Photoluminescent properties of near-infrared excited blue emission in Yb, Tm co-doped LaGaO3 phosphors

被引：24

作者：

Yang, Hyun Kyoung ^{[1
]}

Oh, Jo Hyun ^{[2
]}

Moon, Byung Kee ^{[2
]}

Jeong, Jung Hyun ^{[2
]}

Yi, Soung Soo ^{[3
]}

机构：

[1] Pukyong Natl Univ, Dept LED Convergence Engn, Pusan 608739, South Korea

[2] Pukyong Natl Univ, Dept Phys, Pusan 608737, South Korea

[3] Silla Univ, Dept Mat Sci & Engn, Pusan 614736, South Korea

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

LaGaO3:Tm3+; Yb3+; LED; Luminescence; Up-conversion; UP-CONVERSION; VACUUM-ULTRAVIOLET; LUMINESCENCE; TB; LN; ER;

D O I：

10.1016/j.ceramint.2014.05.051

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

LaGaO3:Tm3+, Yb3+ powder with different Yb3+ contents (0-similar to 0.15 mol) was synthesized by a conventional solid-state reaction. The structure, morphology and chemical analysis of the as-prepared phosphors were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS) techniques, respectively. The photoluminescence properties of the as-prepared powder samples were studied. The spectrum consisted of (1)G(4)-> H-3(6), weak (1)G(4)-> F-3(4), and intense H-3(4)-> H-3(6) transition bands within the f(12) configuration of Tm3+, together with the F-2(5/2)-> F-2(7/2) transition of Yb3+. Up-converted emission of LaGaO3:Tm3+, Yb3+ powders was observed under laser diode excitation of 975 nm. Obvious differences in up-converted emission spectra among the as-obtained products were observed, and possible reasons were discussed. The corresponding up-conversion mechanism was also proposed. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：13357 / 13361

页数：5

共 24 条

[1] Upconversion properties of Tb3+-Yb3+ codoped fluorophosphate glasses [J].