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Theoretical investigation on photoconductivity of single intrinsic carbon nanotubes
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10.1063/1.2189827
/content/aip/journal/apl/88/13/10.1063/1.2189827
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/13/10.1063/1.2189827
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The simulated CNT SBFET under infrared light illumination. The electric field is polarized along the CNT channel. The intrinsic channel has a length of . The bottom oxide thickness is .

Image of FIG. 2.
FIG. 2.

(Color online) (a) vs characteristics without light illumination (the solid line) and with three different illumination power densities, (the dashed line), (the dotted line), and (the dash-dotted line). (b) The energy and position resolved current spectrum on a grayscale plot at . A brighter color represents a larger value. The illumination power density is and photon energy . The first conduction and valence subband profiles are also shown. The channel is a (17,0) CNT, which results in a diameter of and a band gap of . is the source (drain) Fermi level.

Image of FIG. 3.
FIG. 3.

(Color online) The source-drain current versus the photon energy for a (22,0) CNT with (the solid line), a (17,0) CNT with (the dashed line), and a (13,0) CNT with (the dash-dotted line) under the illumination intensity of at in the presence of electron-phonon coupling. For comparison, the dotted line with crosses shows the current of the (17,0) CNT without electron-phonon coupling. The vertical bars show the subband gaps.

Image of FIG. 4.
FIG. 4.

(Color online) The LDOS as a function of the energy and channel position on a grayscale plot (a) without electron-phonon coupling and (b) with electron-phonon coupling under the illumination intensity of at . The channel is a (17,0) CNT.

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/content/aip/journal/apl/88/13/10.1063/1.2189827
2006-03-29
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Theoretical investigation on photoconductivity of single intrinsic carbon nanotubes
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/13/10.1063/1.2189827
10.1063/1.2189827
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