Stable and efficient luminescence of Cs4PbBr6−xIx PQDs glass: a potential material for wide color gamut display

Zero-dimensional Cs4PbBr6−xIx perovskite quantum dots (PQDs) glass is successfully prepared via a melt quenching method, which provides infinite possibilities for achieving the whole family of zero-dimensional PQDs glass. The test results demonstrate excellent thermal stability and high photoluminescence quantum yields (PLQYs) of Cs4PbBr6−xIx PQDs glass (up to 50%). Finally, the combination of Cs4PbBr6−xIx PQDs glass with an InGaN blue chip is used to fabricate white light-emitting diodes (WLED), which show good color stability at a large operating current, and the color gamut area reaches 137% of NTSC. The above results indicate that zero-dimensional Cs4PbBr6−xIx PQDs glass materials have a broad application prospect in the display lighting field.