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Highly Efficient and Stable Eu3+-Doped CsPbBr3/Cs4PbBr6 Perovskites for White Light-Emitting Diodes

Authors :
Song Wang
Yan Xu
Renjie Chen
Mengmeng Zhu
Muyi Wang
Mengmeng Cao
Yunpeng Liu
Haojie Ding
Shulan Zhang
Jueyao Bai
Jun Ren
Tongtong Xuan
Huili Li
Source :
Coatings; Volume 12; Issue 4; Pages: 512
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

All-inorganic halide perovskite nanomaterials have a high application potential in the field of display and lighting because of unique photoelectric properties. However, these materials suffer from problems related to poor water and thermal stabilities. In this study, green Eu3+-doped CsPbBr3/Cs4PbBr6 perovskite composites that were synthesized by a saturated recrystallization method at room temperature showed an enhanced photoluminescence quantum yield of 87% and superior water and thermal stabilities to that of undoped perovskites. Finally, green Eu3+-doped CsPbBr3/Cs4PbBr6 perovskite composites were fabricated into white light-emitting diodes (WLEDs) with a wide color gamut (124% of the National Television System Committee standard) and a high efficiency of 43.06 lm/W.

Details

ISSN :
20796412
Volume :
12
Database :
OpenAIRE
Journal :
Coatings
Accession number :
edsair.doi.dedup.....612bb2a7f9dbbe6c2aab1a6782c4f86b
Full Text :
https://doi.org/10.3390/coatings12040512