Sol- Gel Synthesis and Luminescent Properties of ${Y_2}{SiO_5}:Ce$ Blue Phosphors

${Y_2}{SiO_5}:Ce$ 청색 형광체의 졸-겔 합성 및 발광특성

  • Lee, Jun (Display Phosphor Group, Korea Research Institute of Chemical Technology) ;
  • Han, Cheong-Hwa (Department of Chemistry, Halla University) ;
  • Park, Hee-Dong (Display Phosphor Group, Korea Research Institute of Chemical Technology) ;
  • Yun, Sock-Sung (Department of Chemistry, Chungnam National University)
  • 이준 (한국화학연구원 화학소재부) ;
  • 한정화 (한라대학교 교양과정부) ;
  • 박희동 (한국화학연구원 화학소재부) ;
  • 윤석승 (충남대학교 화학과)
  • Published : 2001.09.01

Abstract

The $Y_2SiO_5:Ce$ phosphors were synthesized by sol-gel technique in order to improve the performance of blue emitting phosphors for field emission display(FED). The resulted$Y_2SiO_5:Ce$ phosphors enhanced the emission intensity. In addition, calcination temperature of sol-gel technique(1300~140$0^{\circ}C$) was lower than that of the solid state reaction(>1$600^{\circ}C$). Under 365 nm and low voltage electron excitations. $Ce^{3+}$ -activated $Y_2SiO_5$phosphors showed blue emission band with a range of 400~ 430nm. Especially, 2mol% $Ce^{3+}$ doped $Y_2SiO_5:Ce$phosphors showed the maximum emission intensity. We have also controlled drying temperature of wet gel, pH, and $H_2O$/TEOS molar ratio for the optimum condition of TEOS hydrolysis.

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