@article {Nandy2013,
	title = {{Current transport mechanism at metal-semiconductor nanoscale interfaces based on ultrahigh density arrays of p-type NiO nano-pillars.}},
	journal = {Nanoscale},
	volume = {5},
	number = {23},
	year = {2013},
	note = {n/a},
	pages = {11699{\textendash}709},
	abstract = {<p>The present work focuses on a qualitative analysis of localised I-V characteristics based on the nanostructure morphology of highly dense arrays of p-type NiO nano-pillars (NiO-NPs). Vertically aligned NiO-NPs have been grown on different substrates by using a glancing angle deposition (GLAD) technique. The preferred orientation of as grown NiO-NPs was controlled by the deposition pressure. The NiO-NPs displayed a polar surface with a microscopic dipole moment along the (111) plane (Tasker{\textquoteright}s type III). Consequently, the crystal plane dependent surface electron accumulation layer and the lattice disorder at the grain boundary interface showed a non-uniform current distribution throughout the sample surface, demonstrated by a conducting AFM technique (c-AFM). The variation in I-V for different points in a single current distribution grain (CD-grain) has been attributed to the variation of Schottky barrier height (SBH) at the metal-semiconductor (M-S) interface. Furthermore, we observed that the strain produced during the NiO-NPs growth can modulate the SBH. Inbound strain acts as an external field to influence the local electric field at the M-S interface causing a variation in SBH with the NPs orientation. This paper shows that vertical arrays of NiO-NPs are potential candidates for nanoscale devices because they have a great impact on the local current transport mechanism due to its nanostructure morphology.</p>
},
	issn = {2040-3372},
	doi = {10.1039/c3nr03803c},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/24104857},
	author = {Nandy, Suman and Gon{\c c}alves, Gon{\c c}alo and Pinto, Joana Vaz and Busani, Tito and Figueiredo, Vitor and Pereira, Lu\'{\i}s and {Paiva Martins}, Rodrigo Ferr{\~a}o and Fortunato, Elvira}
}
