Transactions on Electrical and Electronic Materials

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Luminescence Property of ZnS:Mn,Mg Phosphor with Excitation of Plasma Blue Light Source

  • Ryu, Si Hong (Department of Advanced Materials Engineering, Korea Polytechnic University) ;
  • Kim, Wan Kyu (Department of Advanced Materials Engineering, Korea Polytechnic University) ;
  • Lee, Seong Eui (Department of Advanced Materials Engineering, Korea Polytechnic University)
  • Received : 2012.10.19
  • Accepted : 2012.11.29
  • Published : 2013.02.25
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Abstract

In this paper, we investigated the effect of luminescence properties of various concentrations of magnesium-doped ZnS:Mn phosphor excited by plasma luminescence device. The PL intensity was evaluated in the range of 300~500 nm excitation wavelengths. We found the highest PL intensity of the phosphors excited by 365 nm and 450 nm was observed at Mg concentrations of 1.4 wt% and 0.8 wt%, respectively. In addition, an emission peak was distinguished at 580 nm wavelength. With increasing Mg dopant level, enhanced PL intensity was observed, which is possibly applicable to color converting materials by blue emission for white light sources. Finally, we evaluated the luminance properties of color converting ZnS:Mn,Mg phosphors with plasma blue light source. the white luminance of plasma light source with CIE(0.36,0.26) was established by color converting phosphors of ZnS:Mn with 0.8 wt% Mg.

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