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The Assessment for Sensitivity of a NO(2) Gas Sensor with ZnGa(2)O(4)/ZnO Core-Shell Nanowires—a Novel Approach

The application of novel core-shell nanowires composed of ZnGa(2)O(4)/ZnO to improve the sensitivity of NO(2) gas sensors is demonstrated in this study. The growth of ZnGa(2)O(4)/ZnO core-shell nanowires is performed by reactive evaporation on patterned ZnO:Ga/SiO(2)/Si templates at 600 °C. This is...

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Autores principales: Chen, I-Cherng, Lin, Shiu-Shiung, Lin, Tsao-Jen, Hsu, Cheng-Liang, Hsueh, Ting Jen, Shieh, Tien-Yu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274213/
https://www.ncbi.nlm.nih.gov/pubmed/22319286
http://dx.doi.org/10.3390/s100403057
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author Chen, I-Cherng
Lin, Shiu-Shiung
Lin, Tsao-Jen
Hsu, Cheng-Liang
Hsueh, Ting Jen
Shieh, Tien-Yu
author_facet Chen, I-Cherng
Lin, Shiu-Shiung
Lin, Tsao-Jen
Hsu, Cheng-Liang
Hsueh, Ting Jen
Shieh, Tien-Yu
author_sort Chen, I-Cherng
collection PubMed
description The application of novel core-shell nanowires composed of ZnGa(2)O(4)/ZnO to improve the sensitivity of NO(2) gas sensors is demonstrated in this study. The growth of ZnGa(2)O(4)/ZnO core-shell nanowires is performed by reactive evaporation on patterned ZnO:Ga/SiO(2)/Si templates at 600 °C. This is to form the homogeneous structure of the sensors investigated in this report to assess their sensitivity in terms of NO(2) detection. These novel NO(2) gas sensors were evaluated at working temperatures of 25 °C and at 250 °C, respectively. The result reveals the ZnGa(2)O(4)/ZnO core-shell nanowires present a good linear relationship (R(2) > 0.99) between sensitivity and NO(2) concentration at both working temperatures. These core-shell nanowire sensors also possess the highest response (<90 s) and recovery (<120 s) values with greater repeatability seen for NO(2) sensors at room temperature, unlike traditional sensors that only work effectively at much higher temperatures. The data in this study indicates the newly-developed ZnGa(2)O(4)/ZnO core-shell nanowire based sensors are highly promising for industrial applications.
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spelling pubmed-32742132012-02-08 The Assessment for Sensitivity of a NO(2) Gas Sensor with ZnGa(2)O(4)/ZnO Core-Shell Nanowires—a Novel Approach Chen, I-Cherng Lin, Shiu-Shiung Lin, Tsao-Jen Hsu, Cheng-Liang Hsueh, Ting Jen Shieh, Tien-Yu Sensors (Basel) Article The application of novel core-shell nanowires composed of ZnGa(2)O(4)/ZnO to improve the sensitivity of NO(2) gas sensors is demonstrated in this study. The growth of ZnGa(2)O(4)/ZnO core-shell nanowires is performed by reactive evaporation on patterned ZnO:Ga/SiO(2)/Si templates at 600 °C. This is to form the homogeneous structure of the sensors investigated in this report to assess their sensitivity in terms of NO(2) detection. These novel NO(2) gas sensors were evaluated at working temperatures of 25 °C and at 250 °C, respectively. The result reveals the ZnGa(2)O(4)/ZnO core-shell nanowires present a good linear relationship (R(2) > 0.99) between sensitivity and NO(2) concentration at both working temperatures. These core-shell nanowire sensors also possess the highest response (<90 s) and recovery (<120 s) values with greater repeatability seen for NO(2) sensors at room temperature, unlike traditional sensors that only work effectively at much higher temperatures. The data in this study indicates the newly-developed ZnGa(2)O(4)/ZnO core-shell nanowire based sensors are highly promising for industrial applications. Molecular Diversity Preservation International (MDPI) 2010-03-30 /pmc/articles/PMC3274213/ /pubmed/22319286 http://dx.doi.org/10.3390/s100403057 Text en © 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Chen, I-Cherng
Lin, Shiu-Shiung
Lin, Tsao-Jen
Hsu, Cheng-Liang
Hsueh, Ting Jen
Shieh, Tien-Yu
The Assessment for Sensitivity of a NO(2) Gas Sensor with ZnGa(2)O(4)/ZnO Core-Shell Nanowires—a Novel Approach
title The Assessment for Sensitivity of a NO(2) Gas Sensor with ZnGa(2)O(4)/ZnO Core-Shell Nanowires—a Novel Approach
title_full The Assessment for Sensitivity of a NO(2) Gas Sensor with ZnGa(2)O(4)/ZnO Core-Shell Nanowires—a Novel Approach
title_fullStr The Assessment for Sensitivity of a NO(2) Gas Sensor with ZnGa(2)O(4)/ZnO Core-Shell Nanowires—a Novel Approach
title_full_unstemmed The Assessment for Sensitivity of a NO(2) Gas Sensor with ZnGa(2)O(4)/ZnO Core-Shell Nanowires—a Novel Approach
title_short The Assessment for Sensitivity of a NO(2) Gas Sensor with ZnGa(2)O(4)/ZnO Core-Shell Nanowires—a Novel Approach
title_sort assessment for sensitivity of a no(2) gas sensor with znga(2)o(4)/zno core-shell nanowires—a novel approach
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274213/
https://www.ncbi.nlm.nih.gov/pubmed/22319286
http://dx.doi.org/10.3390/s100403057
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