An indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with PPb-level detection at room-temperature

Yu Ze Chen, Sheng Wen Wang, Chun Chuan Yang, Chieh Han Chung, Yi Chung Wang, Sung Wen Huang Chen, Chia Wei Chen, Teng Yu Su, Heh Nan Lin, Hao Chung Kuo, Yu Lun Chueh

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Utilization of light to boost the performance of gas sensors allows us to operate sensor devices at room temperature. Here, we, for the first time, demonstrated an indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with ppb-level detection operated at room-temperature. Large-area cone-shaped (CS)-MoS2 bilayers were grown by depositing 2 nm-thick MoO3 layers on a 2′′ three-dimensional (3D) cone-patterned sapphire substrate (CPSS) followed by a sulfurization process via chemical vapor deposition. Because the exposed area of MoS2 bilayers is increased by 30%, the CS-MoS2 gas sensor (GS) demonstrated excellent performance with a response of ∼470% and a fast response time of ∼25 s after exposure to 1 ppm of NO gas illuminated by ultraviolet (UV) light with a wavelength of 365 nm. Such extraordinary performance at room temperature is attributed to the enhanced light absorption because of the light scattering effect caused by the 3D configuration and photo-desorption induced by UV illumination. For NO concentrations ranging from 2 ppm down to 0.06 ppm, the CS-MoS2 GS demonstrated a stable sensing behavior with a high response and fast response time (470% and 25 s at 2 ppm NO) because of the light absorption enhanced by the 3D structure and photo-desorption under constant UV illumination. The CS-MoS2 GS exhibits a high sensitivity (∼189.2 R% ppm-1), allowing the detection of NO gas at 0.06 ppm in 130 s. In addition, the 3D cone-shaped structure prolonged the presence of sulfur vapor around MoO3, allowing MoO3 to react with sulfur completely. Furthermore, the CS-MoS2 GS using an indoor lighting to detect NO gas at room temperature was demonstrated for the first time where the CS-MoS2 GS exhibits a stable cycling behavior with a high response (165% at 1 ppm NO) in 50 s; for concentration as low as ∼0.06 ppm, the response of ∼75% in 150 s can be achieved.

Original languageEnglish
Pages (from-to)10410-10419
Number of pages10
JournalNanoscale
Volume11
Issue number21
DOIs
Publication statusPublished - 2019 Jun 7

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Chemical sensors
Cones
Temperature
Lighting
Gases
Sulfur
Light absorption
Desorption
Aluminum Oxide
Sapphire
Light scattering
Chemical vapor deposition
Vapors
Wavelength
Sensors
Substrates

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Chen, Y. Z., Wang, S. W., Yang, C. C., Chung, C. H., Wang, Y. C., Huang Chen, S. W., ... Chueh, Y. L. (2019). An indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with PPb-level detection at room-temperature. Nanoscale, 11(21), 10410-10419. https://doi.org/10.1039/c8nr10157d
Chen, Yu Ze ; Wang, Sheng Wen ; Yang, Chun Chuan ; Chung, Chieh Han ; Wang, Yi Chung ; Huang Chen, Sung Wen ; Chen, Chia Wei ; Su, Teng Yu ; Lin, Heh Nan ; Kuo, Hao Chung ; Chueh, Yu Lun. / An indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with PPb-level detection at room-temperature. In: Nanoscale. 2019 ; Vol. 11, No. 21. pp. 10410-10419.
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title = "An indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with PPb-level detection at room-temperature",
abstract = "Utilization of light to boost the performance of gas sensors allows us to operate sensor devices at room temperature. Here, we, for the first time, demonstrated an indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with ppb-level detection operated at room-temperature. Large-area cone-shaped (CS)-MoS2 bilayers were grown by depositing 2 nm-thick MoO3 layers on a 2′′ three-dimensional (3D) cone-patterned sapphire substrate (CPSS) followed by a sulfurization process via chemical vapor deposition. Because the exposed area of MoS2 bilayers is increased by 30{\%}, the CS-MoS2 gas sensor (GS) demonstrated excellent performance with a response of ∼470{\%} and a fast response time of ∼25 s after exposure to 1 ppm of NO gas illuminated by ultraviolet (UV) light with a wavelength of 365 nm. Such extraordinary performance at room temperature is attributed to the enhanced light absorption because of the light scattering effect caused by the 3D configuration and photo-desorption induced by UV illumination. For NO concentrations ranging from 2 ppm down to 0.06 ppm, the CS-MoS2 GS demonstrated a stable sensing behavior with a high response and fast response time (470{\%} and 25 s at 2 ppm NO) because of the light absorption enhanced by the 3D structure and photo-desorption under constant UV illumination. The CS-MoS2 GS exhibits a high sensitivity (∼189.2 R{\%} ppm-1), allowing the detection of NO gas at 0.06 ppm in 130 s. In addition, the 3D cone-shaped structure prolonged the presence of sulfur vapor around MoO3, allowing MoO3 to react with sulfur completely. Furthermore, the CS-MoS2 GS using an indoor lighting to detect NO gas at room temperature was demonstrated for the first time where the CS-MoS2 GS exhibits a stable cycling behavior with a high response (165{\%} at 1 ppm NO) in 50 s; for concentration as low as ∼0.06 ppm, the response of ∼75{\%} in 150 s can be achieved.",
author = "Chen, {Yu Ze} and Wang, {Sheng Wen} and Yang, {Chun Chuan} and Chung, {Chieh Han} and Wang, {Yi Chung} and {Huang Chen}, {Sung Wen} and Chen, {Chia Wei} and Su, {Teng Yu} and Lin, {Heh Nan} and Kuo, {Hao Chung} and Chueh, {Yu Lun}",
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Chen, YZ, Wang, SW, Yang, CC, Chung, CH, Wang, YC, Huang Chen, SW, Chen, CW, Su, TY, Lin, HN, Kuo, HC & Chueh, YL 2019, 'An indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with PPb-level detection at room-temperature', Nanoscale, vol. 11, no. 21, pp. 10410-10419. https://doi.org/10.1039/c8nr10157d

An indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with PPb-level detection at room-temperature. / Chen, Yu Ze; Wang, Sheng Wen; Yang, Chun Chuan; Chung, Chieh Han; Wang, Yi Chung; Huang Chen, Sung Wen; Chen, Chia Wei; Su, Teng Yu; Lin, Heh Nan; Kuo, Hao Chung; Chueh, Yu Lun.

In: Nanoscale, Vol. 11, No. 21, 07.06.2019, p. 10410-10419.

Research output: Contribution to journalArticle

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T1 - An indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with PPb-level detection at room-temperature

AU - Chen, Yu Ze

AU - Wang, Sheng Wen

AU - Yang, Chun Chuan

AU - Chung, Chieh Han

AU - Wang, Yi Chung

AU - Huang Chen, Sung Wen

AU - Chen, Chia Wei

AU - Su, Teng Yu

AU - Lin, Heh Nan

AU - Kuo, Hao Chung

AU - Chueh, Yu Lun

PY - 2019/6/7

Y1 - 2019/6/7

N2 - Utilization of light to boost the performance of gas sensors allows us to operate sensor devices at room temperature. Here, we, for the first time, demonstrated an indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with ppb-level detection operated at room-temperature. Large-area cone-shaped (CS)-MoS2 bilayers were grown by depositing 2 nm-thick MoO3 layers on a 2′′ three-dimensional (3D) cone-patterned sapphire substrate (CPSS) followed by a sulfurization process via chemical vapor deposition. Because the exposed area of MoS2 bilayers is increased by 30%, the CS-MoS2 gas sensor (GS) demonstrated excellent performance with a response of ∼470% and a fast response time of ∼25 s after exposure to 1 ppm of NO gas illuminated by ultraviolet (UV) light with a wavelength of 365 nm. Such extraordinary performance at room temperature is attributed to the enhanced light absorption because of the light scattering effect caused by the 3D configuration and photo-desorption induced by UV illumination. For NO concentrations ranging from 2 ppm down to 0.06 ppm, the CS-MoS2 GS demonstrated a stable sensing behavior with a high response and fast response time (470% and 25 s at 2 ppm NO) because of the light absorption enhanced by the 3D structure and photo-desorption under constant UV illumination. The CS-MoS2 GS exhibits a high sensitivity (∼189.2 R% ppm-1), allowing the detection of NO gas at 0.06 ppm in 130 s. In addition, the 3D cone-shaped structure prolonged the presence of sulfur vapor around MoO3, allowing MoO3 to react with sulfur completely. Furthermore, the CS-MoS2 GS using an indoor lighting to detect NO gas at room temperature was demonstrated for the first time where the CS-MoS2 GS exhibits a stable cycling behavior with a high response (165% at 1 ppm NO) in 50 s; for concentration as low as ∼0.06 ppm, the response of ∼75% in 150 s can be achieved.

AB - Utilization of light to boost the performance of gas sensors allows us to operate sensor devices at room temperature. Here, we, for the first time, demonstrated an indoor light-activated 3D cone-shaped MoS2 bilayer-based NO gas sensor with ppb-level detection operated at room-temperature. Large-area cone-shaped (CS)-MoS2 bilayers were grown by depositing 2 nm-thick MoO3 layers on a 2′′ three-dimensional (3D) cone-patterned sapphire substrate (CPSS) followed by a sulfurization process via chemical vapor deposition. Because the exposed area of MoS2 bilayers is increased by 30%, the CS-MoS2 gas sensor (GS) demonstrated excellent performance with a response of ∼470% and a fast response time of ∼25 s after exposure to 1 ppm of NO gas illuminated by ultraviolet (UV) light with a wavelength of 365 nm. Such extraordinary performance at room temperature is attributed to the enhanced light absorption because of the light scattering effect caused by the 3D configuration and photo-desorption induced by UV illumination. For NO concentrations ranging from 2 ppm down to 0.06 ppm, the CS-MoS2 GS demonstrated a stable sensing behavior with a high response and fast response time (470% and 25 s at 2 ppm NO) because of the light absorption enhanced by the 3D structure and photo-desorption under constant UV illumination. The CS-MoS2 GS exhibits a high sensitivity (∼189.2 R% ppm-1), allowing the detection of NO gas at 0.06 ppm in 130 s. In addition, the 3D cone-shaped structure prolonged the presence of sulfur vapor around MoO3, allowing MoO3 to react with sulfur completely. Furthermore, the CS-MoS2 GS using an indoor lighting to detect NO gas at room temperature was demonstrated for the first time where the CS-MoS2 GS exhibits a stable cycling behavior with a high response (165% at 1 ppm NO) in 50 s; for concentration as low as ∼0.06 ppm, the response of ∼75% in 150 s can be achieved.

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