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High-Current-Density Edge Electron Emission and Electron Beam Shaping for Vacuum Electronics Using Flexible Graphene Paper
- Source :
- IEEE Transactions on Electron Devices. 61:1776-1780
- Publication Year :
- 2014
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2014.
-
Abstract
- We demonstrate edge electron emission from flexible free-standing graphene paper (GP). The turn-on field is measured at 2.2 V/ $\mu{\rm m}$ , and the maximum emission current density at 3 ${\rm A}/{\rm cm}^{2}$ . The field emission properties of GP can be optimized by adjusting the thickness and annealing temperature. Because it is flexible, it can be shaped into different forms to meet the requirements of specific applications. The electron beam shape can range from a sheet electron beam to a cylindrical (hollow) electron beam.
- Subjects :
- Materials science
Annealing (metallurgy)
Graphene
Electron
Temperature measurement
Electronic, Optical and Magnetic Materials
law.invention
Field electron emission
law
Cathode ray
Electrical and Electronic Engineering
Atomic physics
Current density
Computer Science::Databases
Graphene oxide paper
Subjects
Details
- ISSN :
- 15579646 and 00189383
- Volume :
- 61
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Electron Devices
- Accession number :
- edsair.doi...........ba7278e1991ee9134ecf1e48e87d6ee2