Zno nanowire field effect transistor for biosensing: A review

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Abstract

The last 19 years have seen intense research made on zinc oxide (ZnO) material mainly due to the ability of converting the natural n-type material into p-type. For a long time, the p-type state was impossible to attain and maintain. The review focuses on ways of improving the doped ZnO material which acts as a channel for nanowire field effect transistor (NWFET) and biosensor. The biosensor has specific binding which is called functionalisation achieved by attaching a variety of compounds on the designated sensing area. Reference electrodes and buffers are used as controllers. Top-down fabrication processes are preferred over bottom-up because they pave way for mass production. Different growth techniques are reviewed and discussed. Strengths and weaknesses of the FET and sensor are also reviewed.

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Ditshego, N. M. J. (2019). Zno nanowire field effect transistor for biosensing: A review. Journal of Nano Research, 60, 94–112. https://doi.org/10.4028/www.scientific.net/JNanoR.60.94

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