Abstract
Nano Zn
0.75
Cd
0.25
S and Zn
0.65
Cd
0.25
M
0.1
S (M = Co, Fe, Mn, V) doped 70%PVA/30%PVP polymer blends were formed. The synchrotron x-ray diffraction was employed to investigate the nature of the nanofiller. Rietveld analysis of x-ray diffraction data revealed a single ZnS phase for the nanofillers and confirmed the inclusion of the M-metal into the ZnS lattice. SEM images of PVA/PVP doped blends revealed uniform film morphology and nanofiller distribution. The highest transmittance (90%) was observed in the undoped blend at the visible region, and it decreased as the PVA/PVP doped with the nanofiller reached its minimum value (15%) as the blend doped with Zn
0.75
Cd
0.25
S (ZCS). The refractive index value of blended polymer changed in the order
0.75
0.25
ZCS > ZCS/Co > ZCS/Mn > ZCS/V > ZCS/Fe > undoped blended polymer at 600 nm. The highest dielectric values were observed in PVA/PVP blend doped with ZSC/Mn or ZSC/Co. The nonlinear optical parameters reached their highest value in UV and visible regions as the blended polymer doped with ZSC/Mn and ZCS, respectively. The emitted colors of different blended polymers and their intensities were depended on the kind of nanofillers and the excitation wavelengths.