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Luminescence Spectra of YGG:RE3+,Bi3+ RE= Eu and Tb) and Energy Transfer from Bi3+ to RE3+ |
| ZHU Nan-Fei1,2; LI Yong-Xiang1;YU Xiao-Feng1,2 |
| 1The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 2000502Postgraduate School of the Chinese Academy of Sciences, Beijing 100049 |
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| Cite this article: |
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ZHU Nan-Fei, LI Yong-Xiang, YU Xiao-Feng 2008 Chin. Phys. Lett. 25 703-706 |
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Abstract We investigate the luminescence properties of Bi3+ and RE3+ (RE = Tb or Eu) in a Y3Ga5O12 (YGG) host system. The additional doping of Bi3+ can enhance the luminescence of Tb3+ or Eu3+ in this host. Energy transfer from Bi3+ to Tb3+ and Eu3+ is observed and the mechanism of energy transfer is investigated. Mechanism of energy transfer can be explained as electric multipole interaction since the Bi3+ emission band and Tb3+ or Eu3+ excitation band overlaps and the Bi3+ emission intensity decreases while the intensity of Tb3+ or Eu3+ increases with the increase of Tb3+ or Eu3+ concentration.
Therefore, Bi3+ ion is a kind of efficient sensitizer to the Tb3+ and Eu3+ activators in the Y3Ga5O12 host.
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| Keywords:
78.55.-m
33.50.Dq
34.70.+e
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Received: 01 January 1900
Published: 30 January 2008
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| PACS: |
78.55.-m
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(Photoluminescence, properties and materials)
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33.50.Dq
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(Fluorescence and phosphorescence spectra)
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34.70.+e
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(Charge transfer)
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