한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Luminescent Properties of the $Tb^{3+}$-Activated $ABCO_4$ and $ABC_3O_7$ Phosphors (A=Ca, Sr ; B=Y, RE ; C=AI, Ga)

  • Kim, Chang-Hae (Display Phosphors Group, Korea Research Institute of Chemical Technology) ;
  • Park, Sang-Mi (Display Phosphors Group, Korea Research Institute of Chemical Technology) ;
  • Park, Joung-Kyu (Display Phosphors Group, Korea Research Institute of Chemical Technology) ;
  • Park, Hee-Dong (Display Phosphors Group, Korea Research Institute of Chemical Technology) ;
  • Park, Joon-Taik (Department of Chemistry, Korea Advanced Institute of Science and Technology)
  • Published : 2002.08.21
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Abstract

In $ABCO_4$ and $ABC_3O_7$ (A=Ca, Sr; B=Y, Rare earth; C=Al, Ga), random distribution of static crystalline fields in activator sites results in inhomogeneous broadening of spectral lines of luminescent materials. In this study, we investigated luminescent properties of above-mentioned materials by excitation and emission spectra. In result, both $ABCO_4$:Tb and $ABC_3O_7$:Tb phosphors emit the green light. $ABC_3O_7$:Tb phosphors absorbed shorter wavelength energy than $ABCO_4$ phosphors so that the emission efficiencies of $ABC_3O_7$:Tb phosphors were higher than those of $ABCO_4$:Tb phosphors under vacuum UV.

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