Submicrometre-sized LaPO4:Tb phosphor particles with a spherical shape and filled morphology were prepared by spray pyrolysis from a polymeric precursor solution containing citric acid and ethylene glycol. The LaPO 4: Tb phosphor particles obtained from the aqueous spray solution had a hollow morphology and large size because of the high drying and decomposition rates of droplets. The mean sizes of the particles obtained from the aqueous spray and polymeric precursor solutions were each 1 and 0.8 μm, respectively. The optimum post-treatment temperature for the preparation of LaPO 4:Tb phosphor particles with a spherical shape and high brightness was 1100°C. The prepared LaPO4:Tb phosphor particles had high photoluminescence intensities under vacuum ultraviolet illumination of 147 nm.
|Number of pages||5|
|Journal||Journal of Ceramic Processing Research|
|Publication status||Published - 2007 Dec 14|
- Display material
- Spray pyrolysis
ASJC Scopus subject areas
- Ceramics and Composites