| Zinc Gallate (ZnGa2O4)박막 형광체의 합성과 발광특성 |
| 김수연, 윤영훈1, 최성철 |
한양대학교 신소재공학과
1동신대학교 수소에너지학과 |
| Synthesis and Photoluminescence Characteristics of Zinc Gallate (ZnGa2O4) Thin Film Phosphors |
| Su-Youn Kim, Young-Hoon Yun1, Sung-Churl Choi |
Department of Materials Science and Engineering, Hanyang University
1Department of Hydrogen and Fuel Cell Technology, Dongshin University |
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| ABSTRACT |
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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). |
| Key words:
$ZnGa_2O_4$, Thin film phosphor, Chemical solution method, Photoluminescence |
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