Recent Progress in Ohmic/Schottky-Contacted ZnO Nanowire Sensors

Figure 8

(a) Three-dimensional structure model of a ZnO-CdS core shell wire, showing the structure relationship between ZnO wire core and CdS nanowire array shell. (b) Typical IV characteristics of a single ZnO-CdS wire-based device under different compressive strains, excited by UV light centered at 372 nm. (c) The change of responsivity under compressive strains, excited by green light centered at 548 nm and UV light centered at 372 nm; is set as responsivity under zero strain. (d) The derived change in SBH as a function of compressive strains using the thermionic emission diffusion model. Black curve and red curve are the SBH change for source contact and drain contact at a source drain bias of and −2 V, respectively [68]. Copyright 2012, American Chemical Society.

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