Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Photo- and Cathod-luminesent Properties of $YNbO_4$ : Bi Phosphors

$YNbO_4에\;Bi^{3+}$가 도핑된 형광체의 빛발광 및 저전압 음극선발광 특성

  • 한정화 (한국과학연구소 화학소재연구단) ;
  • 김현정 (한국과학연구소 화학소재연구단) ;
  • 박희동 (한국과학연구소 화학소재연구단)
  • Published : 1998.03.01
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Abstract

Field emission display (FED) is currently being explored as a potential flat panel display technology. The need of new materials for low voltage blue phosphors for FED focused our attention on the $Y_2O_3-Nb_2O_5$ sys-tem. Yttrium niobate doped with $Bi^{3+}$ was prepared by solid state reaction technique and the optimization of the luminescent properties with a control of $Bi^{3+}$ amounts and Y/Nb ratio was studied. Under 254 nm and low voltage electron excitations $Bi^{3+}-activated$ YNbO4 phosphors showed a strong and relatively narrow blue em-ission band with a range of 420 to 450 nm, Especially 0.4wt% $Bi^{3+}\;doped\;YNbO_4$ phosphors with Y/Nb ratio of 1/1 showed the maximum emission intensity. Under low voltage electron excitation maximum emission in-tensity appeared at the Y/Nb ratio of 0.495/0.505.

Keywords

References

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