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Sensors 2017, 17(6), 1253;

A Point Temperature Sensor Based on Upconversion Emission in Er3+/Yb3+ Codoped Tellurite-Zinc-Niobium Glass

College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China
Author to whom correspondence should be addressed.
Received: 9 April 2017 / Revised: 17 May 2017 / Accepted: 22 May 2017 / Published: 31 May 2017
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Er3+/Yb3+ codoped tellurite-zinc-niobium (TZNb) glass was prepared by the melt-quenching method and used for the construction of a point all-fiber temperature sensor. The glass thermal stability and network structural properties were studied by differential thermal analysis and Raman spectrum, respectively. High glass transition temperature is beneficial to widen the working temperature range. The dependence of fluorescence intensity ratio (FIR) of green upconversion emissions on the surrounding temperature from 276 to 363 K was experimentally investigated and the maximum temperature sensitivity is 95 × 10−4 K−1 at 363 K. Strong green upconversion emission, broad temperature measurement range and high sensitivity indicate this point temperature sensor is a promising optical device for application on optical temperature sensing. View Full-Text
Keywords: temperature sensing; upconversion emission; tellurite-zinc-niobium glass temperature sensing; upconversion emission; tellurite-zinc-niobium glass

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Wu, T.; Tong, R.; Liao, L.; Huang, L.; Zhao, S.; Xu, S. A Point Temperature Sensor Based on Upconversion Emission in Er3+/Yb3+ Codoped Tellurite-Zinc-Niobium Glass. Sensors 2017, 17, 1253.

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