Optical properties and optoelectronic applications of rare earth ion-doped perovskite nanomaterials

Metal halide perovskite materials have attracted much attention in various emerging optoelectronic technology fields because of a series of unique physical and chemical properties such as tunable band gap in the visible spectrum, good carrier transmission performance, long charge diffusion length, weak exciton binding energy, high absorption coefficient, high photoelectric conversion efficiency, high defect tolerance, good catalytic performance and simple preparation process. Rare earth ions have rich 4f energy level transition effects, which are expected to promote the absorption, excitation and emission of perovskite nanomaterials, thus showing a wide range of quantum behavior and photoelectric properties with rich content. In light of the needs of practical photoelectric applications, rare earth ion-doped perovskite nanomaterials can significantly improve the photoelectric properties of perovskite nanomaterials, solve the problems of direct application of perovskite nanomaterials in the near-infrared region and improve environmental stability and lead toxicity. The research progress on the structural properties, preparation process, optical properties, stability and application of rare earth ion-doped perovskite nanomaterials for optoelectronic applications were summarized, and their development prospects in the field of new optoelectronic technologies were proposed.