干旱区生态环境知识资源中心(Arid): Synergy between Ion Migration and Charge Carrier Recombination in Metal-Halide Perovskites

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DOI	10.1021/jacs.9b12391
	Synergy between Ion Migration and Charge Carrier Recombination in Metal-Halide Perovskites
	Tong, Chuan-Jia 1,2,3; Li, Linqiu 2; Liu, Li-Min 1; Prezhdo, Oleg V.2
通讯作者	Liu, Li-Min ; Prezhdo, Oleg V.
来源期刊	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN	0002-7863
EISSN	1520-5126
出版年	2020
卷号	142 期号:6 页码:3060-3068
英文摘要	Charge carrier recombination plays a vital role in the CH3NH3PbI3 perovskite solar cell. By investigating a possible synergy between ion migration and charge carrier recombination, we demonstrate that the nonradiative recombination accelerates by an order of magnitude during iodide migration. The migration induces lattice distortion that brings electrons and holes close to each other arid increases their electrostatic interactions. The wave function localization in the same spatial region, and the enhanced lattice and iodide movements increase the nonadiabatic coupling. At the same time, quantum coherence lasts longer, because electron and hole energy levels become correlated. All these factors greatly increase the recombination rate. Moreover, the energy level of the iodide vacancy created during the migration moves from inside the conduction band in the equilibrated structure into the band gap, acting as a typical efficient nonradiative charge recombination center. Our work shows that the different dynamic processes are strongly correlated in halide perovskites and demonstrates that defects, considered to be benign, can become very detrimental under non-equilibrium conditions. The reported results strongly suggest that ion migration should be avoided in halide perovskites, both for its own reasons, such as the large current-voltage hysteresis, and because it greatly accelerates charge carrier losses.
类型	Article
语种	英语
国家	Peoples R China ; USA ; England
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000514255300044
WOS关键词	ELECTRON-HOLE RECOMBINATION ; METHYLAMMONIUM LEAD IODIDE ; SOLAR-CELL ; HYBRID PEROVSKITES ; PYXAID PROGRAM ; CH3NH3PBI3 ; DEFECTS ; HYSTERESIS ; DIFFUSION ; 1ST-PRINCIPLES
WOS类目	Chemistry, Multidisciplinary
WOS研究方向	Chemistry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315091
作者单位	1.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China; 2.Univ Southern Calif, Dept Chem, Los Angeles, CA 90089 USA; 3.Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
推荐引用方式 GB/T 7714	Tong, Chuan-Jia,Li, Linqiu,Liu, Li-Min,et al. Synergy between Ion Migration and Charge Carrier Recombination in Metal-Halide Perovskites[J],2020,142(6):3060-3068.
APA	Tong, Chuan-Jia,Li, Linqiu,Liu, Li-Min,&Prezhdo, Oleg V..(2020).Synergy between Ion Migration and Charge Carrier Recombination in Metal-Halide Perovskites.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,142(6),3060-3068.
MLA	Tong, Chuan-Jia,et al."Synergy between Ion Migration and Charge Carrier Recombination in Metal-Halide Perovskites".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 142.6(2020):3060-3068.