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Thermionic electron emission in the 1D edge-to-edge limit
Zhang, Tongyao1,2; Wang, Hanwen3; Xia, Xiuxin3; Qin, Chengbing2,4; Li, Xiaoxi1,2
Corresponding AuthorLi, Xiaoxi(xiaoxili1987@gmail.com)
2022-04-01
Source PublicationCHINESE PHYSICS B
ISSN1674-1056
Volume31Issue:5Pages:5
AbstractThermionic emission is a tunneling phenomenon, which depicts that electrons on the surface of a conductor can be pulled out into the vacuum when they are subjected to high electrical tensions while being heated hot enough to overtake their work functions. This principle has led to the great success of the so-called vacuum tubes in the early 20th century. To date, major challenges still remain in the miniaturization of a vacuum channel transistor for on-chip integration in modern solid-state integrated circuits. Here, by introducing nano-sized vacuum gaps (similar to 200 nm) in a van der Waals heterostructure, we successfully fabricated a one-dimensional (1D) edge-to-edge thermionic emission vacuum tube using graphene as the filament. With the increasing collector voltage, the emitted current exhibits a typical rectifying behavior, with the maximum emission current reaching 200 pA and an ON-OFF ratio of 10(3). In addition, it is found that the maximum emission current is proportional to the number of the layers of graphene. Our results expand the research of nano-sized vacuum tubes to an unexplored physical limit of 1D edge-to-edge emission, and hold great promise for future nano-electronic systems based on it.
Keywordvacuum microelectronics thermionic emission graphene electronic transport in nanoscale materials and structures
Funding OrganizationNational Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Joint Research Fund of Liaoning-Shenyang National Laboratory for Materials Science ; IMR Innovation Fund
DOI10.1088/1674-1056/ac464d
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[12004389] ; National Natural Science Foundation of China[12004288] ; National Natural Science Foundation of China[12104462] ; China Postdoctoral Science Foundation[2020M68036] ; China Postdoctoral Science Foundation[2021T140430] ; Joint Research Fund of Liaoning-Shenyang National Laboratory for Materials Science[2019JH3/30100031] ; IMR Innovation Fund[2021-PY17]
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000782501100001
PublisherIOP Publishing Ltd
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172967
Collection中国科学院金属研究所
Corresponding AuthorLi, Xiaoxi
Affiliation1.Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
2.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
4.Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Tongyao,Wang, Hanwen,Xia, Xiuxin,et al. Thermionic electron emission in the 1D edge-to-edge limit[J]. CHINESE PHYSICS B,2022,31(5):5.
APA Zhang, Tongyao,Wang, Hanwen,Xia, Xiuxin,Qin, Chengbing,&Li, Xiaoxi.(2022).Thermionic electron emission in the 1D edge-to-edge limit.CHINESE PHYSICS B,31(5),5.
MLA Zhang, Tongyao,et al."Thermionic electron emission in the 1D edge-to-edge limit".CHINESE PHYSICS B 31.5(2022):5.
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