Structure and properties of an inorganic perovskite Cs₂SnI₆ demonstrated its potential as a light-harvester or electron-hole transport material; however, its optoelectronic properties are poorer than those of lead-based perovskites. Here, we report the way of light tuning of absorption and transport properties of cesium iodostannate(IV) Cs₂SnI₆ via partial heterovalent substitution of tin for indium. Light absorption and optical bandgaps of materials have been investigated by UV-vis absorption and photoluminescent spectroscopies. Low-temperature electron paramagnetic resonance spectroscopy was used to study the kind of paramagnetic centers in materials.

中文翻译：

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无铅钙钛矿Cs2SnI6的铟掺杂。

无机钙钛矿Cs ₂ SnI _6的结构和性能证明了其作为光捕获或电子空穴传输材料的潜力。然而，其光电性能比铅基钙钛矿差。在这里，我们报告了通过锡的部分异价取代铟对碘化锡酸铯（IV）Cs ₂ SnI ₆的吸收和传输性质进行光调谐的方法。已经通过紫外可见吸收和光致发光光谱学研究了材料的光吸收和光学带隙。低温电子顺磁共振波谱用于研究材料中顺磁性中心的种类。