LAUSR

Abstract PVA composite films with different wt.% of CuCl2, by the cast method, were prepared. The semi-crystalline phases of PVA have been reduced by more addition of CuCl2 as confirmed with the help of X-ray diffraction, and Fourier transforms infrared spectroscopy. The thermal stability is surveyed by differential thermal analysis. The morphology of CuCl2 particles is studied by scanning electron microscopy, which shows the semi-spherical particles of size varied from (0.31–1.19) μm to (3.1–5) μm for 0.037 wt% CuCl2/PVA and 3.700 wt% CuCl2/PVA (CPVA5) films, respectively. With the increment of the additive, the absorptive property of the films is increased. The indirect and direct energy gap were estimated. The power with 632.8 nm and 533 nm of the laser sources has been reduced to 40% and 47% via CPVA5 films. The AC electrical conductivity follows the Jonscher's power law. The forward lnI (A) – lnV (V) behaviors show that the doped films have high voltage breakdown.