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Mokhotjwa Simon Dhalamini,email@example.com,UNISA
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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>
We report on the (micro)-structural, optical, morphological, surface state and magnetic characteristics of un-doped and rare earth (RE) doped zinc oxide (ZnO) 0-dimension (0D) semiconductor nanostructures, which were successfully synthesized via a facile sol-gel process. The optical investigation of as-synthesized samples as revealed by optical absorption spectroscopy showed a blue shift of the absorption band-edge as compared to the bulk material, which could be an effective indication of quantum confinement effect. From the transmission electron microscopy (TEM) results, it was observed a morphological change as the dopant concentration was increased probably due to the Ostwald ripening effect; furthermore, the highly crystalline nature of the synthesized 0D nanostructures was confirmed. Finally, defects state in the semiconductor nanostructures was studied using photoluminescence (PL) spectroscopy, x-ray photoelectron spectroscopy (XPS) and Electron Spin resonance (ESR).
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