All-inorganic CsPbI₃ perovskite with phase stabilization are fabricated by employing a simple one-pot solution method with ethanediamine as the additive. The ethanediamine induceds the phase stabilization temperature of all-inorganic CsPbI₃ perovskite film as low as 80 °C by reducing the grain size, which is the lowest reported phase stabilization temperature for CsPbI₃ film so far. More importantly, the prepared films can be stable at room temperature for two months without phase decomposition. The CsPbI₃ perovskite solar cells demonstrate power conversion efficiency to 9.62%.

中文翻译：

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乙二胺为添加剂的全无机CsPbI ₃钙钛矿太阳能电池的低温制备

采用乙二胺为添加剂的简单一锅法制备具有相稳定作用的全无机CsPbI ₃钙钛矿。乙二胺通过减小晶粒尺寸使全无机CsPbI ₃钙钛矿薄膜的相稳定温度低至80°C，这是迄今为止报道的CsPbI ₃薄膜的最低相稳定温度。更重要的是，制得的薄膜在室温下可以稳定两个月而不会发生相分解。CsPbI ₃钙钛矿太阳能电池的功率转换效率达到9.62％。