CsPbBr3 Nanorod Luminescent Property Study

In recent years, metal halide perovskite materials have garnered significant attention due to their low cost, high absorption coefficient, tunable bandgap, and high fluorescence quantum yield. These materials have found wide applications in optoelectronic devices, bioimaging, and solar cells. However, the instability of organic–inorganic hybrid perovskites has led to a shift in focus toward metal halide perovskites. These materials offer the advantages of simple preparation and tunable morphology, making them promising for various optoelectronic applications. Different morphologies of metal halide perovskite materials include quantum dots, nanowires, nanorods, and nanoplates, and these morphological differences can impact their photoluminescence properties. In this study, we successfully prepared CsPbBr3 nanorods using an elemental exchange method. Compared with traditional hot-injection methods, this approach allows for easier control of the nanorod morphology. These nanorods exhibited higher fluorescence intensity, improved fluorescence quantum yield, and enhanced photoluminescence lifetime compared to traditional nanocrystals. Therefore, this method of preparing nanorods presents a new direction for the development of metal halide perovskite optical materials.