Hydrogen gas sensors based on semiconductor oxide nanostructures.

Hydrogen gas sensors based on semiconductor oxide nanostructures.
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基于半导体氧化物纳米结构的氢气传感器

DOI:
10.3390/s120505517
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发表时间:
2012
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Hu Y
Hu Y
中科院分区:
其他
文献类型:
--
作者:
Gu H;Wang Z;Hu Y

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近年来,半导体氧化物(SMO)纳米结构的氢气感测性能得到了广泛的研究。本文对近五年来基于SMO薄膜和一维纳米结构的氢气传感器的研究进展进行了综述。讨论了SMO纳米结构的氢传感机理及若干关键问题。掺杂、贵金属修饰、异质结和尺寸减小是提高SMO薄膜和一维纳米结构传感性能的有效方法。研究了SMO薄膜和一维纳米结构的晶界和取向对氢响应的影响,以及传感器结构,包括电极尺寸和纳米结。最后,讨论了SMO纳米结构氢传感器未来应用面临的挑战。
Recently, the hydrogen gas sensing properties of semiconductor oxide (SMO) nanostructures have been widely investigated. In this article, we provide a comprehensive review of the research progress in the last five years concerning hydrogen gas sensors based on SMO thin film and one-dimensional (1D) nanostructures. The hydrogen sensing mechanism of SMO nanostructures and some critical issues are discussed. Doping, noble metal-decoration, heterojunctions and size reduction have been investigated and proved to be effective methods for improving the sensing performance of SMO thin films and 1D nanostructures. The effect on the hydrogen response of SMO thin films and 1D nanostructures of grain boundary and crystal orientation, as well as the sensor architecture, including electrode size and nanojunctions have also been studied. Finally, we also discuss some challenges for the future applications of SMO nanostructured hydrogen sensors.
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