Semiconductor gas sensor using SrO-modified SnO2 for the detection of N2O in air

Eiichi Kanazawa, Go Sakai, Kengo Shimanoe, Yuichi Kanmura, Yasutake Teraoka, Norio Miura, Noboru Yamazoe

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A semiconductor-type sensor applicable to the monitoring of N2O in air was studied. As revealed by a screening test, n-type oxides such as SnO2, In2O3, WO3, and ZnO were more or less sensitive to N2O, while the highest sensitivity was obtained with SnO2. However, the N2O sensitivity of SnO2 was not sufficient for practical application. The addition of SrO to SnO2 was effective for improving N2O sensitivity. Thus 0.5 wt % SrO-SnO2 was about three times as sensitive as pure SnO2, allowing good detection of 10-300 ppm N2O in air at 500 °C.

Original languageEnglish
Pages (from-to)572-574
Number of pages3
JournalElectrochemical and Solid-State Letters
Issue number12
Publication statusPublished - Dec 2000

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • General Materials Science
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering


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