Development and Prospects of Halide Perovskite Single Crystal Films

Abstract Halide perovskite single crystal (HPSC) films have demonstrated extraordinary performance in solar cells, photodetectors, and lighting applications, owing to the high carrier mobility, long carrier diffusion length, tunable bandgap, and large light absorption coefficients of these materials. Here, the recent development of the major HPSC thin films is reviewed systematically, including MAPbI 3 , α‐FAPbI 3 , MAPbBr 3 , CsPbBr 3 , with special emphasis on different classes of fabrication methods and thin‐film characteristics. Finally, the conclusion and prospects in this field are discussed in detail. It is anticipated that the HPSC thin films will lead to a compelling future for the rising electronic applications.