22-30 July 2021
North-West University
Africa/Johannesburg timezone
More Information Coming Soon

Characterization of defects in ZnO impanted with Ar+ ions using positron annihilation technique

Not scheduled
20m
Potchefstroom Campus (North-West University)

Potchefstroom Campus

North-West University

Poster Presentation Track A - Physics of Condensed Matter and Materials Physics of Condensed Matter and Materials

Speaker

Mr Musawenkosi Khulu (University of Zululand)

Description

ZnO (wurtzite) samples were implanted with Ar+ ions to generate intrinsic defects within the samples for fluencies ranging from 10^4 to 10^18 per cm. Doppler broadening of the annihilation centroids were obtained to determine S- and W - parameters which are associated with a quantity of defects. X-ray diffraction (XRD) method was employed to determine any structural or phase change associated with Ar+ implantation. The positron annihilation spectroscopy results were correlated with Optical absorption spectra of the crystals to investigate various bands at different fluencies.

Apply to be considered for a student ; award (Yes / No)?

Yes

Level for award;(Hons, MSc, PhD, N/A)?

MSc

Primary authors

Mr Musawenkosi Khulu (University of Zululand) Thulani Jili (University of Zululand) Morgan Madhuku (iThemba LABS) Cebo Ndlangamandla (University of Zululand)

Presentation Materials