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Volume 5, Issue 6 (Suppl) J Mat. Sci.
ISSN: 2321-6212 Advanced Materials 2017
October 26-28, 2017
OCTOBER 26-28, 2017 OSAKA, JAPAN
13TH INTERNATIONAL CONFERENCE ON
Advanced Materials and Nanotechnology
Visible-light nanoscale photoconductivity of grain boundaries in self-supported ZnO platelets
Nastaran Faraji
University of New South Wales, Australia
The response of individual grain boundaries in two dimensional polycrystalline ZnO platelets to visible light illumination is
studied using scanning probe based techniques on the nanoscale. While many previous studies report and discuss the UV
responses of ZnO, we find that even in the visible range of light below the band gap, grain boundaries are sensitive to light, this
can be attributed to defect accumulation at the grain boundaries and associated photo-excitation of carriers. These findings
suggest that engineered grain boundaries can be used for novel optoelectronic applications based on conductive channels in an
otherwise wide-band-gap transparent material.
Biography
Nastaran Faraji is currently pursuing PhD at the University of New South Wales, Australia. Her research interest is performing nanoscale measurements by means
of scanning probe microscopy to investigate the electronic and piezoelectric properties of semiconductor oxides.
Nastaran Faraji, J Mat. Sci. 2017, 5:6
DOI: 10.4172/2321-6212-C1-008