Improved electro-optical properties of sol-gel-processed zirconium strontium tin oxide thin film containing graphene oxide

We investigated enhancing the electro-optical properties of thin films by doping them with graphene oxide (GO) following the fabrication of a zirconium strontium tin oxide solution via the sol-gel method. GO was doped into inorganic materials at 0, 5, and 15 wt%, respectively. The characteristics of the resulting thin films were analyzed based on doping ratio. Our study confirmed significant improvements in electrical properties through accelerated reaction speeds via response time vs. transmission measurements and notably enhanced T90 transmittance values in voltage-transmission measurements. X-ray photoelectron spectroscopy was employed to analyze the chemical composition of the thin film surfaces, revealing the impact of graphene's carbon isomer nature and the oxygen environment. Furthermore, changes in surface roughness were assessed using atomic force microscopy, validating the alterations in properties. Finally, the thin film's suitability for display devices was confirmed through transmittance measurements.