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Grain Boundary Modification via F4TCNQ To Reduce Defects of Perovskite Solar Cells with Excellent Device Performance

文献类型：期刊论文

作者Liu, Cong1,2; Huang, Zengqi1,2; Hu, Xiaotian3; Meng, Xiangchuan1,2; Huang, Liqiang1,2; Xiong, Jian4; Tan, Licheng1,2; Chen, Yiwang1,2
刊名ACS APPLIED MATERIALS & INTERFACES
出版日期2018-01-17
卷号10期号:2页码:1909-1916
ISSN号1944-8244
关键词Grain Boundaries Defects Perovskite Solar Cells Charge Transfer Bulk Heterojunction Fill Factor
DOI10.1021/acsami.7b15031
英文摘要Solar cells based on hybrid organic inorganic metal halide perovskites are being developed to achieve high efficiency and stability. However, inevitably, there are defects in perovskite films, leading to poor device performance. Here, we employ an additive-engineering strategy to modify the grain boundary (GB) defects and crystal lattice defects by introducing a strong electron acceptor Of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquiriodimethane (F4TCNQ) into perovskite functional layer. Importantly, it has been found that F4TCNQ is filled in GBs and there is a significant reduction of metallic lead defects and iodide vacancies in the perovskite crystal lattice. The bulk heterojunction perovskite-F4TCNQ film exhibits superior electronic quality with improved charge separation and transfer, enhanced and balanced charge mobility, as well as suppressed recombination. As a result, the F4TCNQ doped perovskite device shows excellent device performance, especially the reproducible high fill factor (up to 80%) and negligible hysteresis effect.
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000423140400050
源URL[http://ir.iccas.ac.cn/handle/121111/45487]  
专题中国科学院化学研究所
通讯作者Tan, Licheng; Chen, Yiwang
作者单位1.Nanchang Univ, Coll Chem, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China
2.Nanchang Univ, Jiangxi Prov Key Lab New Energy Chem, Inst Polymers, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China
3.Chinese Acad Sci ICCAS, Inst Chem, Key Lab Green Printing, 2 Zhongguancun Beiyi St, Beijing 100190, Peoples R China
4.Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guangxi Key Lab Informat Mat, 1 Jinji Rd, Guilin 541004, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Cong,Huang, Zengqi,Hu, Xiaotian,et al. Grain Boundary Modification via F4TCNQ To Reduce Defects of Perovskite Solar Cells with Excellent Device Performance[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(2):1909-1916.
APA Liu, Cong.,Huang, Zengqi.,Hu, Xiaotian.,Meng, Xiangchuan.,Huang, Liqiang.,...&Chen, Yiwang.(2018).Grain Boundary Modification via F4TCNQ To Reduce Defects of Perovskite Solar Cells with Excellent Device Performance.ACS APPLIED MATERIALS & INTERFACES,10(2),1909-1916.
MLA Liu, Cong,et al."Grain Boundary Modification via F4TCNQ To Reduce Defects of Perovskite Solar Cells with Excellent Device Performance".ACS APPLIED MATERIALS & INTERFACES 10.2(2018):1909-1916.

入库方式： OAI收割

来源：化学研究所

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