Energy transfer and tunable luminescence properties in Y3Al2Ga3O12: Tb3+, Eu3+ phosphors

被引：59

作者：

Li, Zhenzhang ^{[1
,3
]}

Zhong, Biliang ^{[3
]}

Cao, Yujun ^{[3
]}

Zhang, Shaoan ^{[3
]}

Lv, Yang ^{[1
]}

Mu, Zhongfei ^{[1
]}

Hu, Zhengfa ^{[2
]}

Hu, Yihua ^{[1
,2
]}

机构：

[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, WaiHuan Xi Rd 100, Guangzhou 510006, Guangdong, Peoples R China

[2] Synergy Innovat Inst Modern Ind GDUT & Dongyuan, WaiHuan Xi Rd 100, Guangzhou 510006, Guangdong, Peoples R China

[3] Guangzhou Maritime Univ, Hongshan Three Rd 101, Guangzhou 510725, Guangdong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 787卷

基金：

中国国家自然科学基金;

关键词：

First-principles calculations; Energy transfer; Tunable luminescence; Thermal stability; ELECTRONIC-STRUCTURE; RED; BAND; TEMPERATURE; CE3+; EXCITATION;

D O I：

10.1016/j.jallcom.2019.02.154

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper demonstrates that a highly thermal stable and tunable-luminescence phosphors Y3Al2Ga3O12: Tb3+, Eu3+ with efficient energy transfer, which is prepared by the high-temperature solid-state reaction. First-principles method is performed to analyze the electronic structures, band structure, density of states and formation energy of Y3Al2Ga3O12: Tb3+, Eu3+. For high luminescence output, Y-3-xAl(2)Ga(3)O(12): xTb(3+) and Y-3-yAl(2)Ga(3)O(12): yEu(3+) with high concentration quenching (x = 0.5 and y = 0.7) are achieved. The effect of energy transfer from Tb3+ to Eu3+ on emission color tuning and luminescence thermal stability is studied. The energy transfer efficiency from Tb3+ to Eu3+ reaches as high as 74.2% and emission color can be tuned from green, yellow and red by adjusting the ratio of Tb3+/Eu3+. What's more, Y3Al2Ga3O12: Tb3+, Eu3+ phosphor exhibits a good thermal stability, of which emission intensity still keeps 60% at 150 degrees C. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：672 / 682

页数：11

共 53 条

[31] DIFFUSE REFLECTANCE SPECTROSCOPY - COMPARISON OF THEORIES [J].