Up-conversion luminescence and optical temperature sensing behaviour of Yb3+/Er3+ codoped CaWO4 material

被引：90

作者：

Cheng, Xuerui ^{[1
]}

Yang, Kun ^{[1
]}

Wang, Jiankun ^{[1
]}

Yang, Linfu ^{[1
]}

Cheng, Xiaoshuai ^{[1
]}

机构：

[1] Zhengzhou Univ Light Ind, Sch Phys & Elect Engn, Zhengzhou 450002, Henan, Peoples R China

来源：

OPTICAL MATERIALS | 2016年 / 58卷

关键词：

Upconversion emission; Power dependence; FIR technique; Sensor sensitivity; PHOSPHATE-GLASS; NANOCRYSTALS; NANOPARTICLES; EMISSIONS; ROUTE; GREEN; GD; CA;

D O I：

10.1016/j.optmat.2016.06.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Present article report on structural and optical properties of Er3+/Yb3+ codoped CaWO4 phosphors. Structural properties are explored using XRD and Raman technologies. The upconversion emission has been investigated with 980 nm excitation. The upconversion emission intensity is dependent on the concentrations of Yb3+ ions and reaches a maximum at 7%. Logarithmic plots of power dependencies reveal that the green and red emissions originate from a two-photon upconversion process. Based on the photon energy and the emission spectra, the possible upconversion processes and emission mechanisms are discussed. Finally, the optical temperature sensing properties has been performed using the fluorescence intensity ratio technique based on green upconversion emissions. Its temperature sensitivity is found to be above 0.0025 K-1 in the whole temperature range of 300-540 K, revealing this phosphor to be a promising optical temperature sensing material. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：449 / 453

页数：5

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