Journal
JOURNAL OF APPLIED PHYSICS
Volume 93, Issue 5, Pages 2946-2951Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1540229
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Dy3+- and Tm3+-doped lanthanum chloride was prepared via reactive atmosphere processing (RAP) of sol-gel derived hydroxide powders. The low-phonon energy chloride host facilitated the 1.3-mum emission from Dy3+ and the 1.2- and 1.4-mum emissions from Tm3+. The emission intensities of the Dy3+ and Tm3+ ions increased logarithmically with increasing RAP temperature. The dependence of emission intensities and lifetimes on the rare-earth (RE) concentration was also investigated. The emission intensity was found to increase up to. 1 mole % RE for both ions. Luminescence quenching was observed for concentrations exceeding 1 mole % for Tm3+ and 0.1 mole % for Dy3+. (C) 2003 American Institute of Physics.
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