Spatially Resolved Temperature Distribution in a Rare-Earth-Doped Transparent Glass-Ceramic

Sensors

Michel Mortier¹  Rok Podlipec²  Iztok Golobič³  Ivan Sedmak³  Iztok Urbančič⁴  Janez Štrancar⁴ 

[1] Chimie ParisTech, Institute de Recherche de Chimie Paris, PSL Research University, 75005 Paris, France;Ion Beam Center, Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstrasse 400, 01328 Dresden, Germany;Laboratory for Thermal Technology (LTT), Faculty of Mechanical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia;Laboratory of Biophysics, Department of Solid State Physics, Jožef Stefan Institute, 1000 Ljubljana, Slovenia;

关键词: temperature-dependent fluorescence;    co-doped glass-ceramic;    axial temperature distribution;    micro-scale temperature measurements;   

DOI  :  10.3390/s22051970

来源: DOAJ

【 摘 要 】

Knowing the temperature distribution within the conducting walls of various multilayer-type materials is crucial for a better understanding of heat-transfer processes. This applies to many engineering fields, good examples being photovoltaics and microelectronics. In this work we present a novel fluorescence technique that makes possible the non-invasive imaging of local temperature distributions within a transparent, temperature-sensitive, co-doped Er:GPF1Yb0.5Er glass-ceramic with micrometer spatial resolution. The thermal imaging was performed with a high-resolution fluorescence microscopy system, measuring different focal planes along the z-axis. This ultimately enabled a precise axial reconstruction of the temperature distribution across a 500-µm-thick glass-ceramic sample. The experimental measurements showed good agreement with computer-modeled heat simulations and suggest that the technique could be adopted for the spatial analyses of local thermal processes within optically transparent materials. For instance, the technique could be used to measure the temperature distribution of intermediate, transparent layers of novel ultra-high-efficiency solar cells at the micron and sub-micron levels.

【 授权许可】

Unknown