Current anisotropy of carbon nanotube diodes:: Voltage and work function dependence

David J. Perello; Seong Chu Lim; Seung Jin Chae; Innam Lee; Moon. J. Kim; Young Hee Lee; Minhee Yun

doi:10.1063/1.3458818

Current anisotropy of carbon nanotube diodes: Voltage and work function dependence

David J. Perello, Seong Chu Lim, Seung Jin Chae, Innam Lee, Moon. J. Kim, Young Hee Lee, Minhee Yun

Condensed Matter Physics Group

Research output: Contribution to journal › Article › peer-review

Abstract

Here, we report a performance analysis on carbon nanotube (CNT) Schottky diodes using source-drain current anisotropy. An analytical model is derived based on thermionic field emission and used to correlate experimental data from Pd–Hf, Ti–Hf, Cr–Hf, Ti–Cr, and Pd–Au mixed metal devices fabricated on one single 6 mm long CNT. Results suggest that the difference in work functions of the two contact-metals, and not a dominant Schottky contact, determines diode performance. Results are further applied and demonstrated in a reversible polarity diode.

Original language	English
Journal	Applied Physics Letters
Volume	96
Issue number	26
DOIs	https://doi.org/10.1063/1.3458818
Publication status	Published - 28 Jun 2010

Keywords

carbon nanotubes
chromium
gold
hafnium
nanotube devices
palladium
Schottky barriers
Schottky diodes
titanium
work function

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10.1063/1.3458818

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title = "Current anisotropy of carbon nanotube diodes:: Voltage and work function dependence",

abstract = "Here, we report a performance analysis on carbon nanotube (CNT) Schottky diodes using source-drain current anisotropy. An analytical model is derived based on thermionic field emission and used to correlate experimental data from Pd–Hf, Ti–Hf, Cr–Hf, Ti–Cr, and Pd–Au mixed metal devices fabricated on one single 6 mm long CNT. Results suggest that the difference in work functions of the two contact-metals, and not a dominant Schottky contact, determines diode performance. Results are further applied and demonstrated in a reversible polarity diode.",

keywords = "carbon nanotubes, chromium, gold, hafnium, nanotube devices, palladium, Schottky barriers, Schottky diodes, titanium, work function",

author = "Perello, {David J.} and Lim, {Seong Chu} and Chae, {Seung Jin} and Innam Lee and Kim, {Moon. J.} and Lee, {Young Hee} and Minhee Yun",

year = "2010",

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volume = "96",

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T1 - Current anisotropy of carbon nanotube diodes:

T2 - Voltage and work function dependence

AU - Perello, David J.

AU - Lim, Seong Chu

AU - Chae, Seung Jin

AU - Lee, Innam

AU - Kim, Moon. J.

AU - Lee, Young Hee

AU - Yun, Minhee

PY - 2010/6/28

Y1 - 2010/6/28

N2 - Here, we report a performance analysis on carbon nanotube (CNT) Schottky diodes using source-drain current anisotropy. An analytical model is derived based on thermionic field emission and used to correlate experimental data from Pd–Hf, Ti–Hf, Cr–Hf, Ti–Cr, and Pd–Au mixed metal devices fabricated on one single 6 mm long CNT. Results suggest that the difference in work functions of the two contact-metals, and not a dominant Schottky contact, determines diode performance. Results are further applied and demonstrated in a reversible polarity diode.

AB - Here, we report a performance analysis on carbon nanotube (CNT) Schottky diodes using source-drain current anisotropy. An analytical model is derived based on thermionic field emission and used to correlate experimental data from Pd–Hf, Ti–Hf, Cr–Hf, Ti–Cr, and Pd–Au mixed metal devices fabricated on one single 6 mm long CNT. Results suggest that the difference in work functions of the two contact-metals, and not a dominant Schottky contact, determines diode performance. Results are further applied and demonstrated in a reversible polarity diode.

KW - carbon nanotubes

KW - chromium

KW - gold

KW - hafnium

KW - nanotube devices

KW - palladium

KW - Schottky barriers

KW - Schottky diodes

KW - titanium

KW - work function

U2 - 10.1063/1.3458818

DO - 10.1063/1.3458818

M3 - Article

SN - 0003-6951

VL - 96

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 26

ER -

Current anisotropy of carbon nanotube diodes: Voltage and work function dependence

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Keywords

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