Thermoluminescence of a mixed rare earth phosphate powder La1−x−yCexTbyPO4

Philibert Iacconi 1, * Michel Junker 2, 3, 4 Bernard Guilhot 2, 3, 4 Denis Huguenin 5
* Corresponding author
1 LPES - Laboratoire de Physique Electronique des Solides
2 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
3 P2MC-ENSMSE - Département Poudres et Matériaux Multi-Composants
4 LPMG-EMSE - Laboratoire des Procédés en Milieux Granulaires
5 Rhodia
Abstract : The properties of thermoluminescence (TL) observed from various mixed rare earth (RE) phosphate powders La1−x−yCexTbyPO4 are reported. TL peaks appear around −175°C, −135°C, −80°C, −35°C and +25°C and the TL emission spectra of La1−x−yCexTbyPO4 are mainly composed of characteristic line transitions of Tb3+ ions. The results show that the co-doping with Ce3+ is not required to observe the TL emission of Tb3+. A model for the recombination mechanisms of the various TL peaks is discussed.
Keywords : Rare earth phosphate Thermoluminescence Luminophors
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Philibert Iacconi, Michel Junker, Bernard Guilhot, Denis Huguenin. Thermoluminescence of a mixed rare earth phosphate powder La1−x−yCexTbyPO4. Optical Materials, Elsevier, 2001, 17 (3), pp.409-414. ⟨10.1016/S0925-3467(00)00104-X⟩. ⟨emse-00527303⟩

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