Controlling the doping of single-walled carbon nanotube networks by proton irradiation

Journal Article · Mon Sep 03 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4751551· OSTI ID:22080425

Walker, D; Mann, C J; Panetta, C J; Alaan, D R; Hopkins, A R; Liu, S H ^[1]

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1. Physical Sciences Laboratories, Aerospace Corporation, P. O. Box 92957 M2/275, Los Angeles, California 90009-2957 (United States)

We demonstrate the controlled desorption of adventitious dopants on networks of single-walled carbon nanotubes (SWNTs) with 100 keV proton irradiation. Networks of sorted metallic, semiconducting SWNTs, and unsorted SWNTs were investigated. The removal of dopants was indicated by an increase in sheet resistances along with an increase in the absorption of the low energy absorption band of semiconducting SWNTs. Semiconducting and unsorted SWNT networks exhibited the largest change in their sheet resistance, which indicates the conductivity of unsorted SWNT networks is dominated by the tube-tube junctions of semiconducting SWNTs.

• OSTI ID: 22080425
• Journal Information: Applied Physics Letters, Vol. 101, Issue 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON NANOTUBES
DESORPTION
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ENERGY ABSORPTION
IRRADIATION
KEV RANGE 100-1000
PROTON BEAMS
SEMICONDUCTOR MATERIALS