Cu 금속미립자를 함유하는 Zinc Phosphate 유리의 광흡수와 XPS 스펙트럼

Optical Absorption and X-ray Photoelectron Spectra of Zinc Phosphate Glasses with Cu Nano-sized Metallic Particles

  • 강은태 (경상대학교 세라믹공학과) ;
  • 박용배 (경상대학교 세라믹공학과)
  • 발행 : 2000.09.01

초록

일반적인 유리용융과 열처리법을 이용하여 많은 양의 금속구리 미립자가 분산된 Zinc Phosphate 유리를 제조하였다. 금속산화물로는 Cu$_2$O를, 환원제로는 SnO를 사용하였다. XRD와 전자회절로부터 열처리에 의해 금속구리의 결정상이 석출됨을 알 수 있었고, TEM에 의해 석출상의 크기는 수~20nm 정도임을 알 수 있었다. 또한 570nm에서의 광흡수 피크로부터도 금속구리의 석출을 확인할 수 있었다. 석출입자의 크기와 흡광은 석출을 위한 열처리 온도와 시간이 증가함에 따라 증가하였다. XPS 스펙트럼으로는 구리의 산화상태 중 Cu$^{2+}$ 이온의 상태만을 분명히 할 수 있었다. 매질유리의 BO/NBO의 비는 열처리 전후 크게 변화가 없었으며, 열처리 후 Cu$^{2+}$ 이온이 다소 감소되는 경향을 보였다.

키워드

참고문헌

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