title: Effect of annealing temperature on electrochemical luminescence properties of nanoporous fluorine-doped tin oxide films.
abstract: Nanoporous Fluorine-doped tin oxide (FTO) materials were synthesized by sol-gel combustion method for electrochemical luminescence (ECL) application. The influence of annealing temperature on the structures and morphology of the nanoporous FTO films was examined by X-ray diffraction (XRD), atomic force microscopy (AFM), optical transmittance and BET specific surface measurements. The naoporous FTO-based ECL cell is composed of FTO glass/nanoporous FTO/Ru(bpy)2+ electrolyte/FTO glass. The peak intensity of emitting light from the cell was obtained at the wavelength of about 615 nm, which corresponds to dark orange color. At 5 V bias, ECL efficiency of the cell using the 550 degrees C annealed FTO was about 975 cd/m2, which is much higher than those of other cells. The result shows that the nanoporous FTO layer was more effective for increasing ECL intensities. The sol-gel combustion method at annealing temperature of 550 degrees C could be employed to synthesize the nanoporous FTO materials with high porosity and ECL performance.
authors.affiliation: Electrical Engineering, Kyungsung University, Busan 608-736, Korea.
authors.forename: Bong-Hyun
authors.initials: BH
authors.lastname: Joo
authors.forename: Seog-Young
authors.initials: SY
authors.lastname: Yoon
authors.forename: Youl-Moon
authors.initials: YM
authors.lastname: Sung