ZnO纳米线的化学传感

IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI:10.1109/ICSENS.2005.1597829

Z. Fan, J.G. Lu

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引用次数: 6

摘要

将氧化锌纳米线配置为n沟道场效应晶体管。这些晶体管被用作检测各种气体的化学传感器。当温度从300 ~ 500 K升高时，观察到纳米线的氨传感行为由氧化向还原转变。这种效应归因于温度相关的化学势位移。在氧气存在的情况下，一氧化碳可以增加纳米线的电导率。此外，还研究了纳米线检测灵敏度随直径的变化规律

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Chemical sensing with ZnO nanowires

Zinc oxide nanowires were configured as n-channel field-effect transistors. These transistors were implemented as chemical sensors for detection of various gases. The ammonia sensing behavior of nanowires was observed to switch from oxidizing to reducing when temperature increased from 300 to 500 K. This effect is attributed to the temperature dependent chemical potential shift. Carbon monoxide was found to increase the nanowire conductance in the presence of oxygen. In addition, nanowire detection sensitivity dependence on the diameter was investigated

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IEEE Sensors, 2005.

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