Speaker
Mr
Olakunle Oluwaleye
(University of South Africa)
Description
Transparent conducting oxide (TCO) thin films exhibit co-existence of electronic conductivity and transparency. These unique properties enable TCOs to be applicable in optoelectronic and other nanodevices. Indium Tin Oxide (ITO) based TCO thin films have been used extensively in many applications, such as solar cells [1]. In particular, ITO has been a choice in flat panel displays as one of its electrodes. The major advantages of ITO are low resistivity, high transmission of visible light and high free carrier density that contributes to its relatively low electrical resistivity [2].
Modification of ITO thin films on polymer substrates using transition metal ion beams is rarely reported in literature. Therefore, to develop better dilute magnetic semiconductor (DMSs) for the improvement of spintronic devices, it is important to investigate dependence of optical and magnetic
propertises of ITO thin films on Cobalt ion beam implantation.
In this work, studies of ion beam induced modification in ITO thin films used in optoelectronics will be presented. These films were deposited on flexible polyethylene terephthalate (PET) substrate. The ITO thin film samples were implanted with Co+ ions at different keV energies and fluences. Optical and magnetic properties of pristine and implanted samples, characterized by X-ray diffraction (XRD), UV-Visible Spectroscopy, Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM), will be presented.
References
[1] Andreas Stadler. Transparent Conducting Oxides An Up-To-Date Overview.www.mdpi.com/journal/materials, 5:661–683, 2012.
[2] V. Gokulakrishnan et al. Effects of O7+ swift heavy ion irradiation on indium oxide thin films.
Nucl. Instrum. and Methods, B269:1836–1840, 2011.
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
PhD
Apply to be<br> considered for a student <br> award (Yes / No)?
Yes
Main supervisor (name and email)<br>and his / her institution
Name:S.J. Moloi
Email:moloisj@unisa.ac.za
Department of Physics
The Science Campus
Private Bag X 6
Florida, 1710
University of South Africa
Cnr. Christian de Wet Rd & Pioneer Avenue
Roodepoort, South Africa
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
Yes
Primary author
Mr
Olakunle Oluwaleye
(University of South Africa)
Co-authors
Dr
Bonex Mwakikunga
(CSIR, National Centre for Nano-Structured Materials, Pretoria, South Africa)
Dr
J. Sabata Moloi
(University of South Africa)
Dr
Mogan Madhuku
(NRF-IThemba Labs (Gauteng), Johannesburg, South Africa)
