Highly transparent and flexible NO                         2                          gas sensor film based on MoS                         2                         /rGO composites using soft lithographic patterning

Min Wook Jung; Sang Myeoung Kang; Ki Ho Nam; Ki Seok An; Bon Cheol Ku

doi:10.1016/j.apsusc.2018.06.086

Highly transparent and flexible NO ₂ gas sensor film based on MoS ₂ /rGO composites using soft lithographic patterning

Min Wook Jung, Sang Myeoung Kang, Ki Ho Nam, Ki Seok An, Bon Cheol Ku

Department of Textile System Engineering

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

The MoS ₂ /GO hybrid composite thin film is prepared by a facile solution mixing process. To reduce the composite film spin-coated on a SiO ₂ (300 nm)/Si substrate, thermal annealing at 600 °C for 1 h in a N ₂ atmosphere is used. The thermally reduced GO (rGO) composite film is subjected to line patterning through a soft lithographic patterning method, and the patterned MoS ₂ /rGO composite thin film is re-transferred onto a PET film from the Si substrate. The patterned MoS ₂ /rGO composite thin film has a thickness of about 10 nm and the transmittance of the patterned MoS ₂ /rGO composite thin film on the PET substrate is 93%. The NO ₂ gas sensor device is fabricated and its basic characteristics are systematically investigated. The patterned MoS ₂ /rGO composite thin film gas sensor has a sensitivity at least four times higher than the pure rGO thin film gas sensor. In addition, the characteristics of the sensor device are also maintained at a bending radius of 14 mm. This transparent and flexible patterned MoS ₂ /rGO composite thin film can be used as a highly sensitive gas sensor that will detect a concentration as low as 0.15 ppm of harmful gases such as NO ₂ .

Original language	English
Pages (from-to)	7-12
Number of pages	6
Journal	Applied Surface Science
Volume	456
DOIs	https://doi.org/10.1016/j.apsusc.2018.06.086
State	Published - 31 Oct 2018

Keywords

Flexible & transparent device
Gas sensor
MoS /rGO hybrid films

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10.1016/j.apsusc.2018.06.086

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Jung, M. W., Kang, S. M., Nam, K. H., An, K. S., & Ku, B. C. (2018). Highly transparent and flexible NO ₂ gas sensor film based on MoS ₂ /rGO composites using soft lithographic patterning Applied Surface Science, 456, 7-12. https://doi.org/10.1016/j.apsusc.2018.06.086

Jung, Min Wook ; Kang, Sang Myeoung ; Nam, Ki Ho et al. / Highly transparent and flexible NO ₂ gas sensor film based on MoS ₂ /rGO composites using soft lithographic patterning In: Applied Surface Science. 2018 ; Vol. 456. pp. 7-12.

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title = " Highly transparent and flexible NO 2 gas sensor film based on MoS 2 /rGO composites using soft lithographic patterning ",

abstract = " The MoS 2 /GO hybrid composite thin film is prepared by a facile solution mixing process. To reduce the composite film spin-coated on a SiO 2 (300 nm)/Si substrate, thermal annealing at 600 °C for 1 h in a N 2 atmosphere is used. The thermally reduced GO (rGO) composite film is subjected to line patterning through a soft lithographic patterning method, and the patterned MoS 2 /rGO composite thin film is re-transferred onto a PET film from the Si substrate. The patterned MoS 2 /rGO composite thin film has a thickness of about 10 nm and the transmittance of the patterned MoS 2 /rGO composite thin film on the PET substrate is 93%. The NO 2 gas sensor device is fabricated and its basic characteristics are systematically investigated. The patterned MoS 2 /rGO composite thin film gas sensor has a sensitivity at least four times higher than the pure rGO thin film gas sensor. In addition, the characteristics of the sensor device are also maintained at a bending radius of 14 mm. This transparent and flexible patterned MoS 2 /rGO composite thin film can be used as a highly sensitive gas sensor that will detect a concentration as low as 0.15 ppm of harmful gases such as NO 2 .",

