A Single Nanobelt Transistor for Gas Identification: Using a Gas-Dielectric Strategy.
A Single Nanobelt Transistor for Gas Identification: Using a Gas-Dielectric Strategy.
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用于气体识别的单纳米带晶体管：使用气体电介质策略
DOI：
10.3390/s16060917
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发表时间：
2016-06-21
期刊：
影响因子：
--
通讯作者：
Liu Y
中科院分区：
文献类型：
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作者：
Cai B;Song Z;Tong Y;Tang Q;Shaymurat T;Liu Y
尽管在高响应低成本气体识别方面有着巨大的潜力和迫切的需求，但基于金属氧化物半导体纳米线/纳米带的气体识别的发展仍然受到制造复杂性和冗余信号的限制。研究人员展示了一种“一钥匙一锁”配置的多传感器阵列策略。在这里，我们描述了一种利用气体作为介质来创建高响应室温气体识别的新策略。这使得仅基于一个原始的单纳米带晶体管就可以将气体识别到十亿分之一（ppb）的水平，并且在线性判别分析（LDA）空间中具有优异的平均马氏距离（MD）高达35。该装置实现了电子鼻的选择性识别功能。通过对气体介质和固体介质器件的对比研究以及对导电通道中陷阱密度变化的研究，讨论了气体介质对多个场效应参数响应的影响。目前的工作为基于原始单一设备的室温气体识别开辟了令人兴奋的机会。
Despite tremendous potential and urgent demand in high-response low-cost gas identification, the development of gas identification based on a metal oxide semiconductor nanowire/nanobelt remains limited by fabrication complexity and redundant signals. Researchers have shown a multisensor-array strategy with “one key to one lock” configuration. Here, we describe a new strategy to create high-response room-temperature gas identification by employing gas as dielectric. This enables gas discrimination down to the part per billion (ppb) level only based on one pristine single nanobelt transistor, with the excellent average Mahalanobis distance (MD) as high as 35 at the linear discriminant analysis (LDA) space. The single device realizes the selective recognition function of electronic nose. The effect of the gas dielectric on the response of the multiple field-effect parameters is discussed by the comparative investigation of gas and solid-dielectric devices and the studies on trap density changes in the conductive channel. The current work opens up exciting opportunities for room-temperature gas recognition based on the pristine single device.