Characterization of poly (3-methyl thiophene) thin films prepared by modified chemical bath deposition

► The conventional CBD method was modified for the deposition of P3MeT thin films. ► The variation in oxidant concentration influences the properties of P3MeT thin films. ► Surface morphology becomes smoother with low roughness and reduction in defects. ► The contact angle and band gap decreases where as optical absorbance and refractive index increases with increase in oxidant concentration.