Abstract
It is shown that aluminum / polyvinyl alcohol (PVA) with the inclusion of multi-walled carbon nanotubes (MWCNTs) / silicon planar structures demonstrate rectifying properties and their current-voltage characteristics are asymmetric and non-linear. With direct bias, the structures have a positive temperature coefficient of resistance (TCR) in the temperature range of 270-350 K, while the structures without MWCNTs exhibit negative TCR. Under reverse bias, the studied structures with MWCNTs showed TCS changing sign from negative to positive. To explain the obtained dependences, the tunneling mechanism of current transfer is considered.
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