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High‐quality zinc oxide (ZnO) nanotubes (NTs) were grown by the hydrothermal technique on n‐Si substrate. The room temperature (RT) current‐transport mechanisms of Au Schottky diodes fabricated from ZnO NTs and nanorods (NRs) reference samples have been studied and compared. The tunneling mechanisms via deep‐level states was found to be the main conduction process at low applied voltage but at the...
We present a scanning tunneling microscopy and spectroscopy (STM–STS) investigation of the effects of ultra high vacuum annealing and oxygen exposure onto ZnO nanoribbons synthesised by chemical vapour deposition. STM imaging revealed a width to height ratio for the nanoribbons between 2:1 and 3:1 and average width and height of 90 and 40 nm, respectively. Imaging before annealing showed the presence...
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