ICCAS OpenIR  > 分子纳米结构与纳米技术实验室
Single-Junction Binary-Blend Nonfullerene Polymer Solar Cells with 12.1% Efficiency
Zhao, Fuwen1,2; Dai, Shuixing1,3; Wu, Yang4; Zhang, Qianqian5; Wang, Jiayu1; Jiang, Li2; Ling, Qidan3; Wei, Zhixiang6; Ma, Wei4; You, Wei5; Wang, Chunru2; Zhan, Xiaowei1
2017-05-10
Source PublicationADVANCED MATERIALS
Volume29Issue:18
AbstractA new fluorinated nonfullerene acceptor, ITIC-Th1, has been designed and synthesized by introducing fluorine (F) atoms onto the end-capping group 1,1-dicyanomethylene-3-indanone (IC). On the one hand, incorporation of F would improve intramolecular interaction, enhance the push-pull effect between the donor unit indacenodithieno[3,2-b] thiophene and the acceptor unit IC due to electron-withdrawing effect of F, and finally adjust energy levels and reduce bandgap, which is beneficial to light harvesting and enhancing short-circuit current density (JSC). On the other hand, incorporation of F would improve intermolecular interactions through C. F center dot center dot center dot S, C. F center dot center dot center dot H, and C. F center dot center dot center dot pi noncovalent interactions and enhance electron mobility, which is beneficial to enhancing JSC and fill factor. Indeed, the results show that fluorinated ITIC-Th1 exhibits redshifted absorption, smaller optical bandgap, and higher electron mobility than the nonfluorinated ITIC-Th. Furthermore, nonfullerene organic solar cells (OSCs) based on fluorinated ITIC-Th1 electron acceptor and a wide-bandgap polymer donor FTAZ based on benzodithiophene and benzotriazole exhibit power conversion efficiency (PCE) as high as 12.1%, significantly higher than that of nonfluorinated ITIC-Th (8.88%). The PCE of 12.1% is the highest in fullerene and nonfullerene-based single-junction binary-blend OSCs. Moreover, the OSCs based on FTAZ: ITIC-Th1 show much better efficiency and better stability than the control devices based on FTAZ: PC71BM (PCE = 5.22%).
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/39042
Collection分子纳米结构与纳米技术实验室
Affiliation1.Peking Univ, Minist Educ, Key Lab Polymer Chem & Phys, Dept Mat Sci & Engn,Coll Engn, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
3.Fujian Normal Univ, Coll Mat Sci & Engn, Fujian Key Lab Polymer Mat, Fuzhou 350007, Peoples R China
4.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
5.Univ North Carolina Chapel Hill, Dept Chem, Chapel Hill, NC 27599 USA
6.Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Fuwen,Dai, Shuixing,Wu, Yang,et al. Single-Junction Binary-Blend Nonfullerene Polymer Solar Cells with 12.1% Efficiency[J]. ADVANCED MATERIALS,2017,29(18).
APA Zhao, Fuwen.,Dai, Shuixing.,Wu, Yang.,Zhang, Qianqian.,Wang, Jiayu.,...&Zhan, Xiaowei.(2017).Single-Junction Binary-Blend Nonfullerene Polymer Solar Cells with 12.1% Efficiency.ADVANCED MATERIALS,29(18).
MLA Zhao, Fuwen,et al."Single-Junction Binary-Blend Nonfullerene Polymer Solar Cells with 12.1% Efficiency".ADVANCED MATERIALS 29.18(2017).
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