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Chi Li, Matthew T. Cole, Wei Lei, Ke Qu, Kai Ying, Yan Zhang, Alex R. Robertson, Jamie H. Warner, Shuyi Ding, Xiaobing Zhang, Baoping Wang and William I. Milne Highly Electron Transparent Graphene for Field Emission Triode Gates Advanced Functional Materials 24

Version of Record online: 20 SEP 2013 | DOI: 10.1002/adfm.201300322

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A nanocarbon field emission triode with a hybrid gate electrode is developed. The graphene/Mo gate shows a high electron transparency (50–68%) which results in a reduced turn-on potential, increased beam collimation, reduced beam diameter (63%), enhanced stability (<1% variation), a 34% increase in perveance, and an amplification 7.6 times that of equivalent conventional refractory metal gate triodes.

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