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Zinc oxide nanostructures:the effect of deposition parameters on the electrical properties usig sol-gel method

Kamaruddin, Sharul Ashikin (2008) Zinc oxide nanostructures:the effect of deposition parameters on the electrical properties usig sol-gel method. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

Nanostructured Zinc Oxide (ZnO) has been deposited on Silicon Dioxide (Si02) using sol-gel method. The Si02 was grown on Silicon (Si) using dry oxidation process in 1 atm ambient. In sol-gel method. a lot of deposition parameters need to be considered to remain the uniformity and reproducibility. Any small changes in the deposition parameters will affect the surface morphologies, electrical properties and optical properties as well. This research is done to study the deposition parameters on the electrical properties and supported by the surface morphologies and optical properties which have strong correlation. There are four deposition method have been focused in this study which are the immerse time, Si02 thickness, annealing temperature and the precursor solution concentration. The results have been characterized using scanning electron microscope (SEM) for the structural properties, X-ray diffractometer (XRD) for the growth orientation and IV measurement system for the electrical properties. The optical properties have been characterized using photoluminescence and UV -VIS spectrometer. Immerse time at 3 hours shows optimum electrical IV response. The Si02 thickness when oxidized at 5 minutes has optimum structural, electrical and optical propcl1ics. Annealing the sample at 500°C has the optimum IV response but for the optical properties, the best annealing temperature is at 550°C. The precursor solution concentration at 0.0001 M has optimum IV response but for the optimum optical properties, 0.01 M has the best response. At the end of this study, the optimized deposition parameters in sol-gel method to deposit nanostructured ZnO has been obtained. The result will be a contribution for the next researcher to study other parameters using sol-gel method.

Item Type: Thesis (Masters)
Subjects: T Technology > TP Chemical technology > TP1-154 Chemical technology
Depositing User: M.Iqbal Zainal A
Date Deposited: 20 Apr 2011 01:43
Last Modified: 29 Apr 2011 06:42
URI: http://eprints.uthm.edu.my/id/eprint/1026
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