“…[1][2][3][4] In recent years, CsPbX 3 PQDs (X ¼ Cl, Br, I) have attracted a great deal of attention from materials scientists as promising optoelectronic materials. [5][6][7][8][9][10] Compared to organic-inorganic hybrid perovskite materials, all-inorganic perovskites have the advantages of simple preparation and good stability. [11][12][13][14][15][16] Despite plenty of advantages, the toxic nature of Pb and limited tolerance of all inorganic perovskites to moisture, ultraviolet (UV) light and the adjacent environment, cannot be ignored.…”