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本文介绍了用热蒸发技术制备ＣｓＣｕ２Ｉ３薄膜的方法；根据ＣｓＣｕ２Ｉ３的低温吸收谱计算出其激子参数；谱分析表明，ＣｓＣｕ２Ｉ３的电子和激子激发定域在ＣｕＩ３－４组成的双链结构之中是导致其光谱复杂性的主要原因。
In this paper, a method for preparing CsCu2I3 thin film by thermal evaporation is introduced. The exciton parameters are calculated based on the low temperature absorption spectra of CsCu2I3. The spectral analysis shows that the electron and exciton excitation of CsCu2I3 are localized in the double-stranded structure of CuI3-4 Is the main reason for its spectral complexity.