Up-conversion luminescence and optical thermometry properties of transparent glass ceramics containing CaF2:Yb3+/Er3+ nanocrystals

被引：77

作者：

Cai, Jiajia ^{[1
]}

Wei, Xiantao ^{[1
]}

Hu, Fangfang ^{[1
]}

Cao, Zhongmin ^{[1
]}

Zhao, Lu ^{[1
]}

Chen, Yonghu ^{[1
]}

Duan, Changkui ^{[1
]}

Yin, Min ^{[1
]}

机构：

[1] Chinese Acad Sci, Univ Sci & Technol China, Sch Phys Sci, Key Lab Strongly Coupled Quantum Matter Phys, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Caf(2):Yb3+/Er3+ glass ceramics; Energy transfer process; Power dependence; Tunable emission; Optical thermometry; NANOPARTICLES; FABRICATION; EMISSIONS; CRYSTALS; ER3+;

D O I：

10.1016/j.ceramint.2016.06.002

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：

A series of Yb3+/Er3+ codoped transparent oxyfluoride glass ceramics with various amounts of Yb3+ have been successfully fabricated and characterized. Under 980 nm laser prompting, the samples produce intense red, green and blue up-conversion emissions, and the emission intensities increase with Yb3+ concentration and heat treatment temperature. Before losing good transparency in the visible region, optimum emission intensities are obtained for the sample with 25 mol% of Yb3+ at a heat treatment temperature of 680 degrees C. A possible up-conversion mechanism is proposed from the dependence of emission intensities on pumping power. The fluorescence intensity ratio between the two thermally coupled levels H-2(11/2) versus S-4(3/2) was measured with the laser output power of 57 mW to avoid the possible laser induced heating effect. The fluorescence intensity ratio values in the temperature range from 295 K to 723 K can be well fitted with the equation: A exp (-Delta E/k(B)T), where A = 6.79 and Delta E=876 cm(-1). The relative temperature sensitivity at 300 K was evaluated to be 1.4% K-1. All the results suggest that the Yb3+/Er3+ codoped CaF2 glass ceramics is an efficient up-conversion material with potential in optical fiber temperature sensing. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：13990 / 13995

页数：6

共 25 条

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