Field induced electron emission from graphene nanostructures
Field induced electron emission from graphene nanostructures
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DOI：
10.1088/2632-959x/ac8822
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发表时间：
2022-08
期刊：
影响因子：
3
通讯作者：
Yanlin Gao;Susumu Okada
中科院分区：
文献类型：
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作者：
Yanlin Gao;Susumu Okada
电场在调节纳米材料的电子性质方面起着至关重要的作用。由电场引起的电子发射是一种典型的现象。从石墨烯的电子发射的实验和理论方面进行了简要的回顾。发射发生在石墨烯薄片的边缘，而不是表面，因为边缘高度集中了电场。发射电流对边缘形状和边缘功能化敏感。该综述为利用石墨烯纳米结构设计高效场发射器件提供了指导原则。
Electric fields play a crucial role in modulating the electronic properties of nanoscale materials. Electron emission, induced by an electric field, is a representative phenomenon. Experimental and theoretical aspects of such electron emission from graphene are briefly reviewed. The emission occurs at the edge of graphene flakes, not at the surface, because the edge highly concentrates the electric field. Emission currents are sensitive to the edge shapes and edge functionalization. This review provides guiding principles for designing high-efficiency field-emission devices by using graphene nanostructures.