研究目的
The study aims to investigate the temperature dependence of the visible luminescence of a fluorotellurite glass doped with Sm3+ ions for use as a high temperature sensing probe.
研究成果
The study successfully demonstrated the use of Sm3+-doped fluorotellurite glass as a high-temperature optical sensor, with a maximum thermal sensitivity at 640 K. The structural and optical characterizations provided insights into the local environment of Sm3+ ions and the material's potential for sensing applications.
研究不足
The study is limited by the temperature range (300 to 650 K) and the specific composition of the fluorotellurite glass doped with Sm3+ ions. The sensitivity and performance of the sensor may vary with different dopant concentrations or glass matrices.
1：Experimental Design and Method Selection:
The study involved measuring the emission intensities of Sm3+ ions in a fluorotellurite glass across a temperature range from 300 to 650 K using the fluorescence intensity ratio technique.
2：Sample Selection and Data Sources:
The glass samples were doped with
3：5 mol% of Sm3+ ions. List of Experimental Equipment and Materials:
Equipment included a spectrophotometer (Perkin Elmer Lambda 9), a tubular electric furnace, a type K thermocouple, a voltmeter (Fluke Calibrator 714), a diode pumped solid state laser (Optronics), a single grating spectrometer (Andor SR-3031-B), and a CCD detector (Newton DU920N). Materials included TeO2, PbF2, AlF3, and SmF
4：Experimental Procedures and Operational Workflow:
The luminescence measurements were carried out by heating the samples at a rate of 1 K/min, with temperature controlled by a thermocouple. Emission spectra were acquired every 300 s.
5：Data Analysis Methods:
The data were analyzed using the Judd-Ofelt theory to calculate parameters and the fluorescence intensity ratio technique for temperature calibration.
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