Detecting the origin of luminescence in Er3+-doped hexagonal Na1.5Gd1.5F6 phosphors

被引：35

作者：

Wang, Xiangfu ^{[1
,2
,3
]}

Bu, Yanyan ^{[1
]}

Yan, Xiaohong ^{[1
]}

Cai, Peiqing ^{[2
,3
]}

Wang, Jing ^{[2
,3
]}

Qin, Lin ^{[2
,3
]}

Thiquynh Vu ^{[2
,3
]}

Seo, Hyo Jin ^{[2
,3
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Sch Elect Sci & Engn, Nanjing 210023, Jiangsu, Peoples R China

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

[3] Pukyong Natl Univ, Interdisciplinary Program Biomed Mech & Elect Eng, Busan 608737, South Korea

来源：

OPTICS LETTERS | 2016年 / 41卷 / 22期

基金：

新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

SITE-SELECTIVE SPECTROSCOPY; UP-CONVERSION; NANOCRYSTALS;

D O I：

10.1364/OL.41.005314

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Understanding site-selective fluorescence is one of valuable importance for spectrum modulation. In this Letter, we observed the existence of two non-equivalent Gd-activated crystallographic sites in an Er3+-doped hexagonal Na1.5Gd1.5F6 phosphor. It is proved that two green emissions from the S-4(3/2) level separately originate from the Gd1 (540 nm) and Na2/Gd2 (550-555 nm) crystallographic sites, and the 657 nm red emission from the F-4(9/2) level only originates from Na2/Gd2 site through using the time-resolved luminescence spectra. The 142.2% absolute enhancement of the red emission is realized through the synergistic effect of ultraviolet downconversion and infrared upconversion induced by the 370 nm and 1.54 mu m dual-mode excitation. (C) 2016 Optical Society of America

引用

页码：5314 / 5317

页数：4

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