介绍了二维钙钛矿的结构以及其对应的独特光激子性质。介绍了光谱中声子的特性，分析了强的电声相互作用可能是以n=3为主的混合二维钙钛矿适合作为光电材料的物理原因。最后，根据前文介绍探讨了需要进一步厘清的问题，以期为优化二维钙钛矿光电材料和器件提供思路。

The structure of two-dimensional perovskites and their corresponding unique exciton properties were introduced， especially the characteristics of phonon in the spectrum. It was analyzed that the strong electron?phonon interaction may be the physical reason why n=3-based mixed two-dimensional perovskites were suitable for photoelectric materials. Finally， the further problems were clarified in order to provide ideas for the optimization of two-dimensional perovskite optoelectronic materials and devices.