气候变化领域集成服务门户(CCPortal): Ferroelectricity-free lead halide perovskites

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DOI	10.1039/c9ee00884e
	Ferroelectricity-free lead halide perovskites
	Gómez A.; Wang Q.; Goñi A.R.; Campoy-Quiles M.; Abate A.
发表日期	2019
ISSN	1754-5692
起始页码	2537
结束页码	2547
卷号	12 期号:8
英文摘要	Direct piezoelectric force microscopy (DPFM) is employed to examine whether or not lead halide perovskites exhibit ferroelectricity. Compared to conventional piezoelectric force microscopy, DPFM is a novel technique capable of measuring piezoelectricity directly. This fact is fundamental to be able to examine the existence of ferroelectricity in lead halide perovskites, an issue that has been under debate for several years. DPFM is used to detect the current signals, i.e. changes in the charge distribution under the influence of the scan direction and applied force of the atomic force microscope (AFM) tip in contact mode. For comparison, (i) we use DPFM on lead halide perovskites and well-known ferroelectric materials (i.e. periodically poled lithium niobate and lead zirconate titanate); and (ii) we conduct parallel experiments on MAPbI3 films of different grain sizes, film thicknesses, substrates, and textures using DPFM as well as piezoelectric force microscopy (PFM) and electrostatic force microscopy (EFM). In contrast to previous work that claimed there were ferroelectric domains in MAPbI3 perovskite films, our work shows that the studied perovskite films Cs0.05(FA0.83MA0.17)0.95Pb(I0.83Br0.17)3 and MAPbI3 are ferroelectricity-free. The observed current profiles of lead halide perovskites possibly originate from ion migration that happens under an applied electrical bias and in strained samples under mechanical stress. This work provides a deeper understanding of the fundamental physical properties of the organic-inorganic lead halide perovskites and solves a longstanding dispute about their non-ferroelectric character: an issue of high relevance for optoelectronic and photovoltaic applications. © The Royal Society of Chemistry 2019.
语种	英语
scopus关键词	Atomic force microscopy; Crystallography; Electrostatic force; Ferroelectric films; Ferroelectricity; Lead zirconate titanate; Niobium compounds; Perovskite; Piezoelectricity; Textures; Electrostatic force microscopy; Ferroelectric domains; Halide perovskites; Mechanical stress; Organic-inorganic; Periodically poled lithium niobate; Photovoltaic applications; Piezoelectric force microscopy; Electric force microscopy; film; halide; lead; lithium; perovskite; photovoltaic system; piezoelectricity
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162471
作者单位	Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, 08193, Spain; Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstrasse 5, Berlin, 12489, Germany; ICREA Passeig Lluís Companys 23, Barcelona, 08010, Spain; Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian, 350002, China; Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale Tecchio 80, Fuorigrotta, Naples, 80125, Italy
推荐引用方式 GB/T 7714	Gómez A.,Wang Q.,Goñi A.R.,et al. Ferroelectricity-free lead halide perovskites[J],2019,12(8).
APA	Gómez A.,Wang Q.,Goñi A.R.,Campoy-Quiles M.,&Abate A..(2019).Ferroelectricity-free lead halide perovskites.Energy and Environmental Science,12(8).
MLA	Gómez A.,et al."Ferroelectricity-free lead halide perovskites".Energy and Environmental Science 12.8(2019).