The effect of trap level in the europium doped strontium aluminate (SrAl2O3:Eu2+) phosphors have been evaluated for the fiber-optic thermometer application. Sensitivity and temperature range of the SrAl2O3:Eu2+ phosphor sensor head vary strongly with the trap depth and the trap density of the phosphors. In the temperature ranging from 273 K to 353 K, SrAl2O4:Eu 2+ co-doped with Dy3+ or Nd3+, which have trap depth at around Et=0.5 eV, is powerful sensor material having large temperature coefficient.
CITATION STYLE
Aizawa, H., Toba, E., Katsumata, T., Komuro, S., & Morikawa, T. (2003). Fiber-optic thermometer using strontium aluminate based long afterglow phosphor. In Proceedings of IEEE Sensors (Vol. 2, pp. 92–96). https://doi.org/10.1109/icsens.2003.1278903
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