| Photoluminescence characteristics and energy transfer between Bi~（3＋） and Eu~（3＋） in Na_2O–CaO–GeO_2–SiO_2 glass |
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| 引用本文： | 黎千跃,徐旭辉,张步豪,吴玉梅,邱建备,余雪.Photoluminescence characteristics and energy transfer between Bi~（3＋） and Eu~（3＋） in Na_2O–CaO–GeO_2–SiO_2 glass[J].中国物理 B,2014(12):481-485. |
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| 作者姓名： | 黎千跃 徐旭辉 张步豪 吴玉梅 邱建备 余雪 |
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| 作者单位： | College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China（Grant Nos.11204113 and 61308091）; the Specialized Research Fund for the Doctoral Program of Higher Education of China（Grant No.20115314120001） |
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| 摘 要： | We report the photoluminescence（PL） of Eu^3＋-doped glass with Bi^3＋as a sensitizer. The specific glass system with the strong enhancement of the red emission of Eu3＋is obtained by adding a small number of Bi3＋ions instead of increasing the Eu^3＋ concentration. The emission band of Bi3＋overlaps with the excitation band of Eu^3＋ and the lifetime decay curves,resulting in a very efficient energy transfer from Bi^3＋ to Eu^3＋. The probability of energy transfer is strongly dependent on Bi^3＋ concentration. In addition, the intensity of 4f–4f transition is much stronger than that of a charge-transfer（CT） band in the excitation spectrum, which indicates that the Na2O–Ca O–Ge O2-Si O2 glass is a suitable red-emitting phosphor with high stability as a candidate for light-emitting diodes（LEDs）.
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| 关 键 词： | 能量转移 掺杂玻璃 Eu Bi 发光二极管 光致发光 玻璃体系 衰减曲线 |
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