Abstract
Electronic energy relaxation and decay dynamics of Eu3+ in Zn2SiO4:Eu3+ phosphors display 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 μs in Zn2SiO4. Evidence for intra-ion 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.
Original language | English (US) |
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Pages (from-to) | 491-496 |
Number of pages | 6 |
Journal | Journal of Luminescence |
Volume | 126 |
Issue number | 2 |
DOIs | |
State | Published - Oct 2007 |
Externally published | Yes |
Keywords
- Energy transfer
- Eu
- Intra-state
- Luminescence
- Nanoparticles
- Phosphors
- Relaxation dynamics
ASJC Scopus subject areas
- Biophysics
- Atomic and Molecular Physics, and Optics
- General Chemistry
- Biochemistry
- Condensed Matter Physics