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Luminescent Properties and Mechanism of Gd1-x-yAlO3Eux,REy |
| LUO Lan1,2;LIU Qing-Feng2;LIU Qian2 |
| 1School of Material Science and Engineering, Nanchang University, Nanchang 330047
2State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 |
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| Cite this article: |
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LUO Lan, LIU Qing-Feng, LIU Qian 2005 Chin. Phys. Lett. 22 131-134 |
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Abstract GAP:Eu,Re(Gd1-x-yAlO3Eux,REy, RE=Pr or Ce) powders were prepared by a nitrate--citrate process. It is found that luminescent intensity decreases when GAP:Eu is co-doped with Pr or Ce. The phenomena of spectra prove that there is a resonant energy transfer between Eu and Pr, by the absorption and emission of lower-energy phonon, and also Ce sensitizer decreases the activator energy level from host→Eu. The two factors are considered to be the main reasons for decrease of the luminescent intensity for the co-doped GAP:Eu,Re.
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| Keywords:
42.70.-a
78.55.-m
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Published: 01 January 2005
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| PACS: |
42.70.-a
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(Optical materials)
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78.55.-m
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(Photoluminescence, properties and materials)
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