Electrical properties of single CuO nanowires for device fabrication: Diodes and field effect transistors

Journal Article · Mon Jun 01 04:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4921914· OSTI ID:22423747

Florica, Camelia; Costas, Andreea; Boni, Andra Georgia; Negrea, Raluca; Preda, Nicoleta; Pintilie, Lucian; Enculescu, Ionut ^[1]; Ion, Lucian ^[2]

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1. National Institute of Materials Physics, P.O. Box MG-7, Bucharest, Magurele 077125 (Romania)
2. Faculty of Physics, University of Bucharest, Atomistilor Street 103, Magurele, Ilfov 77125 (Romania)

High aspect ratio CuO nanowires are synthesized by a simple and scalable method, thermal oxidation in air. The structural, morphological, optical, and electrical properties of the semiconducting nanowires were studied. Au-Ti/CuO nanowire and Pt/CuO nanowire electrical contacts were investigated. A dominant Schottky mechanism was evidenced in the Au-Ti/CuO nanowire junction and an ohmic behavior was observed for the Pt/CuO nanowire junction. The Pt/CuO nanowire/Pt structure allows the measurements of the intrinsic transport properties of the single CuO nanowires. It was found that an activation mechanism describes the behavior at higher temperatures, while a nearest neighbor hopping transport mechanism is characteristic at low temperatures. This was also confirmed by four-probe resistivity measurements on the single CuO nanowires. By changing the metal/semiconductor interface, devices such as Schottky diodes and field effect transistors based on single CuO p-type nanowire semiconductor channel are obtained. These devices are suitable for being used in various electronic circuits where their size related properties can be exploited.

• OSTI ID: 22423747
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 22 Vol. 106; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
ASPECT RATIO
COPPER OXIDES
ELECTRIC CONTACTS
ELECTRICAL PROPERTIES
FIELD EFFECT TRANSISTORS
GOLD
NANOWIRES
PLATINUM
SCHOTTKY BARRIER DIODES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR MATERIALS
TITANIUM