气候变化领域集成服务门户(CCPortal): Origin of high piezoelectricity of inorganic halide perovskite thin films and their electromechanical energy-harvesting and physiological current-sensing characteristics

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DOI	10.1039/c9ee03212f
	Origin of high piezoelectricity of inorganic halide perovskite thin films and their electromechanical energy-harvesting and physiological current-sensing characteristics
	Kim D.B.; Park K.H.; Cho Y.S.
发表日期	2020
ISSN	17545692
起始页码	2077
结束页码	2086
卷号	13 期号:7
英文摘要	Halide perovskite materials have been recently recognized to possess potentially strong ferroelectricity and piezoelectricity even though the experimental evidence is very limited. Herein, we report high piezoelectricity of representative inorganic halide CsPbBr3 thin films and their energy harvesting and current-sensing characteristics with an optimization process. This is the very first report of introducing an effective piezoelectric coefficient and energy-harvesting performance for inorganic halide perovskites. A record high piezoelectric coefficient of ∼40.3 pm V-1 was obtained for the optimized CsPbBr3, which was attributed to the extended bonding angles of Pb-Br-Pb and Br-Pb-Pb arising from the applied electric field according to structural simulations. As expected from the high piezoelectricity, the electromechanical energy-harvesting performance was very competitive with excellent values of a ∼16.4 V output voltage and ∼604 nA output current achieved for a large-scale harvester of 5 cm2. Highly strain-sensitive devices were also successfully exemplified to identify specific body-motion from the detected current values in the sensitive inorganic halide patches. © 2020 The Royal Society of Chemistry.
英文关键词	Bromine compounds; Cesium compounds; Crystallography; Lead compounds; Perovskite; Piezoelectric devices; Piezoelectricity; Thin films; Electromechanical energy; Experimental evidence; Halide perovskites; High piezoelectricities; Inorganic halides; Piezoelectric coefficient; Sensitive devices; Structural simulations; Energy harvesting; electrochemistry; energy efficiency; film; halide; inorganic compound; perovskite; physiological response; piezoelectricity
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/189607
作者单位	Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
推荐引用方式 GB/T 7714	Kim D.B.,Park K.H.,Cho Y.S.. Origin of high piezoelectricity of inorganic halide perovskite thin films and their electromechanical energy-harvesting and physiological current-sensing characteristics[J],2020,13(7).
APA	Kim D.B.,Park K.H.,&Cho Y.S..(2020).Origin of high piezoelectricity of inorganic halide perovskite thin films and their electromechanical energy-harvesting and physiological current-sensing characteristics.Energy & Environmental Science,13(7).
MLA	Kim D.B.,et al."Origin of high piezoelectricity of inorganic halide perovskite thin films and their electromechanical energy-harvesting and physiological current-sensing characteristics".Energy & Environmental Science 13.7(2020).