한국재료학회지 (Korean Journal of Materials Research)

  • 제12권10호
  • /
  • Pages.771-775
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  • 2002
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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분무열분해 공정에 의해 합성되어진 나노 크기 Gd2O3:Eu형광체

Nano-sized Gd2O3:Eu Phosphor Prepared by Spray Pyrolysis

  • 김은정 (한국화학연구원 화학소재부, 충남대학교 화학공학과) ;
  • 강윤찬 (한국화학연구원 화학소재부) ;
  • 박희동 (한국화학연구원 화학소재부) ;
  • 유승곤 (충남대학교 화학공학과)
  • Kim, Eun-Joung (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Kang, Yun-Chan (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Park, Hee-Dong (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Ryu, Seung-Kon (Department of Chemical Engineering, Chungnam National University)
  • 발행 : 2002.10.01
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초록

$Gd_2$$O_3$:Eu phosphor particles with nano-sized and non-aggregation characteristics were prepared by spray pyrolysis using the spray solution containing polymeric precursor and $Li_2$$CO_3$ flux material. Nano-sized $Gd_2$$O_3$:Eu phosphor particles had higher brightness than the commercial $Y_2$$O_3$:Eu phosphor particles. The $Gd_2$$O_3$:Eu phosphor particles had nano-size and non-aggregation characteristics after heat-treatment at $1000^{\circ}C$ when the addition amount of $Li_2$$CO_3$ flux was 1 wt.% and 3 wt.%. The mean size of particles were 200 nm and 400 nm when the amount of flux was 1 wt.% and 3 wt.%, respectively. The prepared phosphor particles had higher photoluminescence intensity than that of the commercial product regardless of the content of$ Li_2$$CO_3$ flux and had the maximum brightness when the content of flux was 5 wt %. The photoluminescence intensity of the nano-sized $Gd_2$$O_3$:Eu phosphor particles containing 3 wt.% $Li_2$$CO_3$ flux was 125% in comparison with that of the micron-sized $Y_2$$O_3$:Eu commercial product.

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참고문헌

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