The dependence of the Schottky barrier height on carbon nanotube diameter for Pd-carbon nanotube contacts

Johannes Svensson; Abdelrahim A. Sourab; Yury Tarakanov; Dong Su Lee; Seung Joo Park; Seung Jae Baek; Yung Woo Park; Eleanor E.B. Campbell

doi:10.1088/0957-4484/20/17/175204

The dependence of the Schottky barrier height on carbon nanotube diameter for Pd-carbon nanotube contacts

Johannes Svensson, Abdelrahim A. Sourab, Yury Tarakanov, Dong Su Lee, Seung Joo Park, Seung Jae Baek, Yung Woo Park, Eleanor E.B. Campbell

Department of Physics

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

41 Scopus citations

Abstract

Direct measurements are presented of the Schottky barrier (SB) heights of carbon nanotube devices contacted with Pd electrodes. The SB barrier heights were determined from the activation energy of the temperature-dependent thermionic emission current in the off-state of the devices. The barrier heights generally decrease with increasing diameter of the nanotubes and they are in agreement with the values expected when assuming little or no influence of Fermi level pinning.

Original language	English
Article number	175204
Journal	Nanotechnology
Volume	20
Issue number	17
DOIs	https://doi.org/10.1088/0957-4484/20/17/175204
State	Published - 2009

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abstract = "Direct measurements are presented of the Schottky barrier (SB) heights of carbon nanotube devices contacted with Pd electrodes. The SB barrier heights were determined from the activation energy of the temperature-dependent thermionic emission current in the off-state of the devices. The barrier heights generally decrease with increasing diameter of the nanotubes and they are in agreement with the values expected when assuming little or no influence of Fermi level pinning.",

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AU - Svensson, Johannes

AU - Sourab, Abdelrahim A.

AU - Tarakanov, Yury

AU - Lee, Dong Su

AU - Park, Seung Joo

AU - Baek, Seung Jae

AU - Park, Yung Woo

AU - Campbell, Eleanor E.B.

PY - 2009

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N2 - Direct measurements are presented of the Schottky barrier (SB) heights of carbon nanotube devices contacted with Pd electrodes. The SB barrier heights were determined from the activation energy of the temperature-dependent thermionic emission current in the off-state of the devices. The barrier heights generally decrease with increasing diameter of the nanotubes and they are in agreement with the values expected when assuming little or no influence of Fermi level pinning.

AB - Direct measurements are presented of the Schottky barrier (SB) heights of carbon nanotube devices contacted with Pd electrodes. The SB barrier heights were determined from the activation energy of the temperature-dependent thermionic emission current in the off-state of the devices. The barrier heights generally decrease with increasing diameter of the nanotubes and they are in agreement with the values expected when assuming little or no influence of Fermi level pinning.

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The dependence of the Schottky barrier height on carbon nanotube diameter for Pd-carbon nanotube contacts

Abstract

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