Preparation and optical characterization of the new polymer nanocomposites

Abstract

The polymer nanocomposites consisting of polyvinylalcohol (PVA) and chalcogenide non-crystalline semiconductors (ChNS) as arsenic selenide (As2Se3) and arsenic sulfide (As2S3) were obtained. The optical absorption was investigated for thin films of polymer-ChNS composites in the spectrum range of 0.3 – 3 μm at different concentration of ChNS and ultraviolet (UV) irradiation doses. We found that composites show in the spectrum the infrared (IR) shift of absorption edge. The UV irradiation leads to photodarkening of nanocomposites practically in all scanned spectrum range.