The influence of atmosphere on the performance of pure-phase WZ and ZB InAs nanowire transistors
Ullah, A. R.; Joyce, Hannah J; Tan, Hoe; Jagadish, Chennupati; Micolich, Adam Paul
We compare the characteristics of phase-pure MOCVD grown ZB and WZ InAs nanowire transistors in several atmospheres: air, dry pure N2 and O2, and N2 bubbled through liquid H2O and alcohols to identify whether phase-related structural/surface differences affect their response. Both WZ and ZB give poor gate characteristics in dry state. Adsorption of polar species reduces off-current by 2–3 orders of magnitude, increases on–off ratio and significantly reduces sub-threshold slope. The key...[Show more]
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