Effect of A3+ (A = Y, Bi) codoping on the enhancement of photoluminescence performance of Li5La3Nb2O12:Eu3+ red-emitting phosphor for white light-emitting diodes

The Li5La3Nb2O12:Eu3+ red-emitting phosphors with Y3+/Bi3+ codoped are prepared via sol-combustion for improving the luminescence performance. All samples with single Li5La3Nb2O12 structure are obtained, without the impurity phases of Y3+ and Bi3+. After codoping Y3+ and Bi3+, the luminescence inten...

Full description

Saved in:
Bibliographic Details
Published in:Ceramics international 2023-08, Vol.49 (15), p.25665-25674
Main Authors: Zhao, Zhou, Wang, Xiaomeng, Zhang, Wentao, Chen, Lisen, Zhu, Haiwen, Qu, Chen
Format: Article
Language:English
Subjects:
Crystal field
Niobate
Partial substitution
Photoluminescence
Red phosphor
W-LEDs
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Li5La3Nb2O12:Eu3+ red-emitting phosphors with Y3+/Bi3+ codoped are prepared via sol-combustion for improving the luminescence performance. All samples with single Li5La3Nb2O12 structure are obtained, without the impurity phases of Y3+ and Bi3+. After codoping Y3+ and Bi3+, the luminescence intensity at 609 nm increases 1.77- and 1.61-fold compared to that of Li5La3Nb2O12:Eu3+, respectively. The actual w-LEDs are realized through combining the as-prepared Li5La3Nb2O12:Eu3+, A3+ red phosphor and commercial blue/green phosphors, which exhibiting the soft and bright white light. Furthermore, the as-prepared red-emitting phosphor is also packaged in commercial w-LEDs to improve the chromatic parameters of white light. Therefore, all the results demonstrate that the Li5La3Nb2O12:Eu3+, A3+ red phosphor with excellent performance has an application value in warm w-LEDs field.
ISSN:0272-8842
DOI:10.1016/j.ceramint.2023.05.109