Electrical characterization of room temperature humidity sensors in La_0.8Sr_0.2Fe_{1鈭?span style='font-style: italic'>x}Cu_xO₃ (x = 0, 0.05, 0.10)

详细信息	查看全文 | 推荐本文 |

• 作者：A. Cavalieri^a ; T. Caronna^b ; I. Natali Sora^b ; J.M. Tulliani^a ; ^{jeanmarc.tulliani@polito.it}
• 关键词：A. Films ; C. Electrical properties ; D. Ferrites ; E. Sensors ; Copper doping
• 刊名：Ceramics International
• 出版年：2012
• 期刊代码：13_02728842
• 类别：ms
• 出版时间：May, 2012
• 卷：38
• 期：4
• 页码：2865-2872
• 文件大小：1381 K

摘要

Semiconducting oxide gas sensors based on La_0.8Sr_0.2Fe_1鈭?em>xCu_xO₃ (x = 0, 0.05, 0.10) (LSF, LSFC05, and LSFC10, respectively) were prepared by screen-printing for humidity detection at room temperature.

The thick-films were heat-treated at 800, 900 and 1000 掳C for 1 h and all the compositions proved to be effective in humidity sensing and presented a good reproducibility between several measurements. However, the best results were obtained with LSFC10 fired at 800 掳C which showed a detection limit of 15%relative humidity and a maximum sensor response of about 87%, higher than the previous results. Copper addition to lanthanum strontium ferrites proved to be effective in lowering the sensors鈥?detection limit.