Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis and Photoluminescence Characteristics of Zinc Gallate (ZnGa2O4) Thin Film Phosphors

Zinc Gallate (ZnGa2O4)박막 형광체의 합성과 발광특성

  • Kim, Su-Youn (Department of Materials Science and Engineering, Hanyang University) ;
  • Yun, Young-Hoon (Department of Hydrogen and Fuel Cell Technology, Dongshin University) ;
  • Choi, Sung-Churl (Department of Materials Science and Engineering, Hanyang University)
  • 김수연 (한양대학교 신소재공학과) ;
  • 윤영훈 (동신대학교 수소에너지학과) ;
  • 최성철 (한양대학교 신소재공학과)
  • Published : 2007.01.31
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Abstract

Zinc gallate $(ZnGa_2O_4)$ thin film phosphors have been formed on ITO glass substrates by a sol-gel spinning coating method. For the formation of the film phosphors, the starting materials of zinc acetate dihydrate, gallium nitrate hydrate and 2-methoxyethanol as a solution were used. The thin films deposited were firstly dried at $100^{\circ}C$ and fired at $500^{\circ}C\;or\;600^{\circ}C$ for 30 min and then, annealed $500^{\circ}C\;or\;600^{\circ}C$ at for 30 min under an annealing atmosphere of 3% $H_2/Ar$. The thin films deposited on ITO glass plates showed the (220), (222), (400), (422), (511), and (440) peaks of spinel structure as well as the (311) peak indicating a standard powder diffraction pattern. The surface morphologies of the thin film phosphors were observed with a firing and an annealing condition. The $ZnGa_2O_4$ film phosphors showed the blue emission spectra around 410 nm as well as the emission spectra in the UV region (360-380 nm).

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References

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