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

Keywords

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

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

Fingerprint Dive into the research topics of 'Gas sensing properties of SnO<sub>2</sub> nanowires on micro-heater'. Together they form a unique fingerprint.

  • Cite this