The Optical Properties of Nanoparticle Configurations in Cr/Cr2O3 Composites Synthesized by Pulsed Laser Deposition Method

In this article, we succeeded in identifying the absorption peaks that appear in the optical absorption spectra of chromium oxide thin films prepared by the pulsed laser deposition method. It was found that these peaks belong to the nanostructures in the film (chromium particles and chromium oxide nanoparticles). The study included investigating the effect of each of the substrate temperature and laser fluence on the prepared films. We found that heating the substrate to 327 °C leads to a decrease in the concentration chromium nanoparticles. In addition, we found that increasing the laser fluence to 36.7 J cm−2 leads to a significant increase of both the oxygen content and the chromium nanoparticle concentration in the film.