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Radial heterojunction based on single ZnO-Cu_xO core-shell nanowire for photodetector applications.

ABSTRACT: ZnO-Cu_xO core-shell radial heterojunction nanowire arrays were fabricated by a straightforward approach which combine two simple, cost effective and large-scale preparation methods: (i) thermal oxidation in air of a zinc foil for obtaining ZnO nanowire arrays and (ii) radio frequency magnetron sputtering for covering the surface of the ZnO nanowires with a Cu_xO thin film. The structural, compositional, morphological and optical properties of the high aspect ratio ZnO-Cu_xO core-shell nanowire arrays were investigated. Individual ZnO-Cu_xO core-shell nanowires were contacted with Pt electrodes by means of electron beam lithography technique, diode behaviour being demonstrated. Further it was found that these n-p radial heterojunction diodes based on single ZnO-Cu_xO nanowires exhibit a change in the current under UV light illumination and therefore behaving as photodetectors.

SUBMITTER: Costas A

PROVIDER: S-EPMC6447533 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Radial heterojunction based on single ZnO-CuxO core-shell nanowire for photodetector applications.

Costas Andreea A Florica Camelia C Preda Nicoleta N Apostol Nicoleta N Kuncser Andrei A Nitescu Andrei A Enculescu Ionut I

Scientific reports 20190403 1

ZnO-CuxO core-shell radial heterojunction nanowire arrays were fabricated by a straightforward approach which combine two simple, cost effective and large-scale preparation methods: (i) thermal oxidation in air of a zinc foil for obtaining ZnO nanowire arrays and (ii) radio frequency magnetron sputtering for covering the surface of the ZnO nanowires with a CuxO thin film. The structural, compositional, morphological and optical properties of the high aspect ratio ZnO-Cu<sub ...[more]

PMID: 30944366

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