Abstract
All-inorganic perovskite CsPbBr3 QDs were prepared by two-phase (water and toluene) emulsion extraction method. By tuning the concentration of ligand, the size of QDs could be easily controlled in the range of 1–4.7[Formula: see text]nm. The prepared CsPbBr3 QDs exhibited a broad absorption range from 325 to 500[Formula: see text]nm, and a narrow full width at half maximum (FWHM) of photoluminescence (PL) emission down to 15[Formula: see text]nm. A quantum efficiency of about 69% and a PL lifetime of 40.85[Formula: see text]ns were achieved at the optimized condition, demonstrating the great application potential in optoelectronics and energy storage.
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