A novel red-emitting phosphor, CaYAl3O7: Eu3+, Sm3+, is synthesized by a combustion method at a low temperature (850 degrees C), and the single phase of CaYAl3O7 is confirmed by powder X-ray diffraction measurements. The photoluminescence property results reveal that the red emission intensity of Eu3+ is strongly dependent on the Sm3+ concentration. Only the Eu3+ luminescence is detected in the Eu3+-Sm3+ co-doped CaYAl3O7 phosphor with 393 nm excitation. However, under the characteristic excitation (402 nm) of Sm3+, not only the Sm3+ emission but also the Eu3+ emission are observed. A possible mechanism of the energy transfer between Sm3+ and Eu3+ is investigated in detail.
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College of Materials Science and Engineering, Kunming University of Science and TechnologyCollege of Materials Science and Engineering, Kunming University of Science and Technology
余红玲
余雪
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College of Materials Science and Engineering, Kunming University of Science and TechnologyCollege of Materials Science and Engineering, Kunming University of Science and Technology
余雪
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徐旭辉
焦清
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College of Materials Science and Engineering, Kunming University of Science and TechnologyCollege of Materials Science and Engineering, Kunming University of Science and Technology
焦清
姜庭明
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College of Materials Science and Engineering, Kunming University of Science and TechnologyCollege of Materials Science and Engineering, Kunming University of Science and Technology
姜庭明
刘雪娥
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College of Materials Science and Engineering, Kunming University of Science and TechnologyCollege of Materials Science and Engineering, Kunming University of Science and Technology
刘雪娥
周大成
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College of Materials Science and Engineering, Kunming University of Science and TechnologyCollege of Materials Science and Engineering, Kunming University of Science and Technology
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Indian Inst Technol, Opt Mat & Bioimaging Res Lab, Indian Sch Mines, Dhanbad 826004, Bihar, IndiaIndian Inst Technol, Opt Mat & Bioimaging Res Lab, Indian Sch Mines, Dhanbad 826004, Bihar, India
Tiwari, S. P.
Kumar, A.
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Indian Inst Technol, Opt Mat & Bioimaging Res Lab, Indian Sch Mines, Dhanbad 826004, Bihar, IndiaIndian Inst Technol, Opt Mat & Bioimaging Res Lab, Indian Sch Mines, Dhanbad 826004, Bihar, India
Kumar, A.
Singh, S.
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Indian Inst Technol, Opt Mat & Bioimaging Res Lab, Indian Sch Mines, Dhanbad 826004, Bihar, IndiaIndian Inst Technol, Opt Mat & Bioimaging Res Lab, Indian Sch Mines, Dhanbad 826004, Bihar, India
Singh, S.
Kumar, K.
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Indian Inst Technol, Opt Mat & Bioimaging Res Lab, Indian Sch Mines, Dhanbad 826004, Bihar, IndiaIndian Inst Technol, Opt Mat & Bioimaging Res Lab, Indian Sch Mines, Dhanbad 826004, Bihar, India