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Effects of Er3+ concentration on down-/up-conversion luminescence and temperature sensing properties in NaGdTiO4: Er3+/Yb3+ phosphors.
- Source :
-
Ceramics International . Oct2016, Vol. 42 Issue 13, p14710-14715. 6p. - Publication Year :
- 2016
-
Abstract
- Usually, Er 3+ doping concentration effect on the temperature sensing properties of Er 3+ containing materials is ignored. In this work, we demonstrated the influence of Er 3+ concentration and excitation path on the spectral and temperature sensing properties in Er 3+ , Yb 3+ co-doped NaGdTiO 4 system. The NaGdTiO 4 : Er 3+ /Yb 3+ phosphors were prepared by a high temperature solid state reaction method. Different spectral patterns for down- and up-conversion processes were observed and ascribed to the different excitation and population routes. The concentration quenching behaviors for down- and up-conversion processes were explained via cross relaxations between Er 3+ ions. Most importantly, the Er 3+ concentration dependent optical temperature sensing performance was observed and experimentally explained as a fact that the optical transition rate of Er 3+ in different samples was changed with various Er 3+ doping concentration. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 42
- Issue :
- 13
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 116864889
- Full Text :
- https://doi.org/10.1016/j.ceramint.2016.06.096