Abstract
Ce3+ and Eu3+ ions were simultaneously incorporated into a SiO2 matrix by a sol-gel process, resulting in a phosphor that could be used in applications such as fluorescent lamps, solid state lasers, optical waveguides and field emission displays. Variation between blue and red emissions was obtained when co-doped SiO2: Ce,Eu powders with concentrations ranging from 0 to 5 mol% were exposed to ultraviolet light. An enhanced photoluminescence (PL) intensity from Ce3+, probably due to energy transfer from Eu3+, was observed for activator concentrations ranging from 0 to 1 mol%. Comparatively low PL intensities, especially from Ce3+, associated with concentration-quenching were observed for activator concentrations in the range of 2-5 mol%.
Original language | English |
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Pages (from-to) | 458-461 |
Number of pages | 4 |
Journal | Surface and Interface Analysis |
Volume | 38 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2006 |
Externally published | Yes |
Keywords
- Energy transfer
- Phosphors
- Photoluminescence
ASJC Scopus subject areas
- General Chemistry
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry