Enhanced luminescence properties and energy transfer in Ce3+ and Tb3+ co-doped NaCaBO3 phosphor |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;2. Key Lab of Tobacco Chemistry of Yunnan, Yunnan Academy of Tobacco Science, Kunming 650106, Yunnan;3. State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China;1. Department of Chemistry, Jinan University, Guangzhou 510632, China;2. College of Science, South China Agricultural University, Guangzhou 510642, China;1. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, PR China;2. College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China;3. Department of Physics and Interdisciplinary Program of Biomedical, Mechanical & Electrical Engineering, Pukyong National University, Busan 608-737, Republic of Korea;1. School of Energy Research, Xiamen University, Xiamen 361005, China;2. School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen, 361005, China |
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| Abstract: | A series of color-tunable NaCaBO3: Ce3+, Tb3+ phosphors have been synthesized on the basis of efficient Ce3+→Tb3+ energy transfer. The photoluminescence emission and excitation spectra, the lifetime, and the effect of Tb3+ concentration are investigated in detail. The enhanced photoluminescence of Tb3+ with sharp emission lines could be obtained by the broad excitation band from the allowed 4f–5d absorption of Ce3+ ions. The intensity ratio of blue emission from Ce3+ and green emission from Tb3+ can be tuned by adjusting their concentrations. The energy transfer from Ce3+ to Tb3+ in NaCaBO3 was found to be an electric dipole–quadrupole interaction. |
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| Keywords: | Energy transfer Luminescence Color-tunable |
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