Nanocrystalline CdS thin films were deposited by the simple CBD method from an acidic solution (pH=5.0) with varied solution temperatures from 25 to 75 ◦C. The obtained films were homogeneous, strongly adherent, and present high optical transmission with an energy gap value of about 3.90 eV. Transmittance measurements of CdS thin films clearly show a shifting of the band gap energy with bath temperature.
