Enhancement of fluorescence by Ce3+ doping in green-emitting Ca15(PO4)2(SiO4)6:Eu 2+ phosphor for UV-based w-LEDs

Seyoon Hur; Hee Jo Song; Hee Suk Roh; Dong Wan Kim; Kug Sun Hong

doi:10.1016/j.ceramint.2013.05.048

Enhancement of fluorescence by Ce³⁺ doping in green-emitting Ca₁₅(PO₄)₂(SiO₄)₆:Eu ²⁺ phosphor for UV-based w-LEDs

Seyoon Hur, Hee Jo Song, Hee Suk Roh, Dong Wan Kim, Kug Sun Hong

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article

8 Citations (Scopus)

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	https://doi.org/10.1016/j.ceramint.2013.05.048
Publication status	Published - 2013 Dec

Keywords

A. Powders: solid state reaction
C. Optical properties
D. Silicate
E. Functional applications

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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Hur, S., Song, H. J., Roh, H. S., Kim, D. W., & Hong, K. S. (2013). Enhancement of fluorescence by Ce³⁺ doping in green-emitting Ca₁₅(PO₄)₂(SiO₄)₆:Eu ²⁺ phosphor for UV-based w-LEDs. Ceramics International, 39(8), 9791-9795. https://doi.org/10.1016/j.ceramint.2013.05.048

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title = "Enhancement of fluorescence by Ce3+ doping in green-emitting Ca15(PO4)2(SiO4)6:Eu 2+ phosphor for UV-based w-LEDs",

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.",

keywords = "A. Powders: solid state reaction, C. Optical properties, D. Silicate, E. Functional applications",

author = "Seyoon Hur and Song, {Hee Jo} and Roh, {Hee Suk} and Kim, {Dong Wan} and Hong, {Kug Sun}",

year = "2013",

month = dec,

doi = "10.1016/j.ceramint.2013.05.048",

language = "English",

volume = "39",

pages = "9791--9795",

journal = "Ceramics International",

issn = "0272-8842",

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T1 - Enhancement of fluorescence by Ce3+ doping in green-emitting Ca15(PO4)2(SiO4)6: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

Y1 - 2013/12

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

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JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

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