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Local variation of metal-semiconducting carbon nanotube contact barrier height
Conference proceeding

Local variation of metal-semiconducting carbon nanotube contact barrier height

B Nabet, E Gallo, M Freitag, A.T Johnson, X Chen and IEEE
Proceedings of the 2nd IEEE Conference on Nanotechnology, v 2002-, pp 435-438
2002

Abstract

Astronomy Atomic force microscopy Atomic measurements Carbon nanotubes Electrostatics Force measurement Nanoscale devices Physics Schottky barriers Voltage
Carbon nanotubes provide great promise for future use as electronic devices. Previously we have used a conducting-tip atomic force microscope to measure the local field effect in a metal-semiconducting C nanotube-metal device. Here we propose a consistent electrostatic model that incorporates the image force, electric field and tip potential and describes how the latter reduces the potential barrier seen by thermionically emitted carriers in the metal-nanotube junction. The model describes a position-dependent barrier change, consistent with experimental data.

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Web of Science research areas
Crystallography
Engineering, Electrical & Electronic
Instruments & Instrumentation
Optics
Physics, Applied
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