Abstract:
We report on the facile emulsion approach to synthesize zero-dimensional inorganic Cs4PbBr6 samples and explore their structural and luminescence properties. Crystallinity and morphological characterizations are performed, and the band gap is evaluated to be around 2.29 eV. The photoluminescence spectra of Cs4PbBr6 perovskite exhibit peaks in the green region. Cathodoluminescence (CL) spectroscopy was executed to investigate the emission properties of the sample as well as its structural integrity under exposure to high-energy electron beams. The time-dependent CL study under exposure to electron beam reveals no apparent degradation even after 60 min and establishes the stability of the material.