H2S sensing in the ppb regime with zinc oxide nanowires
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- 作者：Florian Huber ; florian.huber@uni-ulm.de" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae ; Sö ; ren RiegertAuthor Vitae ; Manfred Madel1Author Vitae ; Klaus ThonkeAuthor Vitae
- 关键词：Zinc oxide ; Nanowires ; Chemical vapour deposition ; Gas sensing ; Hydrogen sulfide
- 刊名：Sensors & Actuators: B. Chemical
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：239
- 期：Complete
- 页码：358-363
- 全文大小：2135 K
文摘
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ZnO nanowires were grown by CVD and deposited on a contact structure.
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The H2S-sensing properties of the NWs were investigated by electrical measurements.
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The role of the flushing gas after the exposure of the sensor to H2S was studied.
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Oxygen is crucial for the sensing mechanism and necessary to reset the sensor.
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A very low detection limit of only 50 ppb H2S was achieved.