"Dragging mode" electrohydrodynamic jet printing of polymer-wrapped semiconducting single-walled carbon nanotubes for NO gas-sensing field-effect transistors

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 favora...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2021-11, Vol.9 (44), p.1584-15812
Main Authors: Tang, Xiaowu, Girma, Henok Getachew, Li, Zhijun, Hong, Jisu, Lim, Bogyu, Jung, Seo-Hyun, Kim, Yejin, Nam, Sang Yong, Kim, Kyunghun, Kong, Hoyoul, Kim, Se Hyun
Format: Article
Language:English
Subjects:
Ammonia
Electrohydrodynamics
Ethanol
Field effect transistors
Gas sensors
Gases
Jet printing
Polymers
Selectivity
Semiconductor devices
Sensors
Single wall carbon nanotubes
Threshold voltage
Transistors
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Summary: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 ∼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. 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).
ISSN:2050-7526
2050-7534
DOI:10.1039/d1tc04638a