Highly-sensitive H₂ sensor operating at room temperature using Pt/TiO₂ nanoscale Schottky contacts

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• 作者：Hyunah KwonAuthor Vitae ; Yuna LeeAuthor Vitae ; Sunyong HwangAuthor Vitae ; Jong Kyu Kim ; ^{kimjk@postech.ac.kr}Author Vitae
• 关键词：Hydrogen sensor ; Nanoscale Schottky contact ; Room temperature
• 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：985-992
• 全文大小：2112 K
• 卷排序：241

文摘

A metal oxides-based H2 sensor operating at low temperature has been demonstrated. Pt/TiO2 nanoscale Schottky contacts facilitate H2 diffusion and dissociation. Sensing mechanism is contact-dominant at low T, while surface-dominant at high T. Oxygen plays an important role for the recovery process.