| Title |
Fabrication of High-Efficiency Electrochemiluminescence Cell with Nanocrystalline TiO2 Electrode |
| Authors |
권혁문(Kwon, Hyuk-Moon) ; 한치환(Han, Chi-Hwan) ; 성열문(Sung, Youl-Moon) |
| Keywords |
ECL ; Nanocrystalline TiO_2 electrode ; Ru(II) complex ; Sol-gel combustion method |
| 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 (~10μm thickness) with large surface area (~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. |