Journal of Information Display

The Korean Infomation Display Society (한국정보디스플레이학회)
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High Luminance $Zn_2SiO_4$:Mn phosphors Prepared by Homogeneous Precipitation Method

  • Jung, Ha-Kyun (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Sohn, Kee-Sun (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Sung, Bu-Young (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Park, Hee-Dong (Advanced Materials Division, Korea Research Institute of Chemical Technology)
  • Published : 2000.12.21
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Abstract

Manganese-doped $Zn_2SiO_4$ phosphors well known as a green emitter with high luminescence efficiency were prepared by the homogeneous precipitation method, and their photoluminescence properties under vacuum-ultraviolet (VUV) excitation were investigated. $Zn_2SiO_4$:Mn phosphors obtained by this method have exhibited a high luminance of property and a spherical shape of particles. In particular, the green emission intensity of zinc orthosilicate prepared as containing around 2 mole% of manganese was much stronger than that of the commercial $Zn_2SiO_4$:Mn phosphor, while the decay time was longer. However, addition of $Al^{3+}$ and $Li^+$ into $Zn_2SiO_4$:Mn composition has significantly diminished the decay time of the phosphor without much degradation of the emission intensity.

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