Vol. 7, Issue 1, Part C (2025)

In this work, thermal evaporation is used to generate (Bi2O3) nanofilms doped with Cu nanoparticles (0.006 weight percent) that are coated onto glass substrates at thicknesses of 75, 100, and 125 nm. In the wavelength range of 300-1100 nm, optical measurements of the films are examined using a UV-Visible spectrophotometer. It was found that the transmittance reduced as the film thickness grew, but the absorbance increased. The optical properties are strongly affected by the layer thickness, according to the results of the absorption and extinction coefficients.