Long-term ambient air-stable cubic CsPbBr 3 perovskite quantum dots using molecular bromine.
Surakcha ThapaKarishma BhardwajSiddhant BaselSajan PradhanCharlotte J ElingAli M AdawiJean-Sebastien G BouillardGraeme J StasiukPeter ReissAnand PariyarSudarsan TamangPublished in: Nanoscale advances (2019)
We report unprecedented phase stability of cubic CsPbBr 3 quantum dots in ambient air obtained by using Br 2 as halide precursor. Mechanistic investigation reveals the decisive role of temperature-controlled in situ generated, oleylammonium halide species from molecular halogen and amine for the long term stability and emission tunability of CsPbX 3 (X = Br, I) nanocrystals.