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

Abstract

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.

Authors:
; ; ; ; ;  [1]
  1. Physical Sciences Laboratories, Aerospace Corporation, P. O. Box 92957 M2/275, Los Angeles, California 90009-2957 (United States)
Publication Date:
OSTI Identifier:
22080425
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 101; Journal Issue: 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON NANOTUBES; DESORPTION; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; ENERGY ABSORPTION; IRRADIATION; KEV RANGE 100-1000; PROTON BEAMS; SEMICONDUCTOR MATERIALS

Citation Formats

Walker, D, Mann, C J, Panetta, C J, Alaan, D R, Hopkins, A R, and Liu, S H. Controlling the doping of single-walled carbon nanotube networks by proton irradiation. United States: N. p., 2012. Web. doi:10.1063/1.4751551.
Walker, D, Mann, C J, Panetta, C J, Alaan, D R, Hopkins, A R, & Liu, S H. Controlling the doping of single-walled carbon nanotube networks by proton irradiation. United States. doi:10.1063/1.4751551.
Walker, D, Mann, C J, Panetta, C J, Alaan, D R, Hopkins, A R, and Liu, S H. Mon . "Controlling the doping of single-walled carbon nanotube networks by proton irradiation". United States. doi:10.1063/1.4751551.
@article{osti_22080425,
title = {Controlling the doping of single-walled carbon nanotube networks by proton irradiation},
author = {Walker, D and Mann, C J and Panetta, C J and Alaan, D R and Hopkins, A R and Liu, S H},
abstractNote = {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.},
doi = {10.1063/1.4751551},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 10,
volume = 101,
place = {United States},
year = {2012},
month = {9}
}