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Low-doped LaVO4:Eu3+ phosphor for multimode optical thermal sensing
Ilya E Kolesnikov1, Daria V Mamonova1, Mikhail A Kurochkin1
1St. Petersburg State University, Universitetskaya nab. 7-9, 199034, St. Petersburg, Russia. ie.kolesnikov@gmail.com.
Physical Chemistry Chemical Physics : PCCP
|November 14, 2022
Summary
This study introduces a new optical thermometer using europium-doped lanthanum orthovanadate (LaVO4:Eu3+). This advanced material enables precise, non-contact temperature measurements across a wide range, proving useful where traditional methods fail.
Area of Science:
- Materials Science
- Optical Thermometry
- Luminescence
Background:
- Traditional thermometers have limitations in contactless and non-invasive temperature sensing.
- Optical thermometers leverage luminescence parameters for temperature measurement.
- Multimode sensors offer broader working ranges and improved reliability.
Purpose of the Study:
- To develop and evaluate a novel multimode optical thermometer.
- To utilize europium-doped lanthanum orthovanadate (LaVO4:Eu3+) as a thermal sensor.
- To assess various sensing strategies for optimal thermometric performance.
Main Methods:
- Synthesized and characterized Eu3+-doped LaVO4 phosphor.
- Investigated luminescence properties across a wide temperature range (98-723 K).
- Assessed different thermal sensing strategies, comparing sensitivity and resolution.
Main Results:
- LaVO4:Eu3+ demonstrated effective thermal sensing from 98 K to 723 K.
- Achieved excellent thermometric performance with relative sensitivity (Sr) of 1.49% K-1 and temperature resolution (ΔT) of 0.6 K at room temperature.
- Identified optimal sensing strategies for enhanced reliability and measurement range.
Conclusions:
- Eu3+-doped LaVO4 phosphor is a highly promising material for multimode optical thermometry.
- The developed sensor offers a reliable and non-invasive solution for temperature measurements in challenging environments.
- Further research can explore applications in various scientific and industrial fields requiring precise temperature monitoring.
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