| 光谱学与光谱分析 |
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| Preparation and Study on the Spectral Properties of SrBPO5∶Dy3+ Phosphor |
| YANG Yong1,2, HAN Yue1, GUAN Li2*, WANG Hao-yan2, LI Xu2*, TENG Feng2 |
1. Key Laboratory of Road Safety Ministry of Communications, Research Institute of Highway Ministry of Transport, Beijing 100088, China
2. Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China |
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Abstract A series of SrBPO5∶Dy3+ phosphor used for UV excited white LEDs were synthesized with high temperature solid state method. The XRD patterns and luminescent properties were investigated. The results indicated that the sample was single SrBPO5 phase. The emission spectrum included two emission peaks locating at 485 and 575 nm excited by 388 nm UV light. The influence of Dy3+ ions concentration, Mg2+ ions dosage, sintering temperature and charge compensator on the luminescent properties was studied. The emission intensity reaches the maximum when the concentration of Dy3+ ions is 4 mol%; the ratio of B/Y increases with the amount of Mg2+ ions and Na+ is the optimal charge compensation. The results showed that this phosphor has a stronger yellow peak, which can raise the yellow emission and enhance the ability of penetrating haze of UV based high transmission white LED.
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Received: 2015-07-31
Accepted: 2016-01-05
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Corresponding Authors:
GUAN Li, LI Xu
E-mail: lixcn@sina.com; lguan@hbu.cn
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