Abstract
The implantation of high-density polyethylene (HDPE) has been conducted using Ag+ ions with energy of 60 keV, achieved fluences 1.5 and 10?1015 ions/cm2. Transmission electron microscopy (STEM) and field emission gun - scanning electron microscopy (FEG-SEM) showed the existence of nanoparticle clusters. X ray photoelectron spectroscopy (XPS) revealed the presence of silver in the sample surface region. The surface topography was studied by atomic force microscopy (AFM), while the surface composition uniformity was analyzed using phase imaging AFM. Optical characterization obtained by spectroscopic ellipsometry (SE) showed changes in refractive index, extinction coefficient and the optical band gap with the fluence of implanted ions.
Highlights
For devices possessing optical properties, control of projected range and cluster size of implanted ion species, with refractive indexes of the changed surface is of major importance and determines their optical behavior
We investigate the effect of Ag ions implantation on optical band gap energy in high-density polyethylene (HDPE)/Ag system using spectroscopic ellipsometry (SE)
It is performed by the method HAADF/STEM: high-angle annular dark field/scanning transmission electron microscopy that revealed the existence of spherical nanoparticles with diameter in the range from 5 to 10 nm (Fig. 1a and b)
Summary
For devices possessing optical properties, control of projected range and cluster size of implanted ion species, with refractive indexes of the changed surface is of major importance and determines their optical behavior These functional materials properties can be controlled by changing the fluence and implantation energy. We investigate the effect of Ag ions implantation on optical band gap energy in HDPE/Ag system using spectroscopic ellipsometry (SE) This powerful and nondestructive technique is suitable to investigate the optical response of materials, to measure simultaneously the thickness and dielectric function of a metal – polymer system. The two experimental quantities which are directly obtained through this technique are angles ψ and Δ These parameters indicate the relative changes of the amplitude and the phase of a linearly polarized monochromatic incident light upon an oblique reflection from a sample surface. Sheet was cut into 2 x 2 cm samples and they were placed in the implantation chamber
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