Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Luminescent Properties of $SrTiO_3:Pr^{3+}$ Phosphor Coated with $SiO_2$ and $Al_2O_3$ by Sol-Gel Method

졸-겔법에 의한 $SrTiO_3:Pr^{3+}$ 형광체의 $SiO_2$ 및 $Al_2O_3$ 코팅에 따른 발광특성

  • Lee, Dong-Kyu (Department of Industrial Chemical Engineering, College of Engineering, Chungbuk National University) ;
  • Lim, Mun-Hyuk (Department of Industrial Chemical Engineering, College of Engineering, Chungbuk National University) ;
  • Lee, Jin-Hwa (Department of Industrial Chemical Engineering, College of Engineering, Chungbuk National University) ;
  • Kim, Tae-Young (Department of Environmental Engineering, Chungbuk Provincial University of Science & Technology)
  • 이동규 (충북대학교 공과대학 공업화학과) ;
  • 임문혁 (충북대학교 공과대학 공업화학과) ;
  • 이진화 (충북대학교 공과대학 공업화학과) ;
  • 김태영 (청주과학대학 환경생명과학과)
  • Published : 2006.09.30
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Abstract

Field emission display(FED) is actively investigated in view of the development of full color flat-panel display, which can replace some cathode-ray tube(CRT). Thus, the development of new phosphors appropriate for FED is urgently needed and has been actively investigated. In this work, $SrTiO_3:Pr^{3+}$ phosphor was prepared by sol-gel method and the coating was applied by sol-gel method combined with sonication on these phosphor's surface into diluted precursor solution. It was found that very fine particles of coating material were formed on phosphor's surface. The luminescent intensity of $SrTiO_3:Pr^{3+}$ phosphor coated with $SiO_2$ and $Al_2O_3$ was considerably increased without any noticeable change in color chromaticity. The optimum concentration of coating material was found to be 1wt% and the optimum pH value of the solution was 10.

Keywords

References

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