Role of flux in the production process of red phosphors for white LEDs

Gwan Hyoung Lee; Chulsoo Yoon; Shinhoo Kang

doi:10.1007/s10853-008-2943-0

Role of flux in the production process of red phosphors for white LEDs

Gwan Hyoung Lee, Chulsoo Yoon, Shinhoo Kang

Department of Materials Science and Engineering

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

13 Citations (Scopus)

Abstract

Eu³⁺-doped potassium tungstate phosphor was synthesized by solid-state reactions. The as-produced phosphor was re-fired with a small amount of flux-like alkali carbonates and boron oxide. It was confirmed that the re-firing process containing a flux led to the uniform particle growth with smooth surface and improved Eu³⁺ distribution at the surface of particles, resulting in the enhanced red emission. The X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS) analyses were used to determine the role of flux in the system.

Original language	English
Pages (from-to)	6109-6115
Number of pages	7
Journal	Journal of Materials Science
Volume	43
Issue number	18
DOIs	https://doi.org/10.1007/s10853-008-2943-0
Publication status	Published - 2008 Sept

Bibliographical note

Funding Information:
Acknowledgement This research was partially sponsored by the Samsung Electro-Mechanics Co. and by BK21 program of the ministry of Education, Republic of Korea (2005).

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1007/s10853-008-2943-0

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title = "Role of flux in the production process of red phosphors for white LEDs",

abstract = "Eu3+-doped potassium tungstate phosphor was synthesized by solid-state reactions. The as-produced phosphor was re-fired with a small amount of flux-like alkali carbonates and boron oxide. It was confirmed that the re-firing process containing a flux led to the uniform particle growth with smooth surface and improved Eu3+ distribution at the surface of particles, resulting in the enhanced red emission. The X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS) analyses were used to determine the role of flux in the system.",

author = "Lee, {Gwan Hyoung} and Chulsoo Yoon and Shinhoo Kang",

note = "Funding Information: Acknowledgement This research was partially sponsored by the Samsung Electro-Mechanics Co. and by BK21 program of the ministry of Education, Republic of Korea (2005).",

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AU - Lee, Gwan Hyoung

AU - Yoon, Chulsoo

AU - Kang, Shinhoo

N1 - Funding Information: Acknowledgement This research was partially sponsored by the Samsung Electro-Mechanics Co. and by BK21 program of the ministry of Education, Republic of Korea (2005).

PY - 2008/9

Y1 - 2008/9

N2 - Eu3+-doped potassium tungstate phosphor was synthesized by solid-state reactions. The as-produced phosphor was re-fired with a small amount of flux-like alkali carbonates and boron oxide. It was confirmed that the re-firing process containing a flux led to the uniform particle growth with smooth surface and improved Eu3+ distribution at the surface of particles, resulting in the enhanced red emission. The X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS) analyses were used to determine the role of flux in the system.

AB - Eu3+-doped potassium tungstate phosphor was synthesized by solid-state reactions. The as-produced phosphor was re-fired with a small amount of flux-like alkali carbonates and boron oxide. It was confirmed that the re-firing process containing a flux led to the uniform particle growth with smooth surface and improved Eu3+ distribution at the surface of particles, resulting in the enhanced red emission. The X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS) analyses were used to determine the role of flux in the system.

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Role of flux in the production process of red phosphors for white LEDs

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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