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Fabrication of High-Efficiency Electrochemiluminescence Cell with Nanocrystalline TiO2 Electrode

나노입자 이산화티타늄 전극 기반의 고효율 전기화학형 발광 셀 제작

  • 권혁문 (경성대학교 전기전자공학과) ;
  • 한치환 (한국에너지기술연구원 태양광연구단) ;
  • 성열문 (경성대학교 전기전자공학과)
  • Published : 2010.02.01

Abstract

In this work, electrochemiluminescence (ECL) cell using nanocrysralline $TiO_2$ electrode and Ru(II) complex (Ru${(bpy)_3}^{2+}$) is fabricated for low-cost high-efficient energy conversion device application. The nanocrysrallme $TiO_2$ layer (${\sim}10{\mu}m$ thickness) with large surface area (${\sim}360m^2$/g) can largely inject electrons from nanoporous $TiO_2$ electrode and allows the oxidation/reduction of Ru(II) complex in the nanopores. The cell structure is composed of a glass/ F-doped $SnO_2$(FTO)/ porous $TiO_2$/ Ru(II) complex in acetonitrile/ FTO/ glass. The nanocrysralline $TiO_2$ layer is prepared using sol-gel combustion method. The ECL efficiency of the cell consisting of the porous $TiO_2$ layers was 250 cd/W, which was higher than that consisting of only FTO electrode (50cd/W). The nanoporous $TiO_2$ layers wwas effective for increasine ECL intensities.

Keywords

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