Luminescence of Eu3+ and Sm3+ doped potassium tungstate phosphors

Gwan Hyoung Lee; Shinhoo Kang

Luminescence of Eu³⁺ and Sm³⁺ doped potassium tungstate phosphors

Gwan Hyoung Lee, Shinhoo Kang

Department of Materials Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

The luminescent properties of Eu³⁺ and Sm³⁺ doped potassium tungstate phosphor were investigated. The K_4-3x(WO ₄)₂:Eu_x,Sm_y phosphor was produced by firing the mixed precursors, followed by re-firing with a flux. The re-firing process provided the clean surface to the particles. The excitation spectra showed that the strong absorption in the region of ultra violet light occurred due to the high europium doping concentration. The incorporation of europium to potassium tungstate was easier, compared to other host materials. The excitation spectra could be controlled by the small addition of samarium. The increase of energy absorption around 405nm was assigned to the Sm³⁺ ions. The comparison between real x-ray diffraction and simulated one revealed that the crystal structure of K_4-3x(WO₄)₂:Eu _x,Sm_y phosphor is monoclinic with a space group, C2/c.

Original language	English
Pages (from-to)	1510-1513
Number of pages	4
Journal	Proceedings of International Meeting on Information Display
Volume	2
Publication status	Published - 2006
Event	5th International Meeting on Information Display - Seoul, Korea, Republic of Duration: 2005 Jul 19 → 2005 Jul 23

All Science Journal Classification (ASJC) codes

Engineering(all)

Cite this

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title = "Luminescence of Eu3+ and Sm3+ doped potassium tungstate phosphors",

abstract = "The luminescent properties of Eu3+ and Sm3+ doped potassium tungstate phosphor were investigated. The K4-3x(WO 4)2:Eux,Smy phosphor was produced by firing the mixed precursors, followed by re-firing with a flux. The re-firing process provided the clean surface to the particles. The excitation spectra showed that the strong absorption in the region of ultra violet light occurred due to the high europium doping concentration. The incorporation of europium to potassium tungstate was easier, compared to other host materials. The excitation spectra could be controlled by the small addition of samarium. The increase of energy absorption around 405nm was assigned to the Sm3+ ions. The comparison between real x-ray diffraction and simulated one revealed that the crystal structure of K4-3x(WO4)2:Eu x,Smy phosphor is monoclinic with a space group, C2/c.",

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

year = "2006",

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volume = "2",

pages = "1510--1513",

journal = "Proceedings of International Meeting on Information Display",

issn = "1738-7558",

note = "5th International Meeting on Information Display ; Conference date: 19-07-2005 Through 23-07-2005",

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TY - JOUR

T1 - Luminescence of Eu3+ and Sm3+ doped potassium tungstate phosphors

AU - Lee, Gwan Hyoung

AU - Kang, Shinhoo

PY - 2006

Y1 - 2006

N2 - The luminescent properties of Eu3+ and Sm3+ doped potassium tungstate phosphor were investigated. The K4-3x(WO 4)2:Eux,Smy phosphor was produced by firing the mixed precursors, followed by re-firing with a flux. The re-firing process provided the clean surface to the particles. The excitation spectra showed that the strong absorption in the region of ultra violet light occurred due to the high europium doping concentration. The incorporation of europium to potassium tungstate was easier, compared to other host materials. The excitation spectra could be controlled by the small addition of samarium. The increase of energy absorption around 405nm was assigned to the Sm3+ ions. The comparison between real x-ray diffraction and simulated one revealed that the crystal structure of K4-3x(WO4)2:Eu x,Smy phosphor is monoclinic with a space group, C2/c.

AB - The luminescent properties of Eu3+ and Sm3+ doped potassium tungstate phosphor were investigated. The K4-3x(WO 4)2:Eux,Smy phosphor was produced by firing the mixed precursors, followed by re-firing with a flux. The re-firing process provided the clean surface to the particles. The excitation spectra showed that the strong absorption in the region of ultra violet light occurred due to the high europium doping concentration. The incorporation of europium to potassium tungstate was easier, compared to other host materials. The excitation spectra could be controlled by the small addition of samarium. The increase of energy absorption around 405nm was assigned to the Sm3+ ions. The comparison between real x-ray diffraction and simulated one revealed that the crystal structure of K4-3x(WO4)2:Eu x,Smy phosphor is monoclinic with a space group, C2/c.

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M3 - Conference article

AN - SCOPUS:33847422361

SN - 1738-7558

VL - 2

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JO - Proceedings of International Meeting on Information Display

JF - Proceedings of International Meeting on Information Display

T2 - 5th International Meeting on Information Display

Y2 - 19 July 2005 through 23 July 2005

ER -

Luminescence of Eu³⁺ and Sm³⁺ doped potassium tungstate phosphors

Abstract

All Science Journal Classification (ASJC) codes

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