| 光谱学与光谱分析 |
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| Luminescence Properties of Ba2MgSi2O7∶RE |
| SHI Yan-ning, HE Da-wei*, LIANG Zhong-yi |
| Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China |
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Abstract In the present paper, alkaline earth silicates Ba2MgSi2O7∶RE were prepared under a reducing atmosphere by solid-state reaction. Under UV light excitation, Ce3+ doped pyrosilicates phosphors emit efficient bluish violet light. The emission spectra of Eu2+ doped pyrosilicates phosphors showed that Eu2+ ions could occupy two types of sites in Ba2MgSi2O7 host. The energy transfer from Ce3+ to Eu2+ in Ba2MgSi2O7 is efficient, as there is a large overlap between Ce3+ emission bands and Eu2+ excitation bands. Analysis of the spectra of Ce3+ and Tb3+ co-doped phosphor indicated the existence of energy transfer from Ce3+ to Tb3+ in Ba2MgSi2O7 under UV excitation.
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Received: 2005-01-26
Accepted: 2005-06-16
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Corresponding Authors:
HE Da-wei
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