Abstract
(Y1-xGdx)2O3:Eu phosphor particles with dense morphology were prepared by flame spray pyrolysis and the effect of LiCl flux on the crystallinity, morphology, and photo-luminescence characteristics of the particles was investigated. All as-prepared particles had monoclinic phase regardless of flux and had different luminescence characteristics from those of commercial Y2O3:Eu particles of cubic phase. The addition of LiCl flux reduced the post-treatment temperature by 300 °C for phase transformation from the monoclinic phase to the cubic phase. The post-treatment temperature of (Y0.75Gd0.25)2O3:Eu particles for phase transformation decreased from 1100 °C to 700 °C when LiCl flux was used. The morphology of the particles was also influenced by the Y/Gd ratio and the LiCl flux. The as-prepared particles had spherical shape and nonaggregation characteristics regardless of Y/Gd ratio and flux. The sphericity of the as-prepared particles prepared without flux was maintained after post-treatment for phase transformation in all Y/Gd ratios. However, LiCl addition promoted the aggregation between product particles. The prepared particles had high photoluminescence intensities comparable to that of the commercial product.
| Original language | English |
|---|---|
| Pages (from-to) | 659-663 |
| Number of pages | 5 |
| Journal | Applied Physics A: Materials Science and Processing |
| Volume | 77 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2003 Oct 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
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The synthesis of (Y1-xGdx)2O3:Eu phosphor particles by flame spray pyrolysis with LiCl flux. / Seo, D. J.; Kang, Yun Chan; Park, S. B.
In: Applied Physics A: Materials Science and Processing, Vol. 77, No. 5, 01.10.2003, p. 659-663.Research output: Contribution to journal › Article
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TY - JOUR
T1 - The synthesis of (Y1-xGdx)2O3:Eu phosphor particles by flame spray pyrolysis with LiCl flux
AU - Seo, D. J.
AU - Kang, Yun Chan
AU - Park, S. B.
PY - 2003/10/1
Y1 - 2003/10/1
N2 - (Y1-xGdx)2O3:Eu phosphor particles with dense morphology were prepared by flame spray pyrolysis and the effect of LiCl flux on the crystallinity, morphology, and photo-luminescence characteristics of the particles was investigated. All as-prepared particles had monoclinic phase regardless of flux and had different luminescence characteristics from those of commercial Y2O3:Eu particles of cubic phase. The addition of LiCl flux reduced the post-treatment temperature by 300 °C for phase transformation from the monoclinic phase to the cubic phase. The post-treatment temperature of (Y0.75Gd0.25)2O3:Eu particles for phase transformation decreased from 1100 °C to 700 °C when LiCl flux was used. The morphology of the particles was also influenced by the Y/Gd ratio and the LiCl flux. The as-prepared particles had spherical shape and nonaggregation characteristics regardless of Y/Gd ratio and flux. The sphericity of the as-prepared particles prepared without flux was maintained after post-treatment for phase transformation in all Y/Gd ratios. However, LiCl addition promoted the aggregation between product particles. The prepared particles had high photoluminescence intensities comparable to that of the commercial product.
AB - (Y1-xGdx)2O3:Eu phosphor particles with dense morphology were prepared by flame spray pyrolysis and the effect of LiCl flux on the crystallinity, morphology, and photo-luminescence characteristics of the particles was investigated. All as-prepared particles had monoclinic phase regardless of flux and had different luminescence characteristics from those of commercial Y2O3:Eu particles of cubic phase. The addition of LiCl flux reduced the post-treatment temperature by 300 °C for phase transformation from the monoclinic phase to the cubic phase. The post-treatment temperature of (Y0.75Gd0.25)2O3:Eu particles for phase transformation decreased from 1100 °C to 700 °C when LiCl flux was used. The morphology of the particles was also influenced by the Y/Gd ratio and the LiCl flux. The as-prepared particles had spherical shape and nonaggregation characteristics regardless of Y/Gd ratio and flux. The sphericity of the as-prepared particles prepared without flux was maintained after post-treatment for phase transformation in all Y/Gd ratios. However, LiCl addition promoted the aggregation between product particles. The prepared particles had high photoluminescence intensities comparable to that of the commercial product.
UR - http://www.scopus.com/inward/record.url?scp=0041468608&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0041468608&partnerID=8YFLogxK
U2 - 10.1007/s00339-002-1758-0
DO - 10.1007/s00339-002-1758-0
M3 - Article
AN - SCOPUS:0041468608
VL - 77
SP - 659
EP - 663
JO - Applied Physics
JF - Applied Physics
SN - 0340-3793
IS - 5
ER -