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Spatially Resolved Temperature Distribution in a Rare-Earth-Doped Transparent Glass-Ceramic
Ivan Sedmak1, Rok Podlipec2,3, Iztok Urbančič3
1Laboratory for Thermal Technology (LTT), Faculty of Mechanical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia.
Sensors (Basel, Switzerland)
|March 10, 2022
Summary
A new fluorescence microscopy technique non-invasively images temperature distributions in transparent glass-ceramics. This method provides micrometer resolution for analyzing thermal processes in materials like those used in advanced solar cells.
Area of Science:
- Materials Science
- Optical Engineering
- Heat Transfer
Background:
- Accurate temperature distribution analysis is vital for heat transfer in engineering fields like photovoltaics and microelectronics.
- Multilayer materials require precise thermal characterization for performance optimization.
Purpose of the Study:
- To develop and demonstrate a novel fluorescence technique for non-invasive, high-resolution temperature imaging.
- To analyze local temperature distributions within transparent, temperature-sensitive glass-ceramics.
Main Methods:
- Utilized a novel fluorescence technique with a high-resolution fluorescence microscopy system.
- Employed multi-focal plane measurements along the z-axis for axial temperature reconstruction.
- Investigated a transparent, co-doped Er:GPF1Yb0.5Er glass-ceramic sample (500-µm thick).
Main Results:
- Achieved micrometer spatial resolution for temperature imaging.
- Successfully reconstructed the 3D temperature distribution across the glass-ceramic sample.
- Experimental measurements showed strong agreement with computer-modeled heat simulations.
Conclusions:
- The developed fluorescence technique enables precise, non-invasive thermal analysis of optically transparent materials.
- This method is suitable for studying local thermal processes at micron and sub-micron levels.
- Potential applications include analyzing temperature distributions in transparent layers of advanced solar cells.
