Preparation and Investigation of Optical Properties of Tungsten-doped VO2

VO2 thin film is deposited on glass substrate by using spin-coating technique. Tungsten (W) has been doped as acidic solution to the precursor of vanadium solution. Energy gap has been investigated via absorption coefficient to explore its value with and without W doping. Reflectance spectroscopy results showed that there is a clear difference using few percentages of W doping. Optical transmissions have found for undoped and W-doped VO2 thin film are approximately 75% and 35%, respectively. Empirical models of refractive index and optical dielectric constant are investigated.

Automated summary

The VO2 thin film was deposited on a glass substrate using the spin-coating technique, with tungsten doped as an acidic solution to the vanadium precursor. The study investigated the energy gap and optical properties of the film with and without tungsten doping, showing significant differences in optical transmissions with tungsten doping. Empirical models of refractive index and optical dielectric constant were also explored in the research.