Abstract
Ce-doped Y2SiO5 phosphor particles with spherical morphology, small size, high crystallinity, and good photoluminescence (PL) intensity were prepared by spray pyrolysis. The characteristics of prepared particles were compared with those of commercial ones. The particles annealed above 1000°C had a clear crystallinity of Y2SiO5, and the crystal structure changed from X1 to X2 type after annealing above 1200°C. The mean size of the particles increased from 0.5 to 1.4 μm when the overall solution concentrations were varied from 0.045 to 0.9 mol/liter. The photoluminescence intensity and crystallinity of particles increased as the particle size and preparation temperature were increased. The annealed particles larger than 0.8 μm maintained a spherical morphology. Emission of blue light was observed after annealing above 1000°C on excitation with an UV light. The PL spectra particles annealed below 1100°C had maximum values at 450 nm, and shifted to the smaller wavelengths after annealing above 1200°C. The brightness of particles increased with increasing annealing temperatures due to favorable crystallization and had a maximum at 1400°C. The particles annealed above 1400°C exhibited intensities higher than those of particles produced commercially.
| Original language | English |
|---|---|
| Pages (from-to) | 168-175 |
| Number of pages | 8 |
| Journal | Journal of Solid State Chemistry |
| Volume | 146 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1999 Jan 1 |
| Externally published | Yes |
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Keywords
- Blue phosphor
- Particles
- Photoluminescence
- Spherical morphology
- YSiO:Ce
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry
Cite this
Y2SiO5:Ce phosphor particles 0.5-1.4 μm in size with spherical morphology. / Kang, Yun Chan; Lenggoro, I. Wuled; Park, Seung Bin; Okuyama, Kikuo.
In: Journal of Solid State Chemistry, Vol. 146, No. 1, 01.01.1999, p. 168-175.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Y2SiO5:Ce phosphor particles 0.5-1.4 μm in size with spherical morphology
AU - Kang, Yun Chan
AU - Lenggoro, I. Wuled
AU - Park, Seung Bin
AU - Okuyama, Kikuo
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Ce-doped Y2SiO5 phosphor particles with spherical morphology, small size, high crystallinity, and good photoluminescence (PL) intensity were prepared by spray pyrolysis. The characteristics of prepared particles were compared with those of commercial ones. The particles annealed above 1000°C had a clear crystallinity of Y2SiO5, and the crystal structure changed from X1 to X2 type after annealing above 1200°C. The mean size of the particles increased from 0.5 to 1.4 μm when the overall solution concentrations were varied from 0.045 to 0.9 mol/liter. The photoluminescence intensity and crystallinity of particles increased as the particle size and preparation temperature were increased. The annealed particles larger than 0.8 μm maintained a spherical morphology. Emission of blue light was observed after annealing above 1000°C on excitation with an UV light. The PL spectra particles annealed below 1100°C had maximum values at 450 nm, and shifted to the smaller wavelengths after annealing above 1200°C. The brightness of particles increased with increasing annealing temperatures due to favorable crystallization and had a maximum at 1400°C. The particles annealed above 1400°C exhibited intensities higher than those of particles produced commercially.
AB - Ce-doped Y2SiO5 phosphor particles with spherical morphology, small size, high crystallinity, and good photoluminescence (PL) intensity were prepared by spray pyrolysis. The characteristics of prepared particles were compared with those of commercial ones. The particles annealed above 1000°C had a clear crystallinity of Y2SiO5, and the crystal structure changed from X1 to X2 type after annealing above 1200°C. The mean size of the particles increased from 0.5 to 1.4 μm when the overall solution concentrations were varied from 0.045 to 0.9 mol/liter. The photoluminescence intensity and crystallinity of particles increased as the particle size and preparation temperature were increased. The annealed particles larger than 0.8 μm maintained a spherical morphology. Emission of blue light was observed after annealing above 1000°C on excitation with an UV light. The PL spectra particles annealed below 1100°C had maximum values at 450 nm, and shifted to the smaller wavelengths after annealing above 1200°C. The brightness of particles increased with increasing annealing temperatures due to favorable crystallization and had a maximum at 1400°C. The particles annealed above 1400°C exhibited intensities higher than those of particles produced commercially.
KW - Blue phosphor
KW - Particles
KW - Photoluminescence
KW - Spherical morphology
KW - YSiO:Ce
UR - http://www.scopus.com/inward/record.url?scp=0004490330&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0004490330&partnerID=8YFLogxK
U2 - 10.1006/jssc.1999.8325
DO - 10.1006/jssc.1999.8325
M3 - Article
AN - SCOPUS:0004490330
VL - 146
SP - 168
EP - 175
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 1
ER -