화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.15, No.6, 408-412, June, 2005
DOI10.3740/MRSK.2005.15.6.408  Export Citation
NH 4F 융제가 바륨 스트론튬 실리케이트계 형광체의 특성에 미치는 영향
Effect of NH 4F Flux on the Characteristics of Barium Strontium Silicate Phosphor Particles
강희상, 구혜영1, 정대수1, 주서희1, 홍승권1, 강윤찬1, †, 정경열2, 박승빈
  • 한국과학기술원 생명화학공학과
  • 1건국대학교 화학공학과
  • 2한국화학연구원 화학소재부
Hee Sang Kang, Hye Young Koo1, Dae Soo Jung1, Seo Hee Ju1, Seung Kwon Hong1, Yun Chan Kang1, †, Kyeong Youl Jung2, and Seung Bin Park
  • Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Sceince and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea
  • 1Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea
  • 2Advanced Materials Division, Korea Research Insititute of Chemical Technology, P.O. Box 107, Yuseong-gu, Daejeon 305-600, Korea
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[ Ba 1.5 Sr 0.5 SiO 4 :Eu ] phosphor particles with high photoluminescence intensity under long wavelength ultraviolet were prepared by spray pyrolysis. We investigated the effect of NH 4 F flux added into starting solution on the morphology and photoluminescence intensity of Ba 1.5 Sr 0.5 SiO 4 :Eu phosphor prepared by spray pyrolysis. Ba 1.5 Sr 0.5 SiO 4 :Eu phosphor particles prepared from starting solution containing NH 4 F flux had the maximum photoluminescence intensity at the post-treatment temperature of 1200 ? C and the maximum photoluminescence intensity of Ba 1.5 Sr 0.5 SiO 4 :Eu phosphor particles prepared from the starting solution containing NH 4 F flux was 137% of that of the phosphor particles prepared from the starting solution without flux material. Ba 1.5 Sr 0.5 SiO 4 :Eu phosphor particles prepared from starting solution containing NH 4 F flux had larger size and more aggregated morphology than those prepared from starting solution without flux material. The photoluminescence intensity of Ba 1.5 Sr 0.5 SiO 4 :Eu phosphor particles prepared from starting solution containing NH 4 F flux above 3wt.% had high photoluminescence intensities. The addition amount of NH 4 F flux showing the maximum photoluminescence intensity was 12wt.% . The optimum amount of NH 4 F flux was 5wt.% when we considered the morphological and photoluminescence characteristics of Ba 1.5 Sr 0.5 SiO 4 :Eu ohosphor particles prepared by spray pyrolysis.
Keywords:phosphor;spray pyrolysis;LED;flux
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