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Luminescence of Eu3+ and Sm3+ doped potassium tungstate phosphors

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Lee, G.H.; Kang, S.

Issue Date
Proceedings of International Meeting on Information Display
Proceedings of International Meeting on Information Display, Vol.2, pp.1510-1513
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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Related Researcher

  • College of Engineering
  • Department of Materials Science & Engineering
Research Area 2D materials, 2차원 물질, Smiconductor process, semiconductor devices, 반도체 공정, 반도체 소자


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