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5 March 2020 UV nanophotodetector based on a single ZnO:Au nanowire functionalized with Au-nanoparticles
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Proceedings Volume 11281, Oxide-based Materials and Devices XI; 112812C (2020) https://doi.org/10.1117/12.2548136
Event: SPIE OPTO, 2020, San Francisco, California, United States
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.
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
V. Postica, Th. Pauporté, B. Viana, H. Cavers, M. Hoppe, R. Adelung, and O. Lupan "UV nanophotodetector based on a single ZnO:Au nanowire functionalized with Au-nanoparticles", Proc. SPIE 11281, Oxide-based Materials and Devices XI, 112812C (5 March 2020); https://doi.org/10.1117/12.2548136
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