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Scanning photovoltage microscopy of potential modulations in carbon nanotubes

Publication ,  Journal Article
Freitag, M; Tsang, JC; Bol, A; Avouris, P; Yuan, D; Liu, J
Published in: Applied Physics Letters
August 1, 2007

We use the locally generated photovoltage in carbon nanotubes to image potential modulations produced by defects. The correlation with spatially resolved spectroscopy of the disorder-enhanced Raman band allows us to locate the defects and to determine their effect on band bending. The defects produce local potential maxima, which are consistent with trapped electrons near the tube. An offset photovoltage is generated when the laser populates metastable traps in the oxide. Previously uncharged defects can thus be imaged. To demonstrate the versatility of the technique, we show that tube-tube junction at the base of nanotube loops can be electronically characterized. © 2007 American Institute of Physics.

Duke Scholars

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

August 1, 2007

Volume

91

Issue

3

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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Freitag, M., Tsang, J. C., Bol, A., Avouris, P., Yuan, D., & Liu, J. (2007). Scanning photovoltage microscopy of potential modulations in carbon nanotubes. Applied Physics Letters, 91(3). https://doi.org/10.1063/1.2757100
Freitag, M., J. C. Tsang, A. Bol, P. Avouris, D. Yuan, and J. Liu. “Scanning photovoltage microscopy of potential modulations in carbon nanotubes.” Applied Physics Letters 91, no. 3 (August 1, 2007). https://doi.org/10.1063/1.2757100.
Freitag M, Tsang JC, Bol A, Avouris P, Yuan D, Liu J. Scanning photovoltage microscopy of potential modulations in carbon nanotubes. Applied Physics Letters. 2007 Aug 1;91(3).
Freitag, M., et al. “Scanning photovoltage microscopy of potential modulations in carbon nanotubes.” Applied Physics Letters, vol. 91, no. 3, Aug. 2007. Scopus, doi:10.1063/1.2757100.
Freitag M, Tsang JC, Bol A, Avouris P, Yuan D, Liu J. Scanning photovoltage microscopy of potential modulations in carbon nanotubes. Applied Physics Letters. 2007 Aug 1;91(3).

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

August 1, 2007

Volume

91

Issue

3

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences