Conduction mechanisms in SnO₂ single-nanowire gas sensors: An impedance spectroscopy study

详细信息    查看全文

• 作者：F. Schipani^a ; ^bAuthor Vitae ; D.R. Miller^a ; ^cAuthor Vitae ; M.A. Ponce^bAuthor Vitae ; C.M. Aldao^bAuthor Vitae ; S.A. Akbar^a ; ^{akbar.1@osu.edu}Author Vitae ; P.A. Morris^aAuthor Vitae ; J.C. Xu^cAuthor Vitae
• 关键词：Impedance spectroscopy ; SnO2 ; Single nanowire ; Multiple nanowire ; Equivalent circuit
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：31 March 2017
• 年：2017
• 卷：241
• 期：Complete
• 页码：99-108
• 全文大小：2028 K
• 卷排序：241

文摘

Single and multiple SnO2 NWs gas sensors were studied with impedance spectroscopy. The resistance from the Pt-NW contact changes with atmosphere and temperature. For the multiple-NW sensors, the resistance mainly came from the NW–NW junction. Equivalent circuit modeling was used to draw conclusions about the conduction mechanisms.