Bluish-white Light-emitting 2D Sheets of Lead-free Perovskite Cesium Titanium Bromide (CsTiBr) by a Two-stage Deposition Technique.

Bluish-white light-emitting materials are commonly used in LED lighting because they produce natural-looking light. Here we report the photoluminescent emission (PL) of novel, two-dimensional lead-free CsTiBr perovskite prepared via a two-stage deposition process. The formation of two-dimensional nanosheets of CsTiBr perovskite is confirmed by XRD, EDAX, and FESEM analysis.