TITLE

Carrier transport and light-spot movement in carbon-nanotube infrared emitters

AUTHOR(S)
Guo, Jing; Alam, Muhammad A.
PUB. DATE
January 2005
SOURCE
Applied Physics Letters;1/10/2005, Vol. 86 Issue 2, p023105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Infrared emission from a carbon-nanotube (CNT) field-effect transistor, with the position of the light spot controlled by applied bias, was recently reported. In this letter, a self-consistent simulation, which couples a quantum treatment of the metal–CNT contacts to a semiclassical treatment of the channel, is performed to understand carrier transport and light emission in a CNT infrared emitter. The results show that when the channel is long, light emission significantly affects carrier transport, and reduces the source–drain current by a factor of 2 in ambipolar transport regime. The experimentally observed light-spot movement along the channel can be mostly understood and explained by a simple, semiclassical picture.
ACCESSION #
15644147

 

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