Antimony doped zinc oxide (Sb:ZnO) thin films were successfully deposited on the pre-treated substrate at 60oC using sol-gel dip coating techniques. The effect of pH value on the structural and optical properties of the films were examined using X-ray diffraction (XRD) and spectrophotometer respectively. The optical results revealed that the films have high absorbance in Ultra Violet (UV) region which decrease towards the Near Infra-red (NIR) region. The films have low transmittance in Ultra Violet (UV) region but high transmittance within Near Infra-red (NIR) region. The deposited films have optical bandgap energy range from 2.25-2.50eV for variation in pH value. X-ray diffraction result revealed hexagon phase of zinc oxide with C-axis orientation. XRD result also showed that increase in pH value led to increase in average crystallite size and improved structure. Dislocation densities and microstrain values decreased with increase in pH value. The films have wide energy bandgap which