Recent Progress in Ohmic/Schottky-Contacted ZnO Nanowire Sensors

Figure 6

Piezopotential in wurtzite crystal. (a) Atomic model of the wurtzite structured ZnO. (b) Aligned ZnO nanowire arrays by solution based approach. Numerical calculated distribution of piezoelectric potential along a ZnO NW under axial strain. The growth direction of the NW is -axis. The dimensions of the NW are  nm and  nm; the external force is  nN. (c) Band diagram of a Schottky-contacted M-S (n-type) interface. (d) Band diagram of the Schottky-contacted after applying a strain in the semiconductor. The piezopotential created in the semiconductor has a polarity with the end in contacting with the metal being low [62, 76]. Copyright 2012, John Wiley and Sons.

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