*Member, The American Ceramic Society.
Synthesis of BaSi2O2N2:Ce3+,Eu2+ Phosphors and Determination of their Luminescence Properties
Article first published online: 29 SEP 2010
© 2010 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 2, pages 501–507, February 2011
How to Cite
Song, X., Fu, R., Agathopoulos, S., He, H., Zhao, X. and Yu, X. (2011), Synthesis of BaSi2O2N2:Ce3+,Eu2+ Phosphors and Determination of their Luminescence Properties. Journal of the American Ceramic Society, 94: 501–507. doi: 10.1111/j.1551-2916.2010.04092.x
J. Ferreira—contributing editor
- Issue published online: 7 FEB 2011
- Article first published online: 29 SEP 2010
- Manuscript No. 27163. Received November 26, 2009; approved July 27, 2010.
BaSi2O2N2:Ce3+,Eu2+ phosphors were successfully synthesized via the solid-state reaction method. Their luminescence properties were experimentally investigated and qualify them for further consideration as components in white light-emitting diodes. In particular, BaSi2O2N2:Eu2+ phosphors have an efficient bluish–green emission band that peaks at 490 nm. Ce3+-doped BaSi2O2N2 showed a bright emission band at 390 nm. A red shift tuning capability of emission bands was achieved by increasing the Eu2+ or Ce3+ contents. Measurements of the intensity of emission spectra suggested a concentration quenching effect for both Eu2+ and Ce3+. Analysis of the experimental results suggests that the enhancement of emission intensity in the produced codoped BaSi2O2N2:Ce3+,Eu2+ phosphors is due to resonance-type energy transfer from Ce3+ to Eu2+ ions, which is predominantly governed by dipole–dipole interaction mechanism. The efficiency of energy transfer was calculated and the critical distance of energy transfer between Ce3+ and Eu2+ was determined as ∼25 Å.