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Chemical doping of individual semiconducting carbon-nanotube ropes

Bockrath, Marc and Hone, J. and Zettl, A. and McEuen, Paul L. and Rinzler, Andrew G. and Smalley, Richard E. (2000) Chemical doping of individual semiconducting carbon-nanotube ropes. Physical Review B, 61 (16). R10606-R10608. ISSN 1098-0121. doi:10.1103/PhysRevB.61.R10606.

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We report the effects of potassium doping on the conductance of individual semiconducting single-walled carbon nanotube ropes. We are able to control the level of doping by reversibly intercalating and de-intercalating potassium. Potassium doping changes the carriers in the ropes from holes to electrons. Typical values for the carrier density are found to be ∼100–1000 electrons/μm. The effective mobility for the electrons is μeff∼20–60 cm2 V-1 s-1, a value similar to that reported for the hole effective mobility in nanotubes [R. Martel et al., Appl. Phys. Lett. 73, 2447 (1998)].

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Hone, J.0000-0002-8084-3301
Additional Information:© 2000 The American Physical Society. Received 1 November 1999. We would like to thank Steven G. Louie and Marvin Cohen for helpful discussions, and G.Y. McLean for experimental assistance. This work was supported by D.O.E. (Basic Energy Sciences, Materials Sciences Division, the sp2 Materials Initiative). Nanotube production at Rice University was supported by the Office of Naval Research, the Robert A. Welch Foundation, and the Texas Advanced Technology Program.
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Department of Energy (DOE)UNSPECIFIED
Office of Naval Research (ONR)UNSPECIFIED
Robert A. Welch FoundationUNSPECIFIED
Texas Advanced Technology ProgramUNSPECIFIED
Issue or Number:16
Record Number:CaltechAUTHORS:BOCprb00
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4653
Deposited By: Tony Diaz
Deposited On:01 Sep 2006
Last Modified:08 Nov 2021 20:19

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