جۆری توێژینه‌وه‌: Original Article

نوسه‌ران

1 Physics Department, College of education, Garmian University, Kurdistan Region, Iraq.

2 Physics Department, College of education, Garmian University, Kurdistan Region, Iraq

پوخته‌

Optical and structural properties of composite films are studied with the effect of Cu
nanoparticles doped in PVA. Samples are PVA films of (0.13 mm) thickness are doped with
different concentrations of Cu nanoparticles. The nano-composite samples are prepared by the
well-known solution cast method. Cu nanoparticles are prepared by laser ablation method using
Nd-Yag laser in pure water. Using the absorbance and transmittance of the samples, the effect of
doped nanoparticles and their concentration on optical parameters of PVA films including
absorption coefficient, optical band gap energy, complex refractive index, complex dielectric
function, before and after annealing are extracted and discussed. Studying the effect of Cu
nanoparticles on the optical parameters gives an indication that all these parameters are affected.
Also the optical properties of the films are highly affected by annealing. Cu–O bonds are formed
in the films and the band gap energy of samples is decreased. Structural properties are studied
using X-ray diffraction spectrum. The results show that by doping Cu nanoparticles in PVA, The
intensity of diffracted X-ray photons from films has been increased noticeably after the doping
process.

وشه‌ بنچینه‌ییه‌كان

 

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