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Liquid phase exfoliated WS nanosheet-based gas sensor for room temperature NO detection

Journal of Materials Science: Materials in Electronics, ISSN: 1573-482X, Vol: 33, Issue: 12, Page: 9235-9245
2022
  • 33
    Citations
  • 0
    Usage
  • 43
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    33
    • Citation Indexes
      33
  • Captures
    43

Article Description

Layered transition metal dichalcogenide (TMD) materials possess novel and unique semiconducting properties when exfoliated into thin sheets or individual layers. The exfoliation leads to effective sensing towards gas molecule due to the increase in surface-active sites and edge zone disorders. In this work, we present exfoliation of bulk WS sheets with liquid-based dispersion technique using facile bath sonication method for NO molecule sensing. The exfoliated WS nanosheets show reversible and selective response towards NO gas molecules operating at room temperature. The sensitive film shows p-type characteristics providing sensor response rate around 27% for 10 ppm NO with rapid response and recovery time around 45 s and 60 s, respectively. The sensitive response was further studied at high temperature of 150 °C showing a drastic increase in response rate as 45% with effective response and recovery time. This improvement in NO gas sensing was attributed to the facile exfoliation of WS nanosheets.

Bibliographic Details

D. Simon Patrick; P. Bharathi; M. Krishna Mohan; C. Muthamizchelvan; S. Harish; M. Navaneethan

Springer Science and Business Media LLC

Materials Science; Physics and Astronomy; Engineering

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