Abstract
In this article, the governing equation on electric potential is established by coupling both the semiconducting characteristics and the piezo-effect property of a ZnO nanowire (ZNW). Carrier redistributions are solved for different doping concentrations while considering the effect of both types of charge carriers. The reason for the semiconducting characteristics of a ZNW to induce electric leakage in energy-harvesting is illustrated in detail and a proper initial carrier concentration, n0 or p0 , is obtained as follows: for a n-type ZnO fiber and for a p-type one under the intrinsic carrier concentration ni = 1.0×1016(1/m3) , which is of significance in both the design and the practical applications of piezotronics and piezo-phototropic devices.
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