Influence of N,N-Dimethylformamide Annealing on the Local Electrical Properties of Organometal Halide Perovskite Solar Cells: an Atomic Force Microscopy Investigation

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	Influence of N,N-Dimethylformamide Annealing on the Local Electrical Properties of Organometal Halide Perovskite Solar Cells: an Atomic Force Microscopy Investigation
	Li, Jiang-Jun 1,2; Ma, Jing-Yuan 1,2; Hu, Jin-Song 1; Wang, Dong 1; Wan, Li-Jun 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2016-10-05
卷号	8 期号:39 页码:26002-26007
关键词	perovskite solar cells solvent annealing GBs KPFM c-AFM
英文摘要	Organometal halide perovskites have been recognized as a new class of materials for photovoltaic application. Solvent annealing introduced during crystallization of bulk or thin-film materials can improve the performance of perovskite solar cells. Herein, we present Kelvin probe force microscopy and conductive atomic force microscopy (c-AFM) measurements to investigate the local optoelectronic properties of a perovskite film after N,N-dimethylformamide (DMF) annealing. AFM results show that DMF annealing induces recrystallization, yielding a large-size polycrystalline perovskite film. Uniform and higher photocurrent is distributed on the film. However, lower surface potential enhancement and photocurrent are observed at grain boundaries (GBs), illustrating that GBs acting as recombination sites are detrimental to photocurrent transport and collection. Our observation provides a nanoscale understanding of the device performance improvement after DMF annealing.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35662]
专题	化学研究所_分子纳米结构与纳米技术实验室
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Jiang-Jun,Ma, Jing-Yuan,Hu, Jin-Song,et al. Influence of N,N-Dimethylformamide Annealing on the Local Electrical Properties of Organometal Halide Perovskite Solar Cells: an Atomic Force Microscopy Investigation[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(39):26002-26007.
APA	Li, Jiang-Jun,Ma, Jing-Yuan,Hu, Jin-Song,Wang, Dong,&Wan, Li-Jun.(2016).Influence of N,N-Dimethylformamide Annealing on the Local Electrical Properties of Organometal Halide Perovskite Solar Cells: an Atomic Force Microscopy Investigation.ACS APPLIED MATERIALS & INTERFACES,8(39),26002-26007.
MLA	Li, Jiang-Jun,et al."Influence of N,N-Dimethylformamide Annealing on the Local Electrical Properties of Organometal Halide Perovskite Solar Cells: an Atomic Force Microscopy Investigation".ACS APPLIED MATERIALS & INTERFACES 8.39(2016):26002-26007.