Achieving fast oxygen response in individual β-Ga2O3 nanowires by ultraviolet illumination
Achieving fast oxygen response in individual β-Ga2O3 nanowires by ultraviolet illumination
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DOI：
10.1063/1.2349278
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发表时间：
2006-09-11
影响因子：
4
通讯作者：
Wang, T. H.
中科院分区：
文献类型：
--
作者：
Feng, P.;Xue, X. Y.;Wang, T. H.
作者报告了一种实现非常快速的氧反应的途径，并通过使用单个- ga2o3纳米线进行了演示。通过纳米线的电流处于一个较低的水平，并且随着氧气压力的变化而略有变化。相反，在254 nm的紫外线照射下，电流迅速增加到反映纳米线周围氧压力水平的值。照明产生了氧气感应。这种光学驱动的氧传感是快速响应的来源。结果显示了一种有希望实现快速响应气体传感器的方法。(c) 2006年美国物理研究所。
The authors report a route to realize very quick oxygen response and demonstrate it by using individual beta-Ga2O3 nanowires. The current across the nanowire is at a low level and varies slightly with changing the oxygen pressure. In contrast, under 254 nm ultraviolet illumination, the current increases rapidly to a value that reflects the level of the oxygen pressure around the nanowire. The illumination gives rise to the oxygen sensing. This optically driven oxygen sensing is the origin of the fast response. The results demonstrate a promising approach to realize fast-response gas sensors. (c) 2006 American Institute of Physics.