Improved photoluminescence of Sr5 (PO4)3Cl:Eu2+ phosphor particles prepared by flame spray pyrolysis

Y. C. Kang; J. R. Sohn; H. S. Yoon; K. Y. Jung; H. D. Park

doi:10.1149/1.1534099

Improved photoluminescence of Sr₅ (PO₄)₃Cl:Eu²⁺ phosphor particles prepared by flame spray pyrolysis

Y. C. Kang, J. R. Sohn, H. S. Yoon, K. Y. Jung, H. D. Park

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

Flame spray pyrolysis has been utilized in order to improve the photoluminescence (PL) intensity of blue-emitting Sr₅(PO₄)₃Cl:Eu²⁺ phosphor particles for light emitting diode applications. When Sr₅(PO₄)₃Cl:Eu²⁺ phosphor particles were prepared by conventional spray pyrolysis, the PL intensity was much lower than that of commercial Sr₅(PO₄)₃Cl:Eu²⁺ phosphor particles. However, Sr₅(PO₄)₃Cl:Eu²⁺ phosphor particles prepared by the flame spray pyrolysis showed a high PL intensity compared with the commercial one. The morphology and the crystallinity of Sr₅(PO₄)Cl:Eu²⁺ phosphor particles are strongly affected by the flame condition and the post-treatment environment. Sr₅(PO₄)₃Cl:Eu²⁺ particles prepared by flame spray pyrolysis were of smaller size than commercial ones, although their spherical morphology was not maintained after the post-treatment at 1000°C with NH₄Cl flux. The addition of NH₄Cl flux during post-treatment greatly enhances the PL intensity of prepared Sr₅(PO₄)₃Cl:Eu²⁺ phosphor particles due to increased crystallinity. It was found that the phosphor particles with larger crystallite size have higher PL intensity regardless of the method of preparation.

Original language	English
Pages (from-to)	H38-H42
Journal	Journal of the Electrochemical Society
Volume	150
Issue number	2
DOIs	https://doi.org/10.1149/1.1534099
Publication status	Published - 2003 Feb
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1149/1.1534099

Cite this

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title = "Improved photoluminescence of Sr5 (PO4)3Cl:Eu2+ phosphor particles prepared by flame spray pyrolysis",

abstract = "Flame spray pyrolysis has been utilized in order to improve the photoluminescence (PL) intensity of blue-emitting Sr5(PO4)3Cl:Eu2+ phosphor particles for light emitting diode applications. When Sr5(PO4)3Cl:Eu2+ phosphor particles were prepared by conventional spray pyrolysis, the PL intensity was much lower than that of commercial Sr5(PO4)3Cl:Eu2+ phosphor particles. However, Sr5(PO4)3Cl:Eu2+ phosphor particles prepared by the flame spray pyrolysis showed a high PL intensity compared with the commercial one. The morphology and the crystallinity of Sr5(PO4)Cl:Eu2+ phosphor particles are strongly affected by the flame condition and the post-treatment environment. Sr5(PO4)3Cl:Eu2+ particles prepared by flame spray pyrolysis were of smaller size than commercial ones, although their spherical morphology was not maintained after the post-treatment at 1000°C with NH4Cl flux. The addition of NH4Cl flux during post-treatment greatly enhances the PL intensity of prepared Sr5(PO4)3Cl:Eu2+ phosphor particles due to increased crystallinity. It was found that the phosphor particles with larger crystallite size have higher PL intensity regardless of the method of preparation.",

author = "Kang, {Y. C.} and Sohn, {J. R.} and Yoon, {H. S.} and Jung, {K. Y.} and Park, {H. D.}",

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T1 - Improved photoluminescence of Sr5 (PO4)3Cl:Eu2+ phosphor particles prepared by flame spray pyrolysis

AU - Kang, Y. C.

AU - Sohn, J. R.

AU - Yoon, H. S.

AU - Jung, K. Y.

AU - Park, H. D.

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N2 - Flame spray pyrolysis has been utilized in order to improve the photoluminescence (PL) intensity of blue-emitting Sr5(PO4)3Cl:Eu2+ phosphor particles for light emitting diode applications. When Sr5(PO4)3Cl:Eu2+ phosphor particles were prepared by conventional spray pyrolysis, the PL intensity was much lower than that of commercial Sr5(PO4)3Cl:Eu2+ phosphor particles. However, Sr5(PO4)3Cl:Eu2+ phosphor particles prepared by the flame spray pyrolysis showed a high PL intensity compared with the commercial one. The morphology and the crystallinity of Sr5(PO4)Cl:Eu2+ phosphor particles are strongly affected by the flame condition and the post-treatment environment. Sr5(PO4)3Cl:Eu2+ particles prepared by flame spray pyrolysis were of smaller size than commercial ones, although their spherical morphology was not maintained after the post-treatment at 1000°C with NH4Cl flux. The addition of NH4Cl flux during post-treatment greatly enhances the PL intensity of prepared Sr5(PO4)3Cl:Eu2+ phosphor particles due to increased crystallinity. It was found that the phosphor particles with larger crystallite size have higher PL intensity regardless of the method of preparation.

AB - Flame spray pyrolysis has been utilized in order to improve the photoluminescence (PL) intensity of blue-emitting Sr5(PO4)3Cl:Eu2+ phosphor particles for light emitting diode applications. When Sr5(PO4)3Cl:Eu2+ phosphor particles were prepared by conventional spray pyrolysis, the PL intensity was much lower than that of commercial Sr5(PO4)3Cl:Eu2+ phosphor particles. However, Sr5(PO4)3Cl:Eu2+ phosphor particles prepared by the flame spray pyrolysis showed a high PL intensity compared with the commercial one. The morphology and the crystallinity of Sr5(PO4)Cl:Eu2+ phosphor particles are strongly affected by the flame condition and the post-treatment environment. Sr5(PO4)3Cl:Eu2+ particles prepared by flame spray pyrolysis were of smaller size than commercial ones, although their spherical morphology was not maintained after the post-treatment at 1000°C with NH4Cl flux. The addition of NH4Cl flux during post-treatment greatly enhances the PL intensity of prepared Sr5(PO4)3Cl:Eu2+ phosphor particles due to increased crystallinity. It was found that the phosphor particles with larger crystallite size have higher PL intensity regardless of the method of preparation.

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