Abstract
Polycrystalline Dy-doped SrTiO3 thin films deposited by pulsed laser deposition (PLD) on CeO2-buffered yttria-stabilized zirconia (YSZ) single crystal substrates showed oxygen sensing characteristics at room temperature. The oxygen gas sensing characteristics depended on the amount of Dy-doping, and 1.5 mol% Dy-doping was most effective. The oxygen gas sensing characteristics were closely related to leakage current characteristics of Dy-doped SrTiO3 thin film deposited on ZnIn2O 2/YSZ/Si(001) substrates. The suppression of leakage current by Dy-doping suggests that Ti4+ is substituted by Dy3+, and the Dy3+ acts as an acceptor. Further doping of Dy3+ brought about the increase of the leakage current, and it lowered the oxygen gas sensitivity.
Original language | English |
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Pages (from-to) | 1004-1008 |
Number of pages | 5 |
Journal | Journal of the Ceramic Society of Japan |
Volume | 117 |
Issue number | 1369 |
DOIs | |
Publication status | Published - 2009 Sep |
Keywords
- Dy-doping
- Leakage current
- Oxygen sensor
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry