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|Title:||Functionalized horizontally aligned CNT array and random CNT network for CO2 sensing||Authors:||Wang, Yanrong
|Issue Date:||2017||Source:||Wang, Y., Zhang, K., Zou, J., Wang, X., Sun, L., Wang, T., et al. (2017). Functionalized horizontally aligned CNT array and random CNT network for CO2 sensing. Carbon, 117, 263-270.||Series/Report no.:||Carbon||Abstract:||Horizontally aligned and density-controlled single-wall carbon nanotubes (CNT) represent attractive building blocks for nanoelectronics. In this paper, horizontally aligned CNT arrays and random CNT network are synthesized by thermal CVD at 925 °C in an ethanol atmosphere. With appropriate functionalization applied to the aligned CNTs, a high sensitivity of 8.48% for ambient CO2 gas concentration of 500 ppm is achieved. In addition, these aligned CNT array sensors show much faster response and recovery time than a random CNT network. Moreover, good selectivity against NO2 and NH3, and good repeatability are demonstrated. These results pave the way for a deeper understanding of the physical and electrical properties of single-wall CNT and inter-tube junctions, which could be helpful in designing and optimizing as-grown single-wall CNT for gas sensor and other nanoelectronic devices.||URI:||https://hdl.handle.net/10356/86048
|ISSN:||0008-6223||DOI:||10.1016/j.carbon.2017.03.012||Rights:||© 2017 Elsevier Ltd.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||EEE Journal Articles|
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