Atomic scale insights into structure instability and decomposition pathway of methyl ammonium lead iodide perovskite

	Atomic scale insights into structure instability and decomposition pathway of methyl ammonium lead iodide perovskite
	Dapeng Yu; Jiangyu Li; and Peng Gao.; Shulin Chen; Xiaowei Zhang; Jinjin Zhao; Ying Zhang; Guoli Kong; Qian Li; Ning Li
刊名	Nature Communications
	2018
文献子类	期刊论文
英文摘要	Organic–inorganic hybrid perovskites are promising candidates for the next-generation solar cells. Many efforts have been made to study their structures in the search for a better mechanistic understanding to guide the materials optimization. Here, we investigate the structure instability of the single-crystalline CH 3 NH 3 PbI 3 (MAPbI 3 ) film by using transmis- sion electron microscopy. We find that MAPbI 3 is very sensitive to the electron beam illu- mination and rapidly decomposes into the hexagonal PbI 2 . We propose a decomposition pathway, initiated with the loss of iodine ions, resulting in eventual collapse of perovskite structure and its decomposition into PbI 2 . These findings impose important question on the interpretation of experimental data based on electron diffraction and highlight the need to circumvent material decomposition in future electron microscopy studies. The structural evolution during decomposition process also sheds light on the structure instability of organic–inorganic hybrid perovskites in solar cell applications.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/14416]
专题	深圳先进技术研究院_医工所
推荐引用方式 GB/T 7714	Dapeng Yu,Jiangyu Li,and Peng Gao.,et al. Atomic scale insights into structure instability and decomposition pathway of methyl ammonium lead iodide perovskite[J]. Nature Communications,2018.
APA	Dapeng Yu.,Jiangyu Li.,and Peng Gao..,Shulin Chen.,Xiaowei Zhang.,...&Junlei Qi.(2018).Atomic scale insights into structure instability and decomposition pathway of methyl ammonium lead iodide perovskite.Nature Communications.
MLA	Dapeng Yu,et al."Atomic scale insights into structure instability and decomposition pathway of methyl ammonium lead iodide perovskite".Nature Communications (2018).