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. 2015 Oct 12;5:15123. doi: 10.1038/srep15123

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(a) I–V curve (black) and fitted data (red) of a ZnO NW Schottky device. The inset shows the circuitry of the back-to-back Schottky device. (b) I–V curves of the Schottky device measured at temperatures ranging from 298 to 398 K. (c) Plots of ln(I/T²) versus 1000/T at various applied voltages; the data had been extracted from (b). (d) Values of φ_b plotted with respect to the applied voltage.