Facile, low-cost, and large-scale synthesis of CsPbBr3 nanorods at room-temperature with 86 % photoluminescence quantum yield

All inorganic cesium lead halide perovskite nanocrystals have attracted widespread attention due to their excellent optical properties. However, large-scale synthesis of high photoluminescence quantum yield (PLQY) CsPbBr 3 nanorods (NRs) is still challenging. Herein, we report a facile, low-cost and large-scale synthesis of CsPbBr 3 NRs with 86 % PLQY at room temperature, in which the employment of acetic acid as precursor solvent promoted the concentrations of Cs + and Pb 2+ in the precursor solution and dominated the formation of CsPbBr 3 NRs. The synthesized CsPbBr 3 NRs with an average width of around 8 nm and average lengths of 18–30 nm have an excellent narrow-band (FWHM = 17 nm) green emission peaked at 517 nm.