Temperature luminescence properties of Eu3+-doped Gd2O3 phosphors

Rare earth (RE) oxides are important hosts for the luminescence of RE activators with numerous practical applications in light-emitting devices. In this work, we investigated the possibility for Gd2O3:Eu3+ usage in phosphor thermometry by observing the temperature changes of trivalent europium ion t...

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Bibliographic Details
Published inPhysica scripta Vol. T157; no. 1
Main Authors Nikoli, M G, Al-Juboori, A Z, or evi, V, Drami anin, M D
Format Journal Article
LanguageEnglish
Published IOP Publishing 15.11.2013
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Summary:Rare earth (RE) oxides are important hosts for the luminescence of RE activators with numerous practical applications in light-emitting devices. In this work, we investigated the possibility for Gd2O3:Eu3+ usage in phosphor thermometry by observing the temperature changes of trivalent europium ion transitions from the 5D0 and 5D1 energy levels to the ground-state levels. A set of three samples of Eu3+-doped Gd2O3 (1, 5 and 10 at.% Eu3+) was produced via combustion synthesis. The sample crystalline structure is confirmed by XRD measurements. The intensity ratio of the two emission lines was studied as a function of temperature in the temperature range 300-800 K, and lifetime was measured in the interval 10-800 K. All three Gd2O3:Eu3+ samples proved to have good potential for the development of thermographic phosphors.
ISSN:0031-8949
1402-4896
DOI:10.1088/0031-8949/2013/T157/014056