J. Ballato—contributing editor
Photoluminescence Characteristics of Energy Transfer Between Eu3+and Bi3+in LiEu1−xBix (WO4)0.5(MoO4)1.5
Article first published online: 16 JUL 2009
© 2009 The American Ceramic Society
Journal of the American Ceramic Society
Volume 92, Issue 10, pages 2254–2258, October 2009
How to Cite
Xie, A., Yuan, X., Shi, Y., Wang, F. and Wang, J. (2009), Photoluminescence Characteristics of Energy Transfer Between Eu3+and Bi3+in LiEu1−xBix (WO4)0.5(MoO4)1.5. Journal of the American Ceramic Society, 92: 2254–2258. doi: 10.1111/j.1551-2916.2009.03195.x
This work was supported by the Key Programs for Science and Technology Development of Hubei Province (No. 2005AA105A05).
- Issue published online: 25 SEP 2009
- Article first published online: 16 JUL 2009
- Manuscript No. 25699. Received February 5, 2009; approved May 4, 2009.
A series of novel red phosphors LiEu1−xBix (WO4)0.5(MoO4)1.5 (x=0, 0.05, 0.10, 0.15, 0.20, 0.30, 0.40, and 0.50) were synthesized by the conventional solid-state reaction method. The spectrum and the crystal structure of the phosphors were characterized by Fluorescence spectrophotometry and X-ray diffraction, respectively. The photoluminescent results show that all samples can be excited efficiently by UV (396 nm) and blue (467 nm) light and that they emit red light at 615 nm with line spectra, which are coupled well with the characteristic emissions from UVLED and blue light-emitting diode (LED), respectively. There is an efficient energy transfer from Bi3+ to Eu3+ ions, leading to the emission intensity of Eu3+ being enhanced by 1.5 times, and even more when Bi3+ ions are introduced into LiEu (WO4)0.5(MoO4)1.5. The introduction of Bi3+ ions broadened the excitation band of the phosphor, and the optimum doping concentration is found to be 10 mol% of Bi3+.