Growth and characterization of all-inorganic lead halide perovskite semiconductor CsPbBr3 single crystals

Abstract

As a typical representative of all-inorganic lead halide perovskites, cesium lead bromide (CsPbBr₃) has attracted significant attention in the context of photovoltaics and other optoelectronic applications in recent years. In this paper, CsPbBr₃ single crystal growth was conducted by a creative electronic dynamic gradient (EDG) method. The crystal structure was systematically investigated using scientific instruments and equipment. X-ray diffraction techniques, including X-ray diffraction (XRD), temperature-dependent X-ray powder diffraction and the X-ray rocking curve, were used to identify the phase and to investigate phase transition rules. Electron diffraction techniques, including high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and electron backscatter diffraction (EBSD), were used to investigate the crystal micro-structure. The final results indicated that the grown CsPbBr₃ crystal was a perfect single crystal preferentially orienting in the (110) direction and met the basic demand of its applications.