Speaker
Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)
Yes
Main supervisor (name and email)<br>and his / her institution
Thuto Mosuang
thuto.mosuang@ul.ac.za
University of Limpopo
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
Yes
Abstract content <br> (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>
Samples of undoped ZnO, Co and In single doped and Co-In co-doped ZnO nanoparticles were prepared using the high energy ball milling method. X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-Vis) and photoluminscence (PL) spectroscopy were employed to characterise the prepared samples. The peaks obtained from the XRD patterns indicated that the samples prepared were of hexagonal ZnO nanoparticles. Additional peaks were reflected within the doped samples belonging to Co+2 and In+3 ions. These peaks indicated that Co+2 and In+3 ions preferred the interstitial site in the hexagonal ZnO structure. The lattice parameters were not significantly affected by the dopant concentration of either Co or In. The average grain sizes of the nanoparticles were found to be reduced when In and Co were incorporated into the ZnO nanoparticles structure. The band gap energies were calculated using the UV-Vis. It was found that the doped ZnO nanoparticles had smaller band gap energy compared to the undoped ZnO nanoparticles. In the PL studies, excitation wavelength of 350 nm was used and various defects related emissions were observed for the doped and undoped ZnO nanoparticles.
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
MSc
Apply to be<br> considered for a student <br> award (Yes / No)?
Yes
