1. CsPbBr3/Cs4PbBr6 NCs glass prepared by a composition regulation strategy for amplification spontaneous emission and white light emitting diode.
- Author
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He, Ziyao, Wang, Qin, Liang, Xiaojuan, Yang, Keqin, and Xiang, Weidong
- Subjects
LIGHT emitting diodes ,LIGHT sources ,GLASS ,HEAT treatment - Abstract
As a promising optoelectronic material, all-inorganic perovskite nanocrystals (NCs) have attracted much attention, but there are few studies on zero-dimensional Cs
4 PbBr6 perovskite NCs. Herein, the in situ growth of the CsPbBr3 /Cs4 PbBr6 NCs inside amorphous glass has been achieved by adjusting the ratios of Cs2 CO3 and PbBr2 . The effect of different proportions with raw materials on the phase, microstructure, and photoluminescence (PL) characteristics was discussed in detail. Moreover, CsPbBr3 /Cs4 PbBr6 NCs glass with high photoluminescence quantum yield (PLQY) of ∼58.9% was obtained by optimizing the heat treatment condition. In particular, CsPbBr3 /Cs4 PbBr6 NCs glass realizes low-threshold amplified spontaneous emission (ASE) at room temperature. Meanwhile, as a green light source, CsPbBr3 /Cs4 PbBr6 NCs glass makes white light-emitting diode (WLED) presents a wide color gamut. Importantly, CsPbBr3 /Cs4 PbBr6 NCs glass displays excellent water/thermal stability. All these results prove that CsPbBr3 /Cs4 PbBr6 NCs glass has broad application prospects in the field of lasers and backlight displays. [ABSTRACT FROM AUTHOR]- Published
- 2021
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