Two-step spin coating CsPbBr thin films and photodetectors in the atmosphere.

Recently, inorganic halide perovskites, especially CsPbBr, have been attracting attention because of their high efficiency, wide color gamut, and narrow luminescent spectrum. To elevate the perovskite devices' performance, optimizations of crystalline quality, device structures, and fabrication process are essential. Currently, the state-of-the-art fabrication approach of CsPbBr is spin-coating in an inert environment (nitrogen, argon, etc.

Investigation of CsPbBr CVD dynamics at various temperatures.

Since the emerging development of CsPbBr perovskite, chemical vapor deposition (CVD) has become one of the most promising fabrication techniques by which to precisely deposit uniform perovskite thin films. However, there have been few reports on the growth dynamics and chemical reaction parameters (, activation energy) for perovskite CVD. In this work, different deposition rates of CVD-grown CsPbBr thin films were obtained at different substrate temperatures.