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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:23 |
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Conference: Bucharest University Faculty of Physics 2024 Meeting
Section: Solid State Physics and Materials Science
Title:
ZnO nanowires: preparation, characterization and application in electronic devices
Authors:
Alexandra Karina Gheorghe (1), Andreea Costas (1), Nicoleta Preda (1), Ionut Enculescu (1)
Affiliation:
1) National Institute of Material Physics, 405A Atomistilor Street, 077125, Magurele, Romania
E-mail
andreea.costas@infim.ro
Keywords:
ZnO nanowires, thermal oxidation in air, lithographic techniques, electronic devices
Abstract:
Lately, an increased research interest was focused on the preparation of metal oxide nanowire arrays due to their potential use in the development of innovative and miniaturized electronic devices with novel properties and functionalities determined by their one-dimensional morphology [1-3]. In order to optimize the electronic device performance and reliability there is still a significant need for the investigation of the semiconductor material used. One of the most popular semiconductor nanowires, ZnO nanowires have received extensive attention due to their unique electrical, optical, piezoelectric and thermoelectric properties and multiple wet and dry preparation routes, making them the perfect candidates for integration in optoelectronic devices, energy harvesting, sensors, etc. In this work, ZnO nanowire arrays were obtained using a cost-effective straightforward route, thermal oxidation in air. The structural, morphological, compositional and optical properties of the ZnO nanowire arrays were analyzed and discussed in detail using X-ray diffraction, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, and reflectance. Additionally, current-voltage measurements were performed to assess their potential use in optoelectronic applications.
References:
[1] A Costas, C. Florica, N. Preda, C. Besleaga, A. Kuncser, I. Enculescu, Self-connected CuO-ZnO radial core-shell heterojunction nanowire arrays grown on interdigitated electrodes for visible-light photodetectors, Sci. Rep. 12, 6834, 2022.
[2] Bo Zhang, Yi Xia, Shuai Zhang, Yin Xu, Yue Dong, Pingping Yu, Yi Ni, Qufu Wei, Lanlan Guo, Jing Wang, ZnO Nanowires with Increasing Aspect Ratios for Room-Temperature NO2 Gas Sensing, ACS Appl. Nano Mater. 5, 10603-10616, 2022.
[3] A. Costas, C. Florica, N. Preda, A. Kuncser, I. Enculescu, Photodetecting properties of single CuO-ZnO core-shell nanowires with p-n radial heterojunction, Sci. Rep. 10, 18690, 2020.
Acknowledgement:
This work was supported by two grants of the Romanian Ministry of Research, Innovation and Digitalization CNCS/CCDI-UEFISCDI., Project code: PN-III-P2-2.1-PED-2021-3984 and Project code: 35PFE/2021.
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