Journal
JOURNAL OF APPLIED PHYSICS
Volume 115, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4865960
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Funding
- Natural Science Foundation of China [10979027, 21171176, U1232108]
- Postdoctoral Science Foundation of China [2013M531885]
- Guangzhou Science and Technology Project [2013Y2-00118]
- Natural Science Foundation of Guangdong Province [S2013030012842]
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The temperature-dependent photoluminescence properties of efficient red-emitting phosphors NaYTiO4:Pr3+ and NaGdTiO4:Pr3+ are studied. Distinct temperature sensing characteristic of D-1(2) emission is observed. The intensity of D-1(2) emission is almost linearly decreased with the increasing temperature. The quenching process is induced by a low-lying Pr3+-Ti4+ intervalence charge transfer state (IVCT). Because the energies of IVCTs are different for two samples, different temperature sensitive ranges are observed. (C) 2014 AIP Publishing LLC.
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