Development of an ozone gas sensor using single-walled carbon nanotubes

Youngmin Park, Ki Young Dong, Jinwoo Lee, Jinnil Choi, Gwi Nam Bae, Byeong Kwon Ju

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


This study deals with the fabrication of an ozone gas sensor using single-walled carbon nanotubes (SWCNTs) as sensing material. The SWCNTs are dispersed by N,N-dimethylformamide (DMF). The CNT-DMF solution was dropped between interdigitated electrodes' fingers to fabricate ozone gas sensor. For ozone environment, a commercial ozone generator was introduced. To improve sensor response, the deposited carbon nanotubes network was thermally treated at high temperature in a furnace. The sensor exhibits high sensitivity to ozone gas at concentration as low as 50 ppb, and fast response time, which is promising for future commercialization of carbon nanotubes based ozone gas sensor.

Original languageEnglish
Pages (from-to)407-411
Number of pages5
JournalSensors and Actuators, B: Chemical
Issue number2
Publication statusPublished - 2009 Jul 16

Bibliographical note

Funding Information:
This work was supported by the IT R&D program of MKE/IITA [2006-S-078-03, Environmental Sensing and Alerting System with Nano-wire and Nano-tube] and partially supported by the National Research Laboratory NRL (R0A-2007-000-20111-0) Program of the Ministry of Science and Technology in Korea Science. We thank the government for financial support.

Copyright 2009 Elsevier B.V., All rights reserved.


  • Gas sensor
  • N,N-dimethylformamide (DMF)
  • O gas
  • Single-walled carbon nanotubes
  • Thermal treatment

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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