Title :
Remote high temperature electro-optical sensing using YVO4 :Dy3+ thermographic phosphors
Author :
Bugos, A.R. ; Allison, S.W. ; Dowell, L.J. ; Gillies, G.T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Tennessee Univ., Knoxville, TN, USA
Abstract :
The fluorescent properties of dysprosium-doped yttrium vanadate (YVO4:Dy3+) phosphors in powder form for potential use in remote high-temperature sensing applications are investigated. A fluorescence lifetime decay versus temperature calibration curve is presented and has been calibrated against US National Bureau of Standards temperature calibration instruments. The research shows that dysprosium-doped yttrium vanadate thermographic phosphors have a specified temperature sensing range from 325°C to 400°C. The technique used for making temperature measurements and for obtaining calibration curves of YVO4:Dy3+ is discussed. In addition, emphasis is placed on the application of thermographic phosphor measurements in the industrial domain and in laboratory research
Keywords :
calibration; dysprosium; fluorescence; high-temperature techniques; luminescence of inorganic solids; phosphors; radiative lifetimes; spectral methods of temperature measurement; thermo-optical effects; yttrium compounds; 325 to 400 degC; YVO4:Dy3+ thermographic phosphors; calibration curve; electro-optical sensing; fluorescence lifetime decay; fluorescent properties; remote high-temperature sensing; temperature measurements; temperature sensing range; Calibration; Fluorescence; Instruments; NIST; Phosphors; Powders; Temperature distribution; Temperature measurement; Temperature sensors; Yttrium;
Conference_Titel :
Southeastcon '90. Proceedings., IEEE
Conference_Location :
New Orleans, LA
DOI :
10.1109/SECON.1990.117944
