Journal
PHYSICA B-CONDENSED MATTER
Volume 481, Issue -, Pages 197-203Publisher
ELSEVIER
DOI: 10.1016/j.physb.2015.11.017
Keywords
NaGdTiO4; Luminescence property; Energy transfer; Concentration quenching; Colorimetric performance
Categories
Funding
- NSFC (National Natural Science Foundation of China) [11374044, 11104023]
- Natural Science Foundation of Liaoning Province [2015020190]
- Open Fund of the State Key Laboratory on Integrated Optoelectronics [IOSKL2015KF27]
- Fundamental Research Funds for the Central Universities [3132014087, 3132014327]
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Sm3+ single-doped and Sm3+, Dy3+ co-doped NaGdTiO4 phosphors were synthesized via a traditional high temperature solid-state reaction method. The crystal structure was characterized by means of x-ray diffraction. The luminescence properties and energy transfer in Sm3+ single-doped and Sm3+, Dy3+ co-doped NaGdTiO4 phosphors were systematically studied. The electric dipole-dipole interaction between Sm3+ ions was identified as the main mechanism for the concentration dependent fluorescence quenching in Sm3+ single-doped samples. It is confirmed that there is almost no energy transfer between Sm3+ and Dy3+ in Sm3+, Dy3+ co-doped samples. The introduction of Sm3+ can compensate the red emission component and adjust the colorimetric performance of Dy3+-doped NaGdTiO4 phosphors. Moreover, different emitting colors can be obtained from Sm3+, Dy3+ co-doped NaGdTiO4 phosphor by changing the excitation pathway. (C) 2015 Elsevier B.V. All rights reserved.
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