Gas sensing properties of SnO2 nanowires on micro-heater

In Sung Hwang, Eui Bok Lee, Sun Jung Kim, Joong Ki Choi, Jung Ho Cha, Ho Jun Lee, Byeong Kwon Ju, Jong Heun Lee

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The SnO2 nanowires (NWs) network gas sensors were fabricated on a micro-electrode and heater suspended in a cavity. The sensors showed selective detection to C2H5OH at a heater power during sensor operation as low as 30-40 mW. The gas response and response speed of the SnO2 NWs sensor to 100 ppm C2H5OH were 4.6- and 4.7-fold greater, respectively, than those of the SnO2 nanoparticles (NPs) sensor with the same electrode geometry. The reasons for these enhanced gas sensing characteristics are discussed in relation to the sensing materials and sensor structures.

Original languageEnglish
Pages (from-to)295-300
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume154
Issue number2
DOIs
Publication statusPublished - 2011 Jun 20

Fingerprint

heaters
Nanowires
nanowires
Gases
sensors
Sensors
gases
Electrodes
Chemical sensors
electrodes
Nanoparticles
Geometry
nanoparticles
cavities
geometry

Keywords

  • C HOH
  • Gas sensors
  • Micro-heater
  • Nanowires (NWs)
  • SnO

ASJC Scopus subject areas

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

Cite this

Hwang, I. S., Lee, E. B., Kim, S. J., Choi, J. K., Cha, J. H., Lee, H. J., ... Lee, J. H. (2011). Gas sensing properties of SnO2 nanowires on micro-heater. Sensors and Actuators, B: Chemical, 154(2), 295-300. https://doi.org/10.1016/j.snb.2009.11.012

Gas sensing properties of SnO2 nanowires on micro-heater. / Hwang, In Sung; Lee, Eui Bok; Kim, Sun Jung; Choi, Joong Ki; Cha, Jung Ho; Lee, Ho Jun; Ju, Byeong Kwon; Lee, Jong Heun.

In: Sensors and Actuators, B: Chemical, Vol. 154, No. 2, 20.06.2011, p. 295-300.

Research output: Contribution to journalArticle

Hwang IS, Lee EB, Kim SJ, Choi JK, Cha JH, Lee HJ et al. Gas sensing properties of SnO2 nanowires on micro-heater. Sensors and Actuators, B: Chemical. 2011 Jun 20;154(2):295-300. https://doi.org/10.1016/j.snb.2009.11.012
Hwang, In Sung ; Lee, Eui Bok ; Kim, Sun Jung ; Choi, Joong Ki ; Cha, Jung Ho ; Lee, Ho Jun ; Ju, Byeong Kwon ; Lee, Jong Heun. / Gas sensing properties of SnO2 nanowires on micro-heater. In: Sensors and Actuators, B: Chemical. 2011 ; Vol. 154, No. 2. pp. 295-300.
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