Tuning and monitoring the electronic structure of carbon nanotubes

Petit, P.; Mathis, C.; Journet, Catherine; Bernier, P.

doi:10.1016/s0009-2614(99)00399-1

Cited by 160 publications

(158 citation statements)

References 14 publications

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“…7,83 Under saturation doping, 7 bromine and iodine completely deplete the electrons from the valence band responsible for the S 11 transition in the semiconducting nanotubes, and both reagents also affect the S 22 transition ( Figure 5). Similar results were obtained under electrochemical cycling 63 and by controlled doping of thin films of carbon nanotubes. 111,112 Furthermore, solid state doping with halogens has been shown to influence the conductivity and Raman spectra of SWNTs.…”

Section: Ionic Chemistry (Doping)supporting

confidence: 84%

Chemistry of Single-Walled Carbon Nanotubes

et al. 2002

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In this Account we highlight the experimental evidence in favor of our view that carbon nanotubes should be considered as a new macromolecular form of carbon with unique properties and with great potential for practical applications. We show that carbon nanotubes may take on properties that are normally associated with molecular species, such as solubility in organic solvents, solutionbased chemical transformations, chromatography, and spectroscopy. It is already clear that the nascent field of nanotube chemistry will rival that of the fullerenes.

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Section: Ionic Chemistry (Doping)supporting

confidence: 84%

Chemistry of Single-Walled Carbon Nanotubes

et al. 2002

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“…Peak 2 and peak 3 also shift to higher energies, as already reported by Itkis et al 6 The high-frequency changes upon doping have been reported and explained extensively. 27,28 On hole doping, metallic tubes get depleted of charge and therefore a slight decrease in their contribution to the low frequency conductivity is expected. In semiconductors a redistribution of oscillator strength occurs as the highest-lying valence band loses electrons.…”

Section: B Unbaked (Doped) Samplesmentioning

confidence: 99%

Charge dynamics in transparent single-walled carbon nanotube films from optical transmission measurements

et al. 2006

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We report on the transmission over a wide frequency range ͑from the far infrared through the visible͒ of pristine and hole-doped, free-standing carbon nanotube films at temperatures between 50 and 300 K. Optical constants are estimated by Kramers-Kronig analysis of the transmittance. We see evidence in the far infrared for a gap below 10 meV. Hole doping causes a shift of spectral weight from the first interband transition into the far infrared. Temperature dependence in both the doped and undoped samples is restricted to the farinfrared region.

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“…Although much work has gone into understanding transport in heterogeneous systems, such as semiconducting polymers 16 and nanotubes, [17][18][19][20] it has focused on each separately rather than both combined. Nevertheless, we do believe that a simple model of a percolating metallic network with semiconducting links can explain many aspects of our data.…”

mentioning

confidence: 99%

Carbon nanotubes-semiconductor networks for organic electronics: The pickup stick transistor

Lee

Strano

et al. 2005

Applied Physics Letters

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We demonstrate an alternative path for achieving high transconductance organic transistors in spite of relatively large source to drain distances. The improvement of the electronic characteristic of such a scheme is equivalent to a 60-fold increase in mobility of the underlying organic semiconductor. The method is based on percolating networks, which we create from a dispersion of individual single-wall carbon nanotubes and narrow ropes within an organic semiconducting host. The majority of current paths between source and drain follow the metallic nanotubes but require a short, switchable semiconducting link to complete the circuit. With these nanotube-semiconducting composites we achieve effectively a 60× reduction in source to drain distance, which is equivalent to a 60-fold increase of the “effective” mobility of the starting semiconducting material with a minor decrease of the on/off current ratio. These field-induced percolating networks allow for the fabrication of high-transconductance transistors having relatively large source to drain distances that can be manufactured inexpensively by commercially available printing techniques.

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Tuning and monitoring the electronic structure of carbon nanotubes

Cited by 160 publications

References 14 publications

Chemistry of Single-Walled Carbon Nanotubes

Chemistry of Single-Walled Carbon Nanotubes

Charge dynamics in transparent single-walled carbon nanotube films from optical transmission measurements

Carbon nanotubes-semiconductor networks for organic electronics: The pickup stick transistor

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