甲脒
钙钛矿(结构)
光谱学
离子
电容
光电子学
材料科学
碘化物
化学
分析化学(期刊)
化学物理
无机化学
物理
物理化学
结晶学
量子力学
有机化学
色谱法
电极
作者
A. Urbaniak,Aniela Czudek,Janardan Dagar,Eva Unger
标识
DOI:10.1016/j.solmat.2022.111618
摘要
This work concerns the interpretation of capacitance spectroscopy results in perovskite-based solar cells. Based on the deep level transient spectroscopy and admittance spectroscopy results, we present arguments that the observable signals in perovskite-based solar cells come from anion migration rather than being a response from deep trap energy levels. The ion migration parameters, such as activation energy and ion concentration, are calculated and compared to theoretical values for different migration paths of ions in perovskites. Those parameters evolve with time, reflecting in the degradation of the cells, which we propose to link with a change in the anion migration path in perovskite.
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