Engineering the optical properties of PVA/PVP polymeric blend in situ using tin sulfide for optoelectronics

In the present work, the optical properties of polyvinyl alcohol (PVA)/polyvinyl pyrrolidone (PVP) (1:1) polymeric blend have been tuned in situ using tin sulfide (SnS) semiconductor for optoelectronics. The solution casting technique was used to prepare plain PVA/PVP polymeric blend and different weight ratios percentages (x: 0, 0.1, 0.5, 1.0, 5.0 and 10.0 wt%) of SnS filled PVA/PVP polymeric blend nanocomposite films. The prepared films were characterized using a scanning electron microscope, X-ray diffractometer, FT-IR spectroscopic technique and UV-visible-NIR spectrophotometer. The effect of SnS concentration on the optical parameters (optical energy gap, refractive index, optical conductivity, dielectric constants, dispersion energy and average oscillator strength) has been investigated. The ability to tune the optical parameters of the prepared SnS nanocomposite polymeric blend films makes them effective candidates in many applications especially optoelectronics and optical devices.