Author/Authors :
Jameel Tahir, Khawla College of Science - Physics department - Karbala University, Iraq , Al-Yasari, Raja College of Science - Physics department - Karbala University, Iraq
Abstract :
The present paper investigates a detailed study on the optical properties of
PVA/Ag nanocomposite films. In this interest, PVA/Ag nanocomposites
with different ways of study, the first prepared film by reduction 0.2M of
Ag+ ions in 2 gm of PVA and study the transmission absorption coefficient,
refractive index, extinction coefficient, reflection, real & imaginary part
of the dielectric constant and the energy gap. The results proved that the
best values of the absorbency was within the range (350-500) nm, as well
as for both we noticed an increase of the refractive index, the extinction
coefficient and reflectivity with increasing energy, the second step of
research was by using Density Functional Theory (DFT), It was calculate
spectrum absorption, intensity and energy gap for the same compound
PVA/Ag, The cooperation of polyvinyl alcohol (PVA) nanofibers with
silver (Ag) nanoparticles (mean width 8nm) has been displayed utilizing
thickness useful hypothesis (DFT) computations. The physical adsorption
of PVA through the hydroxyl gathering, to the Ag, were calculated by using
DFT theory.
Keywords :
Density Functional Theory , DFT , Optical Properties , Polyvinyl Alcohol , Silver
