Fig. 5: Extension of the HAAPP strategy and comparison with hydrothermal method.

a PL spectra, b lifetime decay curves, c product yield and PL intensity of Cs2ZrCl6 prepared by the HAAPP strategy but with different concentration of HCl; Comparison of d PL spectra, e product yields and PLQY values for Cs2Na0.9Ag0.1In0.95Bi0.05Cl6 and Cs2ZrCl6 prepared by the HAAPP strategy and conventional hydrothermal method