Effect of surface ligand density on the amplified spontaneous emission properties of CsPbI2Br quantum dots

Air Sensitive Amplified Spontaneous Emission in Lecithin Capped Cspbbr3 Nanocrystals Thin Films

“…The obtained threshold value is among the lowest to date reported in CsPbBr 3 NCs neat films under nanosecond pumping [46][47][48], evidencing excellent ASE properties of these lecithin-capped NCs. We also observe that the corresponding excitation power density (about 200 kW cm − 2 ) can be easily obtained with cheap pumping sources, like pulsed inorganic UV diodes [49].…”