Fabrication of carbon nanotubes/TiO2 nanoparticles electrode-based on electrochemiluminescence (ECL) cell application

In this paper, we fabricate an electrochemical luminescence (ECL) cell with carbon nanotubes/TiO2 nanoparticles (CNT-TNPs) layer and coated on F-doped SnO2 (FTO) glass can be increased the surface area interface with the Ru(II) complex [Ru(bpy)3Cl2]. The investigated ECL cells were composed of FTO glass/ Ru(II) complex [Ru(bpy)32+]/ CNT-TNPs electrode/ FTO glass, which compared TNP and bare FTO electrode. The luminance property of the ECL cell with CNT-TNPs electrode was 59 cd/m2 more than bare FTO electrode up to 61%. Also, the threshold voltage of the light emission from ECL cell was 2.25 V for CNT-TNPs electrode, which was lower than that 2.5 V for TNP, and 3.0 V for bare FTO electrode. The high efficiency of the ECL cell with CNT-TNPs measured at 4 V was 0.13615 lm/W and 0.13137 lm/W, while bare FTO electrode measured at 4.75 V was 0.10213 lm/W. The peak light intensity at wavelength was 622 nm which corresponds to a red-orange color. The use of the CNT-TNPs electrode layer coated on FTO glass significantly improves the light intensity performance.