Impact of CuCl2 Addition to PMMA Polymer on Structural and Optical Properties

Pure and CuCl2 Poly(methyl methacrylate) (PMMA) films have been prepared by the solution cast method.The morphology of the films was investigated by atomic force microscopy (AFM).The roughness, grain size, and average diameter of the pure and doped samples vary between an increase and a decrease with an increase the doping concentration.The root mean square (RMS) roughness of the dope of copper nanoparticle CuCl2 on the PMMA polymer was studied from 3D AFM images,increases from (5.27) nm to (10.42) nm.The homogeneity of the surface grains rises with the inuction in the value of the roughness rate with an increase in the dope.The optical characteristics of the polymer films were analyzed in the (200-1200) nm wavelength range.The transmittance, absorption coefficient, band gap, and Urbach have been estimated.The value of the energy band gap was 3.72 eV for an an undoped sample and it has been decreased to be (3.3,3.23, and 3.19) eV for (1%, 2% and 3%) of the doping ratio of CuCl2 while Urbach energy was increased after dopping.