Effect of diameter variation in a large set of carbon nanotube transistors.

Tseng, Yu-Chih; Phoa, Kinyip; Carlton, David; Bokor, Jeffrey · Nano Lett · 2006

basic_science · Level V

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Abstract

A study involving a large number of carbon nanotube transistors reveals that the nanotube diameter and the metal contact material play key roles in determining the on- and off-state currents of these devices. The results are discussed in terms of the Schottky barrier at the metal-semiconductor junction and the variation of this barrier relative to the alignment of energy levels between the carbon nanotube and the metal.

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