Size controlled synthesis of CsPbBr3 QDs by two-phase emulsion extraction

作者：Li, Fan; Luo, Liang; Wang, Maomao; Peng, Yan; Wu, Xiaoxia; Su, Zhi; Wang, Shifeng; Wang, Fu^*

来源：Functional Materials Letters, 2019, 12(2): 1950012.

DOI：10.1142/S1793604719500127

• CsPbBr3 QDs
• two-phase emulsion extraction
• controllable size

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 nm. The prepared CsPbBr3 QDs exhibited a broad absorption range from 325 to 500 nm, and a narrow full width at half maximum (FWHM) of photoluminescence (PL) emission down to 15 nm. A quantum efficiency of about 69% and a PL lifetime of 40.85 ns were achieved at the optimized condition, demonstrating the great application potential in optoelectronics and energy storage.

• 出版日期2019-4
• 单位新疆师范大学