한국정보전자통신기술학회논문지 (The Journal of Korea Institute of Information, Electronics, and Communication Technology)

  • 제4권1호
  • /
  • Pages.61-67
  • /
  • 2011
  • /
  • 2005-081X(pISSN)
  • /
  • 2288-9302(eISSN)
한국정보전자통신기술학회 (Korea Information Electronic Communication Technology)
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Influence of HMDS additive on the properties of YAG:Ce nanophosphor

  • Choi, Kyu-Man (School of Electronic and Information, Telecommunication Engineering, Kwandong University) ;
  • Kim, Yeo-Hwan (School of Electronic and Information, Telecommunication Engineering, Kwandong University) ;
  • Lim, Hae-Jin (Division of Electronic and Information Communication Engineering, Kangwon National University) ;
  • Yoon, Sang-Ok (Department of Advanced Ceramic Materials Engineering, Gangneung-Wonju National University)
  • 투고 : 2011.01.05
  • 심사 : 2011.02.03
  • 발행 : 2011.03.30
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초록

YAG:Ce 형광제 제조에 있어서 공침(co-precipitation) 후 n-butanol 공비증류(azeotropic distillation)시 HMDS(hexadimethyldisilazane)를 첨가하였을 때, 형광체가 광학특성에 미치는 영향에 관하여 연구하였다. 물과 유기용제에 의한 공비증류 시 유기용제의 분자량이 크면 표면의 수소결합이 유기용제로 치환됨으로서 표면장력을 감소시켜 분체의 원형화(conglobation)와 응집(agglomerate)을 감소시키므로 유기용제로 n-butanol보다 분자량이 큰 HMDS을 첨가하였다. N-butanol 만을 사용한 형광체가 HMDS를 첨가한 것 보다 응집(agglomerate)되는 현상이 감소하였으며 우수한 광학적 특성을 나타내었다.

Influence of hexamethyldisilazane(HMDS) in post processing technique by using n-butanol azeotropic distillation on the luminescence properties of YAG:Ce nanophosphor were studied. The organic solvent(n-butanol) azeotropic distillation which prevent powders from conglobation since lager molecules decrease the surface tension and more complete replace the residual water in the precipitate. HMDS that had larger molecules than that of n-butanol was added in azeotropic distillation. The phosphor synthesized from n-butanol azeotropic distillation exhibited lower agglomerate and better photoluminescence properties than that from HMDS added heterogeneous azeotropic distillation.

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