Microscopic Investigation of Grain Boundaries in Organolead Halide Perovskite Solar Cells

CORC > 化学研究所 > 中国科学院化学研究所 > 分子纳米结构与纳米技术实验室

	Microscopic Investigation of Grain Boundaries in Organolead Halide Perovskite Solar Cells
	Li, Jiang-Jun; Ma, Jing-Yuan; Ge, Qian-Qing; Hu, Jin-Song; Wang, Dong; Wan, Li-Jun
刊名	ACS APPLIED MATERIALS & INTERFACES
	2015-12-30
卷号	7 期号:51 页码:28518-28523
关键词	perovskite solar cells GBs KPFM c-AFM CPD photocurrent
英文摘要	Grain boundaries (GBs) play an important role in organic inorganic halide perovskite solar cells, which have generally been recognized as a new class of materials for photovoltaic applications. To definitely understand the electrical structure and behavior of GBs, here we present Kelvin probe force microscopy and conductive atomic force microscopy (cAFM) measurements of both typical and inverted planar organolead halide perovskite solar cells. By comparing the contact potential difference (CPD) of these two devices in the dark and under illumination, we found that a downward band bending exists in GBs that predominantly attract photoinduced electrons. The c-AFM measurements observed that higher photocurrents flow through GBs when a low bias overcomes the barrier created by the band bending, indicating that GBs act as effective charge dissociation interfaces and photocurrent transduction pathways rather than recombination sites.
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/121111/35799]
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	Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Jiang-Jun,Ma, Jing-Yuan,Ge, Qian-Qing,et al. Microscopic Investigation of Grain Boundaries in Organolead Halide Perovskite Solar Cells[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(51):28518-28523.
APA	Li, Jiang-Jun,Ma, Jing-Yuan,Ge, Qian-Qing,Hu, Jin-Song,Wang, Dong,&Wan, Li-Jun.(2015).Microscopic Investigation of Grain Boundaries in Organolead Halide Perovskite Solar Cells.ACS APPLIED MATERIALS & INTERFACES,7(51),28518-28523.
MLA	Li, Jiang-Jun,et al."Microscopic Investigation of Grain Boundaries in Organolead Halide Perovskite Solar Cells".ACS APPLIED MATERIALS & INTERFACES 7.51(2015):28518-28523.