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Characterization and luminescence of Eu/Sm-coactivated CaYAl3O7 phosphor synthesized by using a combustion method |
Yu Hong-Ling (余红玲), Yu Xue (余雪), Xu Xu-Hui (徐旭辉), Jiang Ting-Ming (姜庭明), Yang Peng-Hui (杨鹏辉), Jiao Qing (焦清), Zhou Da-Cheng (周大成), Qiu Jian-Bei (邱建备) |
College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China Key Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China |
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Abstract A novel red-emitting phosphor, CaYAl3O7: Eu3+, Sm3+, is synthesized by a combustion method at a low temperature (850℃), 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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Received: 01 March 2013
Revised: 13 March 2013
Accepted manuscript online:
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PACS:
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85.60.Jb
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(Light-emitting devices)
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78.55.Bq
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(Liquids)
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78.55.Hx
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(Other solid inorganic materials)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11204113, 61265004, and 51272097), the Foundation of Application Research of Yunnan Province, China (Grant No. 2011FB022), the Chinese Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20115314120001), the Postdoctoral Science Foundation of China (Grant No. 2011M501424), and the National Basic Research Program of China (Grant No. 2011CB211708). |
Corresponding Authors:
Qiu Jian-Bei
E-mail: qiu@kmust.edu.cn
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Cite this article:
Yu Hong-Ling (余红玲), Yu Xue (余雪), Xu Xu-Hui (徐旭辉), Jiang Ting-Ming (姜庭明), Yang Peng-Hui (杨鹏辉), Jiao Qing (焦清), Zhou Da-Cheng (周大成), Qiu Jian-Bei (邱建备) Characterization and luminescence of Eu/Sm-coactivated CaYAl3O7 phosphor synthesized by using a combustion method 2013 Chin. Phys. B 22 098503
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