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Cited 12 time in webofscience Cited 13 time in scopus
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"Dragging mode" electrohydrodynamic jet printing of polymer-wrapped semiconducting single-walled carbon nanotubes for NO gas-sensing field-effect transistors

Authors
Tang, XiaowuGirma, Henok GetachewLi, ZhijunHong, JisuLim, BogyuJung, Seo-HyunKim, YejinNam, Sang YongKim, KyunghunKong, HoyoulKim, Se Hyun
Issue Date
Nov-2021
Publisher
Royal Society of Chemistry
Citation
Journal of Materials Chemistry C, v.9, no.44, pp 15804 - 15812
Pages
9
Indexed
SCIE
SCOPUS
Journal Title
Journal of Materials Chemistry C
Volume
9
Number
44
Start Page
15804
End Page
15812
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/2987
DOI
10.1039/d1tc04638a
ISSN
2050-7526
2050-7534
Abstract
In this study, we investigated facile "dragging mode" electrohydrodynamic (EHD) jet printing of a polymer-wrapped semiconducting single-walled carbon nanotube (s-SWCNT) ink, for fabrication of NO gas-sensing field-effect transistors (FETs). The "dragging mode" provides a favorable environment for reliable printing and interconnection between the s-SWCNTs. Printing parameters such as supply voltages, printing speeds, and the number of prints were manipulated to find an optimal printing condition and obtain high-performance FETs. Under optimal conditions, the polymer-wrapped s-SWCNT-based FETs exhibited an average field-effect mobility of 2.939 cm(2) (V-1 s(-1)), a threshold voltage of 2.21 V, an on/off ratio of similar to 10(3), and a subthreshold swing of 0.968 V dec(-1). Additionally, we demonstrated the application of FETs as NO sensors with high sensitivity and selectivity. The FET-type NO gas sensor exhibits a dynamic sensing range of 500 ppb-30 ppm and clear selectivity among various analyte gases including ethanol, ammonia, and acetone. Therefore, the "dragging mode" EHD jet printing introduced in this study simplifies patterning processes and is a potential reproducible method for the fabrication of next-generation gas sensors.
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공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
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자연과학대학 (화학과)
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