| A novel strong green phosphor： K3Gd（PO4）2：Ce^3＋, Tb^3＋ for a UV-excited white light-emitting-diode |
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| 引用本文： | 姜庭明,余雪,徐旭辉,周大成,余红玲,杨鹏辉,邱建备.A novel strong green phosphor： K3Gd（PO4）2：Ce^3＋, Tb^3＋ for a UV-excited white light-emitting-diode[J].中国物理 B,2014,23(2):28505-028505. |
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| 作者姓名： | 姜庭明 余雪 徐旭辉 周大成 余红玲 杨鹏辉 邱建备 |
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| 作者单位： | a College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;b Key Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China |
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| 基金项目： | 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);the National Basic Research Program of China (Grant No.2011CB211708) |
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| 摘 要： | A series of K3Gd1-x-y（PO4）2：xCe^3＋, yTb^3＋ phosphors are synthesized by the solid-sate reaction method. X-ray diffraction and photoluminescence spectra are utilized to characterize the structures and luminescence properties of the as-synthesized phosphors. Co-doping of Ce^3＋ enhances the emission intensity of Tb^3＋ greatly through an efficient energy transfer process from Ce^3＋ to Tb^3＋. The energy transfer is confirmed by photoluminescence spectra and decay time curves analysis. The efficiency and mechanism of energy transfer are investigated carefully. Moreover, due to the non- concentration quenching property of K3Tb（PO4）2, the photoluminescence spectra of K3Tb1-x（PO4）2：xCe^3＋ are studied and the results show that when x = 0.11 the strongest Tb^3＋ green emission can be realized.
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| 关 键 词： | 白色发光二极管 绿色荧光体 PO 紫外线 光致发光光谱 铽 激发 能量转移 |
| 收稿时间： | 2013-05-20 |
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