Ajou University repository

Electronic control of ultrafast field emission in carbon nanotube gaps
Citations

SCOPUS

8

Citation Export

Publication Year
2019-10-14
Journal
Applied Physics Letters
Publisher
American Institute of Physics Inc.
Citation
Applied Physics Letters, Vol.115 No.16
Mesh Keyword
Effective barrier heightsElectronic band structureElectronic controlsEnhancement factorNanoscale morphologyPhoto-electron emissionPhotoinduced electronsSingle-walled nanotube
All Science Classification Codes (ASJC)
Physics and Astronomy (miscellaneous)
Abstract
The electronic control of an ultrafast tunneling electron emission was demonstrated in the nanogap of a single-walled nanotube (SWNT) when irradiated by a femtosecond laser pulse. The SWNT apex possesses a nanoscale morphology with a large damage threshold and thus enabled the achievement of a large emission rate. More importantly, the DC field-emission characteristics varied when the gate bias was changed. This was analyzed in terms of the change in the effective barrier height and enhancement factors. Photoinduced electron emission was observed when the gap area was illuminated with a femtosecond laser centered at a wavelength of 800 nm. As the laser power was increased, a saturated tunneling current was observed, reaching more than 10 electrons per pulse. Finally, the photoelectron emission yield was tuned with the help of gate-induced variations in the electronic band structures of the SWNTs.
ISSN
0003-6951
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/30969
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85073593893&origin=inward
DOI
https://doi.org/10.1063/1.5097724
Journal URL
http://scitation.aip.org/content/aip/journal/apl
Type
Article
Funding
This work was supported by the Midcareer Researcher Program (No. 2017R1A2B4009177) and Small Grant for Exploratory Research Program (No. NRF-2018R1D1A1A02086036) of the Korea National Research Foundation grant funded by Korea Government and by Human Resources Program in Energy Technology (No. 20164030201380) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by Korea Government (MOTIE).
Show full item record

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Ahn, Yeonghwan Image
Ahn, Yeonghwan안영환
Department of Physics
Read More

Total Views & Downloads

File Download

  • There are no files associated with this item.