Title :
Recent progress in sensor materials for fluorescence thermometry
Author_Institution :
Sensor Photonics Res. Center, Toyo Univ., Kawagoe
Abstract :
Various materials, such as spinel (MgAl2O4), garnet (Y3Al5O12), sapphire (Al2O3), YAlO3 and long afterglow phosphors (CaAl2O4, SrAl2O4) crystals and composites of these materials are developed for a highly sensitive thermo-sensor in fluorescence thermometer application. Temperature dependences of photoluminescence (PL) lifetime and/or PL intensity from sensor materials are evaluated using crystals grown by floating zone technique. PL lifetime from sensor materials becomes faster with temperature. PL intensity from sensor materials decreases linearly with temperature. From the temperature dependences of PL, temperature can be measured using these materials as the fluorescence thermo-sensors.
Keywords :
fluorescence; photoluminescence; temperature measurement; temperature sensors; thermometers; zone melting; afterglow phosphors crystals; floating zone technique; fluorescence thermometry; garnet; photoluminescence; sapphire; sensor materials; spinel; thermo-sensor; Composite materials; Crystalline materials; Crystals; Fluorescence; Garnets; Phosphors; Temperature dependence; Temperature measurement; Temperature sensors; Thermal sensors; Fluorescence thermometer; Luminescence; Phosphor; Sensor materials;
Conference_Titel :
Control, Automation and Systems, 2008. ICCAS 2008. International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-89-950038-9-3
Electronic_ISBN :
978-89-93215-01-4
DOI :
10.1109/ICCAS.2008.4694225
