气候变化领域集成服务门户(CCPortal): Extrinsic ion migration in perovskite solar cells

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DOI	10.1039/c7ee00358g
	Extrinsic ion migration in perovskite solar cells
	Li Z.; Xiao C.; Yang Y.; Harvey S.P.; Kim D.H.; Christians J.A.; Yang M.; Schulz P.; Nanayakkara S.U.; Jiang C.-S.; Luther J.M.; Berry J.J.; Beard M.C.; Al-Jassim M.M.; Zhu K.
发表日期	2017
ISSN	17545692
起始页码	1234
结束页码	1242
卷号	10 期号:5
英文摘要	The migration of intrinsic ions (e.g., MA+, Pb2+, I-) in organic-inorganic hybrid perovskites has received significant attention with respect to the critical roles of these ions in the hysteresis and degradation in perovskite solar cells (PSCs). Here, we demonstrate that extrinsic ions (e.g., Li+, H+, Na+), when used in the contact layers in PSCs, can migrate across the perovskite layer and strongly impact PSC operation. In a TiO2/perovskite/spiro-OMeTAD-based PSC, Li+-ion migration from spiro-OMeTAD to the perovskite and TiO2 layer is illustrated by time-of-flight secondary-ion mass spectrometry. The movement of Li+ ions in PSCs plays an important role in modulating the solar cell performance, tuning TiO2 carrier-extraction properties, and affecting hysteresis in PSCs. The influence of Li+-ion migration was investigated using time-resolved photoluminescence, Kelvin probe force microscopy, and external quantum efficiency spectra. Other extrinsic ions such as H+ and Na+ also show a clear impact on the performance and hysteresis in PSCs. Understanding the impacts of extrinsic ions in perovskite-based devices could lead to new material and device designs to further advance perovskite technology for various applications. © 2017 The Royal Society of Chemistry.
英文关键词	Hysteresis; Ions; Lithium compounds; organic-inorganic materials; Perovskite; Secondary ion mass spectrometry; Solar cells; Titanium dioxide; Carrier extraction; External quantum efficiency; Kelvin probe force microscopy; Organic-inorganic hybrid; Perovskite layers; Solar cell performance; Time of flight secondary ion mass spectrometry; Time-resolved photoluminescence; Perovskite solar cells; degradation; energy efficiency; equipment; extraction method; fuel cell; hysteresis; ion exchange; performance assessment; perovskite; photochemistry; quantum mechanics
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190553
作者单位	National Renewable Energy Laboratory, Golden, CO 80401, United States; Colorado School of Mines, Golden, CO 80401, United States
推荐引用方式 GB/T 7714	Li Z.,Xiao C.,Yang Y.,et al. Extrinsic ion migration in perovskite solar cells[J],2017,10(5).
APA	Li Z..,Xiao C..,Yang Y..,Harvey S.P..,Kim D.H..,...&Zhu K..(2017).Extrinsic ion migration in perovskite solar cells.Energy & Environmental Science,10(5).
MLA	Li Z.,et al."Extrinsic ion migration in perovskite solar cells".Energy & Environmental Science 10.5(2017).