出版日期2021-03-01
卷号187页码:6
关键词Organic solar cells Crystallinity Small molecule donor Photovoltaic performances Device fabrication
ISSN号0143-7208
DOI10.1016/j.dyepig.2020.109085
通讯作者Xu, Tongle(xutongle@cigit.ac.cn) ; Lu, Shirong(lushirong@cigit.ac.cn) ; Xiao, Zeyun(xiao.z@cigit.ac.cn)
英文摘要The side chains of a molecule affect the molecular packing and crystallinity which are crucial factors determining the photovoltaic properties in organic solar cells (OSCs). In this work, two small molecule donors, BDT(X1) and BDT(X2), with identical backbone and slightly different side chains on the end groups have been designed and synthesized. Compared with BDT(X1) with linear alkyl chain, BDT(X2) featuring a branched alkyl chain in the terminal groups has larger steric hindrance and exhibits weaker crystallinity and less compact molecule stacking. Application of the two small molecule donors in OSCs shows that BDT(X1) is more suitable for IDIC, a nonfullerene acceptor, while BDT(X2) demonstrates higher OSC performance when blended with fullerene acceptor PC71 BM. Morphology and grazing-incidence wide-angle X-ray scattering (GIWAXS) studies reveal that crystallinity plays a key role in determining the molecular packing and phase separation with fullerene/non-fullerene acceptors which in turn influence the charge transport and photovoltaic properties. Our results provide some guidance on selection of acceptors for a given donor and demonstrate the importance of fine tuning of the crystallinity in small molecule OSCs.
资助项目National Natural Science Foundation of China[22071238] ; National Youth Thousand Program Project[R52A199Z11] ; CAS Pioneer Hundred Talents Program B[Y92A010Q10] ; Natural Science Foundation of Chongqing[cstc2018jcyjAX0556] ; Venture & Innovation Support Program for Chongqing Overseas Returnees[cx2019028] ; Chongqing Talents Top Youth Talent Program[CQYC201905057]
WOS研究方向Chemistry ; Engineering ; Materials Science
语种英语
WOS记录号WOS:000618737900010
出版者ELSEVIER SCI LTD
源URL[http://119.78.100.138/handle/2HOD01W0/12964]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Xu, Tongle; Lu, Shirong; Xiao, Zeyun
作者单位1.Univ Chinese Acad Sci, Chongqing Sch, Chongqing 400714, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chongqing Univ, Sch Power Engn, Key Lab Low Grade Energy Utilizat Technol & Syst, Minist Educ, Chongqing 400044, Peoples R China
推荐引用方式
GB/T 7714		 Yu, Qingqing,Xu, Jingjing,Fu, Jiehao,et al. Crystallinity dictates the selection of fullerene or non-fullerene acceptors in a small molecule organic solar cell[J]. DYES AND PIGMENTS,2021,187:6.
APA Yu, Qingqing.,Xu, Jingjing.,Fu, Jiehao.,Xu, Tongle.,Yan, Xinhao.,...&Xiao, Zeyun.(2021).Crystallinity dictates the selection of fullerene or non-fullerene acceptors in a small molecule organic solar cell.DYES AND PIGMENTS,187,6.
MLA Yu, Qingqing,et al."Crystallinity dictates the selection of fullerene or non-fullerene acceptors in a small molecule organic solar cell".DYES AND PIGMENTS 187(2021):6.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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