Healthy and stable lighting via single-component white perovskite nanoplatesf

摘要

Single-component healthy white light was achieved via Mn~(2+)post-doping into blue perovskite nanoplates(NPLs).The white light consists of two complementary colors,sky-blue(482 nm)and orange-red(610 nm),without harmful deep blue light(400-450 nm),which realizes the Commission Internationale de I’Eclairage(CIE)coordinates of(0.33,0.33)(standard pure white light)and a color temperature of 6000 K.Benefitting from the lattice shrinking via Mn~(2+)doping,the stability of white NPLs toward long-term storage,UV light,heat,and polar solvents was greatly improved.Finally,a healthy and stable white light-emitting diode(WLED)was fabricated via down-conversion of a UV light LED with our white perovskite NPLs,and the WLED worked continuously for 240 minutes with a color drift of only(±0.006,±0.004)and with a half lifetime(T_(50))of 212 minutes.