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Proceedings Paper

UV nanophotodetector based on a single ZnO:Au nanowire functionalized with Au-nanoparticles
Author(s): V. Postica; Th. Pauporté; B. Viana; H. Cavers; M. Hoppe; R. Adelung; O. Lupan
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Paper Abstract

In this work, an individual nanowire of zinc oxide (ZnO-NW), decorated with gold nanoparticles (Au-NPs/ZnO-NW), was integrated in a nanophotodetector using a dual beam focused electron/ion beam (FIB/SEM) system. Au-NPs/ZnO-NW arrays were synthesized by one-step electrochemical deposition at relative low-temperatures (90 °C). The nanodevice fabricated with a single nanowire Au-NPs/ZnO-NW demonstrated fast detection of UV radiation up to the operating temperature of 120 °C. The improved UV sensing properties of an individual Au-NPs/ZnO-NW compared to a single, undecorated, ZnO NW was explained based on the formation of Schottky barriers at the Au/ZnO NW interface, which resulted in a much more narrowed conduction channel and a lower dark current. These results prove that high-performance hybrid nanomaterials may possess superior electrical, optical and sensing properties and are of great interest for further fundamental studies.

Paper Details

Date Published: 5 March 2020
PDF: 7 pages
Proc. SPIE 11281, Oxide-based Materials and Devices XI, 112812C (5 March 2020); doi: 10.1117/12.2548136
Show Author Affiliations
V. Postica, Technical Univ. of Moldova (Moldova)
Th. Pauporté, PSL Univ., Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris (France)
B. Viana, PSL Univ., Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris (France)
H. Cavers, Kiel Univ. (Germany)
M. Hoppe, Kiel Univ. (Germany)
R. Adelung, Kiel Univ. (Germany)
O. Lupan, Technical Univ. of Moldova (Moldova)
PSL Univ., Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris (France)
Kiel Univ. (Germany)


Published in SPIE Proceedings Vol. 11281:
Oxide-based Materials and Devices XI
David J. Rogers; David C. Look; Ferechteh H. Teherani, Editor(s)

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