Rational Design on Chemical Regulation of Interfacial Microstress Engineering by Matching Young's Modulus in a CsPbBr3Perovskite Film with Mechanical Compatibility toward Enhanced Photoelectric Conversion Efficiency

doi:10.1021/acsami.2c02694

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	Rational Design on Chemical Regulation of Interfacial Microstress Engineering by Matching Young's Modulus in a CsPbBr3Perovskite Film with Mechanical Compatibility toward Enhanced Photoelectric Conversion Efficiency
	Cui, Chong-Yang 2,3; Li, Cai-Xia 2,3; Liu, Wen-Wu 2,3; Liu, Yu-Cheng 2,3; Niu, Sheng-Tao 2,3; Xu, Zhi-Qiang 2,3; Zou, Rong 2,3; Niu, Wen-Jun 2,3; Liu, Mao-Cheng 2,3; Liu, Ming-Jin 4,5,6
刊名	ACS Applied Materials and Interfaces
	2022-05-04
卷号	14 期号:17 页码:20257-20267
关键词	Bromine compounds Carrier lifetime Cell engineering Chemical stability Conversion efficiency Efficiency Elastic moduli Perovskite Perovskite solar cells Positive ions Solar power generation Thermal expansion Anion vacancy Choline bromide Cspbbr3perovskite solar cell Improved stability Matched young modulus Perovskite films Photo-electric conversion efficiency Stress release Thermal stress release Young modulus
ISSN号	1944-8244
DOI	10.1021/acsami.2c02694
英文摘要	Thermodynamically induced tensile stress in the perovskite film will lead to the formation of atomic vacancies, seriously destroying the photovoltaic efficiency stability of the perovskite solar cells (PSCs). Among them, cations and halide anions vacancies are unavoidable; these point vacancies are considered to be a major source of the ionic migration and perovskite degradation at the crystal boundary and surface of the perovskite films. Here, we use choline bromide to modify the perovskite film by occupying the atomic defects in the CsPbBr3perovskite film. The results show that the zwitterion quaternary ammonium ions and bromide ions in choline bromide can simultaneously occupy the Cs+cation and Br-anions vacancies in the perovskite film by the ionic bonding effect, for which the defect-state density on the surface of the perovskite film can be significantly reduced, leading to the effective enhancement of carrier lifetime. In addition, the residual stress at the crystal boundary can be effectively reduced by lowering the Young's modulus in the CsPbBr3perovskite film. As a result, the optimized device achieves a photoelectric conversion efficiency (PCE) of 9.06% with an increase of 41.1% compared to the control device with a PCE of 6.42%. Most importantly, the newborn thermal stress due to thermal expansion during heat working conditions can be transferred from the polycrystalline perovskite to the carbon layer by the matched Young's modulus, thus resulting in improved stability perovskite film under environmental conditions. The work provides new insights for preparing high-quality perovskite films with low defect-state density and residual stress. © 2022 American Chemical Society. All rights reserved.
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	American Chemical Society
WOS记录号	WOS:000812975200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158485]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院马克思主义学院
作者单位	1.Foshan Flex Photonics Co. Ltd., Foshan; 528299, China 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 3.College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 4.Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu; 30013, Taiwan; 5.Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu; 30013, Taiwan; 6.Department of Physics, National Sun Yat-Sen University, Kaohsiung; 80424, Taiwan; 7.Zibo Institute of Measurement Technology, Zibo; 255020, China;
推荐引用方式 GB/T 7714	Cui, Chong-Yang,Li, Cai-Xia,Liu, Wen-Wu,et al. Rational Design on Chemical Regulation of Interfacial Microstress Engineering by Matching Young's Modulus in a CsPbBr3Perovskite Film with Mechanical Compatibility toward Enhanced Photoelectric Conversion Efficiency[J]. ACS Applied Materials and Interfaces,2022,14(17):20257-20267.
APA	Cui, Chong-Yang.,Li, Cai-Xia.,Liu, Wen-Wu.,Liu, Yu-Cheng.,Niu, Sheng-Tao.,...&Chueh, Yu-Lun.(2022).Rational Design on Chemical Regulation of Interfacial Microstress Engineering by Matching Young's Modulus in a CsPbBr3Perovskite Film with Mechanical Compatibility toward Enhanced Photoelectric Conversion Efficiency.ACS Applied Materials and Interfaces,14(17),20257-20267.
MLA	Cui, Chong-Yang,et al."Rational Design on Chemical Regulation of Interfacial Microstress Engineering by Matching Young's Modulus in a CsPbBr3Perovskite Film with Mechanical Compatibility toward Enhanced Photoelectric Conversion Efficiency".ACS Applied Materials and Interfaces 14.17(2022):20257-20267.