Optical temperature sensing through the upconversion luminescence from Ho3+/Yb3+ codoped CaWO4

被引：236

作者：

Xu, Wei ^{[1
]}

Zhao, Hua ^{[2
]}

Li, Yaxin ^{[3
]}

Zheng, Longjiang ^{[3
]}

Zhang, Zhiguo ^{[1
,4
]}

Cao, Wenwu ^{[1
,5
]}

机构：

[1] Harbin Inst Technol, Condensed Mater Sci & Technol Inst, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Sch Mat & Engn, Harbin 150001, Peoples R China

[3] Yanshan Univ, Inst Elect Engn, Qinhuangdao 066004, Peoples R China

[4] Harbin Inst Technol, Lab Sono & Phototheranost Technol, Harbin 150001, Peoples R China

[5] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2013年 / 188卷

关键词：

Upconversion; Ho3+ ions; Blue emissions; Temperature sensor; THERMOMETRY; EMISSION; EFFICIENCY;

D O I：

10.1016/j.snb.2013.07.094

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Under 980 nm diode laser excitation, efficient upconversion emissions from the Ho3+/Yb3+ codoped CaWO4 phosphor were obtained. The upconversion quantum efficiency was evaluated to be about 3.3% when the power density of the excitation laser was 47 W/cm(2). Additionally, temperature dependent blue emissions from the F-5(2,3)/K-3(8) and (5)G(6)/F-5(1) states of Ho3+ ions were studied in the range of 303-923 K. The result demonstrated that using the ratio between the blue luminescence intensities of Ho3+ ions, the sensitivity and the accuracy for optical thermometry achieved here are superior to the previously reported Er3+ green fluorescence based optical temperature sensors. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：1096 / 1100

页数：5

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