Optical Transmission Spectra of Pb_(0.80) Sr_(0.20) TiO_3/Pb_(0.90) Sr_(0.10) TiO_3 Compositional Graded Ferroelectric Thin Films

Abstract : This study looks at the optical transmission properties of ferroelectric thin films made from two different compositions of lead strontium titanate: and . The films were created using a method called metallo-organic decomposition (MOD) combined with spin coating on quartz substrates. The researchers analyzed the optical properties by recording transmission spectra from 300 to 1500 nm. They found that the films were highly transparent in the longer wavelength range and that their optical characteristics varied significantly with grain size. By deriving the refractive index, extinction coefficient, and absorption coefficient from the spectra, the team demonstrated that these films have promising applications in electro-optic devices, photodetectors, and photonic sensors. Overall, this work showcases the progress made in creating and studying lead strontium titanate thin films, highlighting their versatile optical features.