In recent years trivalent rare earth doped materials have received significant attention for optical temperature sensors. In these materials ratio of fluorescence emissions from different energy levels exhibit strong temperature dependence. Synthesized Y2O3:Yb,Tm and Y2O3:Yb,Ho powders were obtained via spray pyrolysis at 900 °C using 0.1 M nitrate precursor. Using laser excitation at 978 nm we investigated upconversion emission of these powders and recorded characteristic transitions: 1D2→3F4, 1G4→3H6, 1G4→3F4, 3F2,3→3H6, 1D2→3F3, 1G4→3H6, 3H4→3H6 for Tm3+ and 5F4, 5S2→5I8, 5F5→5I8, 5F4, 5S2→5I7 for Ho3+. Further we analyzed temperature dependence of fluorescence intensity ratios of different Stark components in the range from 10K to 300K. Several of these ratios exhibit significant temperature sensitivity, with the largest value of 0.08 K-1.
Keywords:
optical temperature sensors / rare earths / doping / fluorescence
Source:
2nd International Conference on Optical, Electronic and Electrical Materials, 5-7 August 2012, Shanghai, China, 2012
TY - CONF
AU - Lojpur, Vesna
AU - Nikolić, Marko G.
AU - Medić, Mina
AU - Mančić, Lidija
AU - Milošević, Olivera
AU - Dramićanin, Miroslav
PY - 2012
UR - http://dais.sanu.ac.rs/123456789/509
AB - In recent years trivalent rare earth doped materials have received significant attention for optical temperature sensors. In these materials ratio of fluorescence emissions from different energy levels exhibit strong temperature dependence. Synthesized Y2O3:Yb,Tm and Y2O3:Yb,Ho powders were obtained via spray pyrolysis at 900 °C using 0.1 M nitrate precursor. Using laser excitation at 978 nm we investigated upconversion emission of these powders and recorded characteristic transitions: 1D2→3F4, 1G4→3H6, 1G4→3F4, 3F2,3→3H6, 1D2→3F3, 1G4→3H6, 3H4→3H6 for Tm3+ and 5F4, 5S2→5I8, 5F5→5I8, 5F4, 5S2→5I7 for Ho3+. Further we analyzed temperature dependence of fluorescence intensity ratios of different Stark components in the range from 10K to 300K. Several of these ratios exhibit significant temperature sensitivity, with the largest value of 0.08 K-1.
C3 - 2nd International Conference on Optical, Electronic and Electrical Materials, 5-7 August 2012, Shanghai, China
T1 - Low temperature sensitivity of upconversion emission in Y2O3:Yb,Tm and Y2O3:Yb,Ho powders
ER -
@conference{
author = "Lojpur, Vesna and Nikolić, Marko G. and Medić, Mina and Mančić, Lidija and Milošević, Olivera and Dramićanin, Miroslav",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/509",
abstract = "In recent years trivalent rare earth doped materials have received significant attention for optical temperature sensors. In these materials ratio of fluorescence emissions from different energy levels exhibit strong temperature dependence. Synthesized Y2O3:Yb,Tm and Y2O3:Yb,Ho powders were obtained via spray pyrolysis at 900 °C using 0.1 M nitrate precursor. Using laser excitation at 978 nm we investigated upconversion emission of these powders and recorded characteristic transitions: 1D2→3F4, 1G4→3H6, 1G4→3F4, 3F2,3→3H6, 1D2→3F3, 1G4→3H6, 3H4→3H6 for Tm3+ and 5F4, 5S2→5I8, 5F5→5I8, 5F4, 5S2→5I7 for Ho3+. Further we analyzed temperature dependence of fluorescence intensity ratios of different Stark components in the range from 10K to 300K. Several of these ratios exhibit significant temperature sensitivity, with the largest value of 0.08 K-1.",
journal = "2nd International Conference on Optical, Electronic and Electrical Materials, 5-7 August 2012, Shanghai, China",
title = "Low temperature sensitivity of upconversion emission in Y2O3:Yb,Tm and Y2O3:Yb,Ho powders"
}
Lojpur V, Nikolić MG, Medić M, Mančić L, Milošević O, Dramićanin M. Low temperature sensitivity of upconversion emission in Y2O3:Yb,Tm and Y2O3:Yb,Ho powders. 2nd International Conference on Optical, Electronic and Electrical Materials, 5-7 August 2012, Shanghai, China. 2012;
Lojpur, V., Nikolić, M. G., Medić, M., Mančić, L., Milošević, O.,& Dramićanin, M. (2012). Low temperature sensitivity of upconversion emission in Y2O3:Yb,Tm and Y2O3:Yb,Ho powders.
2nd International Conference on Optical, Electronic and Electrical Materials, 5-7 August 2012, Shanghai, China, null.
Lojpur Vesna, Nikolić Marko G., Medić Mina, Mančić Lidija, Milošević Olivera, Dramićanin Miroslav, "Low temperature sensitivity of upconversion emission in Y2O3:Yb,Tm and Y2O3:Yb,Ho powders" null (2012)
