Abstract
(Gd(x)Y(1)-(x))2O3:Eu [x = 0, 0.25, 0.5, 0.75, 1.0] phosphor particles with 6 at.% Eu dopant of total concentration were prepared using spray pyrolysis. The effects of composition on the morphology, crystallinity, and photoluminescence characteristics of composite particles were investigated. The morphological control of (Gd(x)Y(1)-(x))2O3:Eu particles in spray pyrolysis was also attempted by using colloidal and aqueous solutions. The particles prepared from colloidal solutions containing small amounts of Gd or Y hydroxy carbonate sol as seed material had spherical and filled morphology after the post-treatment at high temperature. On the other hand, the (Gd(x)Y(1)-(x))2O3:Eu particles prepared from aqueous solutions were hollow and porous after post-treatment in all compositions. Particles prepared from colloidal solutions had photoluminescence emission intensities higher than those of particles prepared from aqueous solutions. (C) 2000 Academic Press.
Original language | English |
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Pages (from-to) | 195-199 |
Number of pages | 5 |
Journal | Journal of Colloid and Interface Science |
Volume | 228 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2000 Aug 15 |
Externally published | Yes |
Keywords
- Gadolinium oxide
- Phosphor particle
- Spray pyrolysis
- Yttrium oxide
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Surfaces, Coatings and Films
- Colloid and Surface Chemistry