Oxygen vacancies play an important role in the luminescence processes of inorganic scintillator materials. In order to study the effects of oxygen vacancies on the luminescence properties of Na3LuSi3O9:Ce3+, these phosphors were prepared using a high temperature solid-state reaction method under different atmosphere and raw materials. It was found that oxygen vacancy had great influence on the absorption, photoluminescence and decay curves of Na3LuSi3O9:Ce3+. The luminescence intensity and peak position showed a regular change when synthesizing atmosphere changed. Na3LuSi3O9:Ce3+ with more oxygen vacancies showed much stronger luminescence intensity at high temperature than that without vacancies. And it was also found that the decreasing of oxygen vacancies can quicken the photoluminescence decay of Ce3+ in Na3LuSi3O9. The existence of oxygen vacancies in Na3LuSi3O9:Ce3+ was confirmed by Zr4+ doping and thermoluminescence emission spectra. At last, emission bands of Ce3+ and oxygen vacancies were well distinguished under X-ray excitation and probable cause of the formation of oxygen vacancies was discussed.

Zhou, J., Zhong, J., Guo, J., Liang, H., Su, Q., Tang, Q., et al. (2016). The Influence of Oxygen Vacancies on Luminescence Properties of Na3LuSi3O9:Ce3+. JOURNAL OF PHYSICAL CHEMISTRY. C, 120(33), 18741-18747 [10.1021/acs.jpcc.6b04964].

The Influence of Oxygen Vacancies on Luminescence Properties of Na3LuSi3O9:Ce3+

MORETTI, FEDERICO;
2016

Abstract

Oxygen vacancies play an important role in the luminescence processes of inorganic scintillator materials. In order to study the effects of oxygen vacancies on the luminescence properties of Na3LuSi3O9:Ce3+, these phosphors were prepared using a high temperature solid-state reaction method under different atmosphere and raw materials. It was found that oxygen vacancy had great influence on the absorption, photoluminescence and decay curves of Na3LuSi3O9:Ce3+. The luminescence intensity and peak position showed a regular change when synthesizing atmosphere changed. Na3LuSi3O9:Ce3+ with more oxygen vacancies showed much stronger luminescence intensity at high temperature than that without vacancies. And it was also found that the decreasing of oxygen vacancies can quicken the photoluminescence decay of Ce3+ in Na3LuSi3O9. The existence of oxygen vacancies in Na3LuSi3O9:Ce3+ was confirmed by Zr4+ doping and thermoluminescence emission spectra. At last, emission bands of Ce3+ and oxygen vacancies were well distinguished under X-ray excitation and probable cause of the formation of oxygen vacancies was discussed.
Articolo in rivista - Articolo scientifico
Physical and Theoretical Chemistry; Electronic, Optical and Magnetic Materials; Surfaces, Coatings and Films; Energy (all)
English
18741
18747
7
Zhou, J., Zhong, J., Guo, J., Liang, H., Su, Q., Tang, Q., et al. (2016). The Influence of Oxygen Vacancies on Luminescence Properties of Na3LuSi3O9:Ce3+. JOURNAL OF PHYSICAL CHEMISTRY. C, 120(33), 18741-18747 [10.1021/acs.jpcc.6b04964].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/149334
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