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Sensors 2017, 17(4), 683; doi:10.3390/s17040683

Electrodes for Semiconductor Gas Sensors

Department of Electronic Engineering, Kyungnam University, 7 Kyungnamdaehak-ro, Masanhappo-gu, Changwon 51767, Korea
Academic Editor: Giovanni Neri
Received: 7 February 2017 / Revised: 11 March 2017 / Accepted: 22 March 2017 / Published: 25 March 2017
(This article belongs to the Collection Gas Sensors)
View Full-Text   |   Download PDF [2663 KB, uploaded 26 March 2017]   |  

Abstract

The electrodes of semiconductor gas sensors are important in characterizing sensors based on their sensitivity, selectivity, reversibility, response time, and long-term stability. The types and materials of electrodes used for semiconductor gas sensors are analyzed. In addition, the effect of interfacial zones and surface states of electrode–semiconductor interfaces on their characteristics is studied. This study describes that the gas interaction mechanism of the electrode–semiconductor interfaces should take into account the interfacial zone, surface states, image force, and tunneling effect. View Full-Text
Keywords: electrodes; semiconductor gas sensors; electrode materials; interfacial layer; transport mechanism electrodes; semiconductor gas sensors; electrode materials; interfacial layer; transport mechanism
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lee, S.P. Electrodes for Semiconductor Gas Sensors. Sensors 2017, 17, 683.

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