Abstract
Ca15(PO4)2(SiO4) 6:Eu2+,Ce3+ phosphor was synthesized by a solid-state reaction. Doping of Ce3+ into the Ca2+ site of the Ca15(PO4)2(SiO4) 6:Eu2+ phosphor enhanced the Eu2+ emission greatly, as observed by measuring the photoluminescence properties and the quantum efficiency levels. The mechanism of the enhancement of the Eu 2+ emission by Ce3+ doping was investigated by comparing the normalized photoluminescence (PL) spectra with the normalized photoluminescence excitation (PLE) spectra and analyzing the absorbance and the fluorescence lifetime of the Ca15(PO4) 2(SiO4)6:Eu2+,Ce3+ phosphors. Furthermore, the thermoluminescence properties were measured to confirm the thermal stability of the synthesized phosphor when exposed to the high junction temperature of recent high-power LED chips, showing a thermal activation energy barrier of 0.213 eV.
| Original language | English |
|---|---|
| Pages (from-to) | 9791-9795 |
| Number of pages | 5 |
| Journal | Ceramics International |
| Volume | 39 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2013 Dec 1 |
| Externally published | Yes |
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Keywords
- A. Powders: solid state reaction
- C. Optical properties
- D. Silicate
- E. Functional applications
ASJC Scopus subject areas
- Ceramics and Composites
- Process Chemistry and Technology
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
Enhancement of fluorescence by Ce3+ doping in green-emitting Ca15(PO4)2(SiO4)6 : Eu 2+ phosphor for UV-based w-LEDs. / Hur, Seyoon; Song, Hee Jo; Roh, Hee Suk; Kim, Dong-Wan; Hong, Kug Sun.
In: Ceramics International, Vol. 39, No. 8, 01.12.2013, p. 9791-9795.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhancement of fluorescence by Ce3+ doping in green-emitting Ca15(PO4)2(SiO4)6
T2 - Eu 2+ phosphor for UV-based w-LEDs
AU - Hur, Seyoon
AU - Song, Hee Jo
AU - Roh, Hee Suk
AU - Kim, Dong-Wan
AU - Hong, Kug Sun
PY - 2013/12/1
Y1 - 2013/12/1
N2 - Ca15(PO4)2(SiO4) 6:Eu2+,Ce3+ phosphor was synthesized by a solid-state reaction. Doping of Ce3+ into the Ca2+ site of the Ca15(PO4)2(SiO4) 6:Eu2+ phosphor enhanced the Eu2+ emission greatly, as observed by measuring the photoluminescence properties and the quantum efficiency levels. The mechanism of the enhancement of the Eu 2+ emission by Ce3+ doping was investigated by comparing the normalized photoluminescence (PL) spectra with the normalized photoluminescence excitation (PLE) spectra and analyzing the absorbance and the fluorescence lifetime of the Ca15(PO4) 2(SiO4)6:Eu2+,Ce3+ phosphors. Furthermore, the thermoluminescence properties were measured to confirm the thermal stability of the synthesized phosphor when exposed to the high junction temperature of recent high-power LED chips, showing a thermal activation energy barrier of 0.213 eV.
AB - Ca15(PO4)2(SiO4) 6:Eu2+,Ce3+ phosphor was synthesized by a solid-state reaction. Doping of Ce3+ into the Ca2+ site of the Ca15(PO4)2(SiO4) 6:Eu2+ phosphor enhanced the Eu2+ emission greatly, as observed by measuring the photoluminescence properties and the quantum efficiency levels. The mechanism of the enhancement of the Eu 2+ emission by Ce3+ doping was investigated by comparing the normalized photoluminescence (PL) spectra with the normalized photoluminescence excitation (PLE) spectra and analyzing the absorbance and the fluorescence lifetime of the Ca15(PO4) 2(SiO4)6:Eu2+,Ce3+ phosphors. Furthermore, the thermoluminescence properties were measured to confirm the thermal stability of the synthesized phosphor when exposed to the high junction temperature of recent high-power LED chips, showing a thermal activation energy barrier of 0.213 eV.
KW - A. Powders: solid state reaction
KW - C. Optical properties
KW - D. Silicate
KW - E. Functional applications
UR - http://www.scopus.com/inward/record.url?scp=84883763909&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84883763909&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2013.05.048
DO - 10.1016/j.ceramint.2013.05.048
M3 - Article
AN - SCOPUS:84883763909
VL - 39
SP - 9791
EP - 9795
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 8
ER -