Preparation of Macroporous Eu-Doped Oxide Thick Films and Their Application to Gas Sensor Materials

• Takakura Yukari

  Graduate School of Science and Technology

• Hyodo Takeo

  Faculty of Engineering Nagasaki University

• Shimizu Yasuhiro

  Faculty of Engineering Nagasaki University

• Egashira Makoto

  Faculty of Engineering Nagasaki University

Abstract

Macroporous (mp-)SnO₂ thick films doped with 5 mol% Eu and 0∼10 mol% Mg (Lmp-SnO₂(mMg):Eu, L: the size of PMMA microsphere used: 400 or 800 (nm), m: Mg content) were fabricated by a modified sol-gel method that employs PMMA microspheres as a template and constituent metal chlorides as an oxide source. The photoluminescence (PL) intensity due to Eu³⁺ ions increased with increasing the Mg content in the thick films. These films were subjected to the PL response measurement to acetone, and their PL intensities decreased clearly upon exposure to acetone balanced with air. Among all the films tested, Lmp-SnO₂(1Mg):Eu showed the highest ratio (I₀/I) of PL intensity in air (I₀) to that (I) in acetone, irrespective of the size of macropores, while the signal/noise (S/N) ratio was low. On the other hand, ΔI (= I₀ - I) of Lmp-SnO₂(mMg):Eu was the highest at m = 10 with a high S/N ratio.

Journal

• IEEJ Transactions on Sensors and Micromachines

  IEEJ Transactions on Sensors and Micromachines 128 (4), 137-140, 2008

  The Institute of Electrical Engineers of Japan

Keywords

• gas sensor
• photoluminescence
• macropore
• SnO₂
• Eu

Details

• CRID: 1390001204460896000
• NII Article ID: 10021135122
• NII Book ID: AN1052634X
• DOI: 10.1541/ieejsmas.128.137
• ISSN: 13475525
• ISSN: 13418939
• NDL BIB ID: 9452161
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9452161
• Web Site: http://www.jstage.jst.go.jp/article/ieejsmas/128/4/128_4_137/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed