期刊
NANOMATERIALS
卷 11, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/nano11082150
关键词
ZnO nanowire; field emission; large area vacuum microelectronic application
类别
资金
- National Key Research and Development Program of China [2016YFA0202000]
- National Natural Science Foundation of China [61701551, 91833303]
- Science and Technology Department of Guangdong Province [2020B0101020002]
- Fundamental Research Funds for the Central Universities
ZnO nanowire is considered one of the most promising candidates for cold cathode materials, especially for large area field emitter arrays. Many studies have reported on the fundamental field emission properties of ZnO nanowire and its applications in large area vacuum microelectronics. Additionally, various optimization techniques such as modifying geometrical structure, surface decoration, and element doping have been proposed.
A cold cathode has many applications in high frequency and high power electronic devices, X-ray source, vacuum microelectronic devices and vacuum nanoelectronic devices. After decades of exploration on the cold cathode materials, ZnO nanowire has been regarded as one of the most promising candidates, in particular for large area field emitter arrays (FEAs). Numerous works on the fundamental field emission properties of ZnO nanowire, as well as demonstrations of varieties of large area vacuum microelectronic applications, have been reported. Moreover, techniques such as modifying the geometrical structure, surface decoration and element doping were also proposed for optimizing the field emissions. This paper aims to provide a comprehensive review on recent progress on the ZnO nanowire cold cathode and its applications. We will begin with a brief introduction on the synthesis methods and discuss their advantages/disadvantages for cold cathode applications. After that, the field emission properties, mechanism and optimization will be introduced in detail. Then, the development for applications of large-area ZnO nanowire FEAs will also be covered. Finally, some future perspectives are provided.
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