Large-scale fabrication of highly sensitive SnO 2 nanowire network gas sensors by single step vapor phase growth

In Sung Hwang, Sun Jung Kim, Joong Ki Choi, Jong Jin Jung, Do Joon Yoo, Ki Young Dong, Byeong Kwon Ju, Jong Heun Lee

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

The SnO 2 nanowire networks were grown on a laser-scribed Al 2O 3 substrate containing 16 sensor elements with Au electrodes and Pt heaters via a single step vapor phase reaction, and their gas sensing characteristics were studied. The sensor showed a high response to 5 ppm NO 2 (R g/R a = 1909, R g: resistance in gas, R a: resistance in air) at the sensor temperature of 141°C and high and selective responses to 100 ppm C 2H 5OH (R a/R g = 301.8-326.4) at 240 and 296°C, which demonstrated that high performance SnO 2 nanowire network gas sensors can be fabricated on a large scale through a facile and cost-effective route.

Original languageEnglish
Pages (from-to)97-103
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume165
Issue number1
DOIs
Publication statusPublished - 2012 Apr

Keywords

  • C H OH
  • Gas sensors
  • Large-scale fabrication
  • NO
  • SnO nanowire

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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