Abstract
A magnesium-doped cobalt trioxide (Co3O4) film is fabricated on an indium tin oxide (ITO) substrate by sol-gel spin coating method. The microstructure and optics of the pristine and Mg-doped Co3O4 films and are analyzed using X-ray diffraction, scanning electron microscopy, and spectrophotometers. From electrochromic outcomes, at 250 °C annealing temperature, the transmittance of a 3 at% Mg-doped Co3O4 film can be increased by 12.32%, and the optical modulation amplitude can reach 1.71 times that of a pure Co3O4 film. Current work shows that incorporating Mg in Co3O4 improves its electrochromic and capacitive properties.
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