Fig. 2: Phase and luminous performance of the synthesized products.

XRD patterns of the a Cs2Na1-xAgxInCl6 and b Cs2Na0.9Ag0.1In1-yBiyCl6; c SEM image and component elements maps of Cs2Na0.9Ag0.1In0.95Bi0.05Cl6; d EDS profile of the line scanning marked in (c); e PLE ( < 400 nm) and PL (380–850 nm) spectra of Cs2Na0.9Ag0.1InCl6 and Cs2Na0.9Ag0.1In0.95Bi0.05Cl6, respectively; f Microsecond transient emission spectra of Cs2Na0.9Ag0.1In0.95Bi0.05Cl6 excited at 260 nm; g Product yields and corresponding PL intensities of Cs2Na0.9Ag0.1In0.95Bi0.05Cl6 as a function of the concentration of HCl