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Fabrication of Rectification Nanosensors by Direct Current Dielectrophoresis Alignment of ZnO Nanowires
This work demonstrates the fabrication and characterization of ZnO nanowire-based devices in a metal–nanowire–metal configuration using the direct current dielectrophoresis alignment across Au electrodes. The current–voltage characteristics of the devices revealed that they were rectifying, and the...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8134615/ https://www.ncbi.nlm.nih.gov/pubmed/34009503 http://dx.doi.org/10.1186/s11671-021-03539-6 |
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author | Sun, Kai-Heng Chien, Wen-Ching Hsu, Hsun-Feng |
author_facet | Sun, Kai-Heng Chien, Wen-Ching Hsu, Hsun-Feng |
author_sort | Sun, Kai-Heng |
collection | PubMed |
description | This work demonstrates the fabrication and characterization of ZnO nanowire-based devices in a metal–nanowire–metal configuration using the direct current dielectrophoresis alignment across Au electrodes. The current–voltage characteristics of the devices revealed that they were rectifying, and the direction of rectification was determined by the direction of current due to the asymmetric Joule heating in the dielectrophoresis alignment process. Joule heating caused the Au atoms to diffuse from the Au electrodes to the inner ZnO NWs and the formation of Schottky contact at the Au/ZnO interface. A fast and sensitive photoresponse was achieved for the rectifying devices in reverse-biased mode due to the carrier injection and photocurrent gain under UV illumination. Such direct current dielectrophoresis alignment of ZnO nanowires is a facile method for fabricating rectification devices with application in sensitive and fast UV detecting sensors. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s11671-021-03539-6. |
format | Online Article Text |
id | pubmed-8134615 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-81346152021-05-20 Fabrication of Rectification Nanosensors by Direct Current Dielectrophoresis Alignment of ZnO Nanowires Sun, Kai-Heng Chien, Wen-Ching Hsu, Hsun-Feng Nanoscale Res Lett Nano Express This work demonstrates the fabrication and characterization of ZnO nanowire-based devices in a metal–nanowire–metal configuration using the direct current dielectrophoresis alignment across Au electrodes. The current–voltage characteristics of the devices revealed that they were rectifying, and the direction of rectification was determined by the direction of current due to the asymmetric Joule heating in the dielectrophoresis alignment process. Joule heating caused the Au atoms to diffuse from the Au electrodes to the inner ZnO NWs and the formation of Schottky contact at the Au/ZnO interface. A fast and sensitive photoresponse was achieved for the rectifying devices in reverse-biased mode due to the carrier injection and photocurrent gain under UV illumination. Such direct current dielectrophoresis alignment of ZnO nanowires is a facile method for fabricating rectification devices with application in sensitive and fast UV detecting sensors. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s11671-021-03539-6. Springer US 2021-05-19 /pmc/articles/PMC8134615/ /pubmed/34009503 http://dx.doi.org/10.1186/s11671-021-03539-6 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Nano Express Sun, Kai-Heng Chien, Wen-Ching Hsu, Hsun-Feng Fabrication of Rectification Nanosensors by Direct Current Dielectrophoresis Alignment of ZnO Nanowires |
title | Fabrication of Rectification Nanosensors by Direct Current Dielectrophoresis Alignment of ZnO Nanowires |
title_full | Fabrication of Rectification Nanosensors by Direct Current Dielectrophoresis Alignment of ZnO Nanowires |
title_fullStr | Fabrication of Rectification Nanosensors by Direct Current Dielectrophoresis Alignment of ZnO Nanowires |
title_full_unstemmed | Fabrication of Rectification Nanosensors by Direct Current Dielectrophoresis Alignment of ZnO Nanowires |
title_short | Fabrication of Rectification Nanosensors by Direct Current Dielectrophoresis Alignment of ZnO Nanowires |
title_sort | fabrication of rectification nanosensors by direct current dielectrophoresis alignment of zno nanowires |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8134615/ https://www.ncbi.nlm.nih.gov/pubmed/34009503 http://dx.doi.org/10.1186/s11671-021-03539-6 |
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