Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Preparation of $Ga_{2}O_{3}$Red Phosphor Powders by Chemical Method

화학적 방법에 의한 $Ga_{2}O_{3}$적색 형광체 분말의 제조

  • 서강원 (한밭대학교 신소재공학부) ;
  • 박인용 (한밭대학교 신소재공학부) ;
  • 이종원 (한밭대학교 신소재공학부) ;
  • 김선태 (한밭대학교 신소재공학부)
  • Published : 2001.07.01
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Abstract

Europium-activated Ga$_2$O$_3$powders were prepared by modified "Pechini method" from mixed aqueous solutions of gallium nitrate, europium nitrate, ethylene glycol and citric acid. The formation process and structure of the phosphor powders were investigated by means of TG/DTA, XRD and SEM. It has been found that the phosphor powders were amorphous up to 50$0^{\circ}C$ and changed into crystalline $\beta$-Ga$_2$O$_3$phase above $600^{\circ}C$. The resulting nano-sized powders were obtained. Red luminescence in emission spectra were observed at room temperature.

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