期刊
PHYSICAL REVIEW B
卷 61, 期 16, 页码 10606-10608出版社
AMER PHYSICAL SOC
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 similar to 100-1000 electrons/mu m. The effective mobility for the electrons is mu(eff)similar to 20-60 cm(2) 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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