Abstract: Electronic energy relaxation and decay dynamics of Eu3+ in Zn2SiO4:Eu3+ phosphors displays evidence of intra-ion energy transfer from the 5D1 to the 5D0 manifold. The energy transfer timescale does not depend on Eu3+ concentration, or the addition of Mn2+ as a co-dopant and is estimated to be about 11 microseconds in Zn2SiO4. Evidence for Eu3+ electronic energy transfer has also been observed in Eu-doped MgS as well as Eu3+ encapsulated in zeolite-Y. The energy transfer timescale in these other materials is shorter than in Zn2SiO4, most likely due to differences in Eu3+ surroundings or site symmetry.
Revised: January 21, 2008 |
Published: October 1, 2007
Citation
Joly A.G., W. Chen, J. Zhang, and S. Wang. 2007.Electronic Energy Relaxation and Luminescence Decay Dynamics of Eu3+ in Zn2SiO4:Eu3+.Journal of Luminescence 126, no. 2:491-496.PNNL-SA-49556.doi:10.1016/j.jlumin.2006.09.004