钙钛矿(结构)
X射线光电子能谱
卤化物
碘化物
材料科学
分解
化学
电子
扫描电子显微镜
化学工程
无机化学
结晶学
有机化学
物理
工程类
量子力学
复合材料
作者
Aleksandar R. Milosavljević,Weixin Huang,Subha Sadhu,Sylwia Ptasińska
标识
DOI:10.1002/anie.201605013
摘要
Abstract Methylammonium lead iodide perovskite (MAPbI 3 ), a prototype material for potentially high‐efficient and low‐cost organic–inorganic hybrid perovskite solar cells, has been investigated intensively in recent years. A study of low‐energy electron‐induced transformations in MAPbI 3 is presented, performed by combining controlled electron‐impact irradiation with X‐ray photoelectron spectroscopy and scanning electron microscopy. Changes were observed in both the elemental composition and the morphology of irradiated MAPbI 3 thin films as a function of the electron fluence for incident energies from 4.5 to 60 eV. The results show that low‐energy electrons can affect structural and chemical properties of MAPbI 3 . It is proposed that the transformations are triggered by the interactions with the organic part of the material (methylammonium), resulting in the MAPbI 3 decomposition and aggregation of the hydrocarbon layer.
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