Subterahertz electromagnetic wave generation in a randomly networked single-walled carbon nanotubes photoconductive switch

Title
Subterahertz electromagnetic wave generation in a randomly networked single-walled carbon nanotubes photoconductive switch
Authors
신준환박정우한상필풀락송용원김남제류한철고현성박경현
Keywords
terahertz generation; carbon nanotube
Issue Date
2012-12
Publisher
Applied physics letters
Citation
VOL 101, NO 26, 261119-1-261119-4
Abstract
We demonstrated an electromagnetic (EM) wave generation that reaches up to 250 GHz in the photoconductive switch based on randomly networked single-walled carbon nanotubes (SWNTs). Furthermore, we investigated the bias dependence of the electromagnetic wave amplitudes. This subterahertz radiation is generated by the acceleration of photogenerated carriers through fluctuation-induced tunneling in single-walled carbon nanotube bundles. Below the bias field of 20 kV/cm, the signal was enhanced with an increase in the bias field. However, the signal amplitudes decreased above 20 kV/cm due to emerging space-charge accumulation and scattering effect occurring at the defects and contact points.
URI
http://pubs.kist.re.kr/handle/201004/44671
ISSN
00036951
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE