How does current vary with the applied potential difference across ZnO wire?
If you have any article related to this question kindly share it with me.
Based on this paper, ZnO wires give Ohmic (linear current-voltage relationship) behaviour when the electrical contacts between the wire and supply are properly made:
https://arxiv.org/ftp/arxiv/papers/1512/1512.07321.pdf
Ohmic contacts or schottky barriers can be fabricated based on the conditions under which contacts are made.
This review should give you a comprehensive idea:
Article ZnO Schottky Barriers and Ohmic Contacts
Hi,
This is an interesting question. The answer depends on the presence of defects in the ZnO crystal. Most of the surface defects acts as leaky paths for the currents in a Schottky junction. Therefore, one may not get good rectifying current nature. These defects are also responsible for barrier inhomogeneities at the interfaces which affects the ideality factor, barrier height and richardson constant of ZnO.
http://iopscience.iop.org/article/10.1088/0022-3727/49/14/145105/pdf
The answer for your question defects on the quality of the nanowires you prepare.
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