UV light activation of TiO2-doped SnO2 thick film for sensing ethanol at room temperature

Wen Zeng, Tianmo Liu, Zhongchang Wang

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

TiO2doped SnO2 nanopowder is synthesized via a sol-gel method and characterized by atomic force microscopy and X-ray diffraction. Using this nanopowder, we have fabricated a novel semiconductor gas sensor that is sensitive to UV light illumination. We find that gas-sensing properties of TiO2 -doped SnO2 sensor can be enhanced significantly under the exposure of UV light. The sensor exhibits a high sensitivity of 25 and rapid response-recovery times of 8 s and 24 s, respectively, under an ethanol gas of up to 100ppm at room temperature (323K). This suggests the possibility of development of a gas sensor tor detecting ethanol at room temperature.

Original languageEnglish
Pages (from-to)243-245
Number of pages3
JournalMaterials Transactions
Volume51
Issue number2
DOIs
Publication statusPublished - 2010 Feb
Externally publishedYes

Keywords

  • Ethanol
  • Room temperature
  • Sensitivity
  • SnO-TiO
  • Ultraviolet light

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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