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The assessment for sensitivity of a NO2 gas sensor with ZnGa2O4/ZnO core-shell nanowires--a novel approach.
Sensors (Basel) 2010; 10(4):3057-72S

Abstract

The application of novel core-shell nanowires composed of ZnGa2O4/ZnO to improve the sensitivity of NO2 gas sensors is demonstrated in this study. The growth of ZnGa2O4/ZnO core-shell nanowires is performed by reactive evaporation on patterned ZnO:Ga/SiO2/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 NO2 detection. These novel NO2 gas sensors were evaluated at working temperatures of 25 °C and at 250 °C, respectively. The result reveals the ZnGa2O4/ZnO core-shell nanowires present a good linear relationship (R2>0.99) between sensitivity and NO2 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 NO2 sensors at room temperature, unlike traditional sensors that only work effectively at much higher temperatures. The data in this study indicates the newly-developed ZnGa2O4/ZnO core-shell nanowire based sensors are highly promising for industrial applications.

Authors+Show Affiliations

Micro Systems Technology Center, ITRI South, Industrial Technology Research Institute, Tainan 709, Taiwan. eugenechen@itri.org.twNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22319286

Citation

Chen, I-Cherng, et al. "The Assessment for Sensitivity of a NO2 Gas Sensor With ZnGa2O4/ZnO Core-shell Nanowires--a Novel Approach." Sensors (Basel, Switzerland), vol. 10, no. 4, 2010, pp. 3057-72.
Chen IC, Lin SS, Lin TJ, et al. The assessment for sensitivity of a NO2 gas sensor with ZnGa2O4/ZnO core-shell nanowires--a novel approach. Sensors (Basel). 2010;10(4):3057-72.
Chen, I. C., Lin, S. S., Lin, T. J., Hsu, C. L., Hsueh, T. J., & Shieh, T. Y. (2010). The assessment for sensitivity of a NO2 gas sensor with ZnGa2O4/ZnO core-shell nanowires--a novel approach. Sensors (Basel, Switzerland), 10(4), pp. 3057-72. doi:10.3390/s100403057.
Chen IC, et al. The Assessment for Sensitivity of a NO2 Gas Sensor With ZnGa2O4/ZnO Core-shell Nanowires--a Novel Approach. Sensors (Basel). 2010;10(4):3057-72. PubMed PMID: 22319286.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The assessment for sensitivity of a NO2 gas sensor with ZnGa2O4/ZnO core-shell nanowires--a novel approach. AU - Chen,I-Cherng, AU - Lin,Shiu-Shiung, AU - Lin,Tsao-Jen, AU - Hsu,Cheng-Liang, AU - Hsueh,Ting Jen, AU - Shieh,Tien-Yu, Y1 - 2010/03/30/ PY - 2010/03/15/received PY - 2010/03/23/revised PY - 2010/03/24/accepted PY - 2012/2/10/entrez PY - 2010/1/1/pubmed PY - 2010/1/1/medline KW - NO2 KW - ZnGa2O4 KW - ZnO KW - core shell KW - gas sensor KW - nanowire KW - sensitivity SP - 3057 EP - 72 JF - Sensors (Basel, Switzerland) JO - Sensors (Basel) VL - 10 IS - 4 N2 - The application of novel core-shell nanowires composed of ZnGa2O4/ZnO to improve the sensitivity of NO2 gas sensors is demonstrated in this study. The growth of ZnGa2O4/ZnO core-shell nanowires is performed by reactive evaporation on patterned ZnO:Ga/SiO2/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 NO2 detection. These novel NO2 gas sensors were evaluated at working temperatures of 25 °C and at 250 °C, respectively. The result reveals the ZnGa2O4/ZnO core-shell nanowires present a good linear relationship (R2>0.99) between sensitivity and NO2 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 NO2 sensors at room temperature, unlike traditional sensors that only work effectively at much higher temperatures. The data in this study indicates the newly-developed ZnGa2O4/ZnO core-shell nanowire based sensors are highly promising for industrial applications. SN - 1424-8220 UR - https://www.unboundmedicine.com/medline/citation/22319286/The_assessment_for_sensitivity_of_a_NO2_gas_sensor_with_ZnGa2O4/ZnO_core_shell_nanowires__a_novel_approach_ L2 - http://www.mdpi.com/resolver?pii=s100403057 DB - PRIME DP - Unbound Medicine ER -