Luminescence of Eu3+ and Sm3+ doped potassium tungstate phosphors

Gwan Hyoung Lee, Shinhoo Kang

Research output: Contribution to journalConference article

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.

Original languageEnglish
Pages (from-to)1510-1513
Number of pages4
JournalProceedings of International Meeting on Information Display
Volume2
Publication statusPublished - 2006 Dec 1
Event5th International Meeting on Information Display - Seoul, Korea, Republic of
Duration: 2005 Jul 192005 Jul 23

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Phosphors
Potassium
Luminescence
Europium
Samarium
Energy absorption
Diffraction
Crystal structure
Doping (additives)
Fluxes
X rays
Ions
Ultraviolet Rays

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.",
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Luminescence of Eu3+ and Sm3+ doped potassium tungstate phosphors. / Lee, Gwan Hyoung; Kang, Shinhoo.

In: Proceedings of International Meeting on Information Display, Vol. 2, 01.12.2006, p. 1510-1513.

Research output: Contribution to journalConference article

TY - JOUR

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

AU - Lee, Gwan Hyoung

AU - Kang, Shinhoo

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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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