keywords = "Flexible & transparent device, Gas sensor, MoS /rGO hybrid films",

author = "Jung, {Min Wook} and Kang, {Sang Myeoung} and Nam, {Ki Ho} and An, {Ki Seok} and Ku, {Bon Cheol}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = oct,

day = "31",

doi = "10.1016/j.apsusc.2018.06.086",

language = "English",

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Jung, MW, Kang, SM, Nam, KH, An, KS & Ku, BC 2018, ' Highly transparent and flexible NO ₂ gas sensor film based on MoS ₂ /rGO composites using soft lithographic patterning ', Applied Surface Science, vol. 456, pp. 7-12. https://doi.org/10.1016/j.apsusc.2018.06.086

Highly transparent and flexible NO ₂ gas sensor film based on MoS ₂ /rGO composites using soft lithographic patterning . / Jung, Min Wook; Kang, Sang Myeoung; Nam, Ki Ho et al.
In: Applied Surface Science, Vol. 456, 31.10.2018, p. 7-12.

Research output: Contribution to journal › Article › peer-review

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T1 - Highly transparent and flexible NO 2 gas sensor film based on MoS 2 /rGO composites using soft lithographic patterning

AU - Jung, Min Wook

AU - Kang, Sang Myeoung

AU - Nam, Ki Ho

AU - An, Ki Seok

AU - Ku, Bon Cheol

PY - 2018/10/31

Y1 - 2018/10/31

N2 - The MoS 2 /GO hybrid composite thin film is prepared by a facile solution mixing process. To reduce the composite film spin-coated on a SiO 2 (300 nm)/Si substrate, thermal annealing at 600 °C for 1 h in a N 2 atmosphere is used. The thermally reduced GO (rGO) composite film is subjected to line patterning through a soft lithographic patterning method, and the patterned MoS 2 /rGO composite thin film is re-transferred onto a PET film from the Si substrate. The patterned MoS 2 /rGO composite thin film has a thickness of about 10 nm and the transmittance of the patterned MoS 2 /rGO composite thin film on the PET substrate is 93%. The NO 2 gas sensor device is fabricated and its basic characteristics are systematically investigated. The patterned MoS 2 /rGO composite thin film gas sensor has a sensitivity at least four times higher than the pure rGO thin film gas sensor. In addition, the characteristics of the sensor device are also maintained at a bending radius of 14 mm. This transparent and flexible patterned MoS 2 /rGO composite thin film can be used as a highly sensitive gas sensor that will detect a concentration as low as 0.15 ppm of harmful gases such as NO 2 .

AB - The MoS 2 /GO hybrid composite thin film is prepared by a facile solution mixing process. To reduce the composite film spin-coated on a SiO 2 (300 nm)/Si substrate, thermal annealing at 600 °C for 1 h in a N 2 atmosphere is used. The thermally reduced GO (rGO) composite film is subjected to line patterning through a soft lithographic patterning method, and the patterned MoS 2 /rGO composite thin film is re-transferred onto a PET film from the Si substrate. The patterned MoS 2 /rGO composite thin film has a thickness of about 10 nm and the transmittance of the patterned MoS 2 /rGO composite thin film on the PET substrate is 93%. The NO 2 gas sensor device is fabricated and its basic characteristics are systematically investigated. The patterned MoS 2 /rGO composite thin film gas sensor has a sensitivity at least four times higher than the pure rGO thin film gas sensor. In addition, the characteristics of the sensor device are also maintained at a bending radius of 14 mm. This transparent and flexible patterned MoS 2 /rGO composite thin film can be used as a highly sensitive gas sensor that will detect a concentration as low as 0.15 ppm of harmful gases such as NO 2 .

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Jung MW, Kang SM, Nam KH, An KS, Ku BC. Highly transparent and flexible NO ₂ gas sensor film based on MoS ₂ /rGO composites using soft lithographic patterning Applied Surface Science. 2018 Oct 31;456:7-12. doi: 10.1016/j.apsusc.2018.06.086

Highly transparent and flexible NO ₂ gas sensor film based on MoS ₂ /rGO composites using soft lithographic patterning

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