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Temperature Effects in the Composition of Metal Halide Perovskite thin Films

机译:金属卤化物钙钛矿薄膜组成中的温度效应

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Metal halide perovskites have shown to be a structure with great promise as an efficient photovoltaic, but at the same time it is affected by instability problems that degrade their performance. Degradation mechanisms vary with temperature, moisture, oxidation, and energy conversion during light exposure. We study performance loss due to temperature by probing diffusion of elemental composition across the thickness of films produced by spin coating and for temperatures ranging from 20 to 200°C. X-ray reflectivity was used to identify the electron density, composition, and quality of the films, aided with X-ray fluorescence and X-ray photoelectron spectroscopy studies to obtain information about degradation of the organic phase of the films.
机译:钙钛矿金属卤化物已被证明是一种有前景的结构,可作为一种高效的光伏电池,但同时它也受到不稳定问题的影响,这些问题会降低其性能。曝光期间,降解机理会随温度,湿度,氧化和能量转换而变化。我们通过探测元素组成在旋涂生产的薄膜厚度上的扩散以及温度范围为20至200°C的情况下,研究了温度导致的性能损失。 X射线反射率用于确定薄膜的电子密度,组成和质量,并借助X射线荧光和X射线光电子能谱研究获得有关薄膜有机相降解的信息。

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