Strong-Excitation Photoluminescence of PbBr2· CH3NH2Crystals

The photoluminescence spectra of PbBr2· CH3NH2crystals were measured at 293 and 80 K as a function of excitation intensity and wavelength. The photoluminescence was shown to be due to free-exciton recombination with minor Stokes losses. Under high-intensity excitation, stimulated emission was observed.