Infrared Spectra of Individual Semiconducting Single-walled Carbon Nanotubes: Testing the Scaling of Transition Energies for Large Diameter Nanotubes

Journal Article · Sat Dec 31 00:00:00 EST 2011 · Physical Review. B, Condensed Matter and Materials Physics

OSTI ID:1042121

Sfeir, M; Misewich, J; Rosenblatt, S; Wu, Y; Voisin, C; Yan, H; Berciaud, S; Heinz, T; Chandra, B

We have measured the low-energy excitonic transitions of chiral assigned individual large-diameter semiconducting single-walled nanotubes using a high-resolution Fourier transform photoconductivity technique. When photoconductivity is complemented by Rayleigh scattering spectroscopy, as many as five optical transitions can be identified on the same individual nanotube over an energy range of 0.3-2.7 eV. We find that well-established energy scaling relations developed for nanotubes of smaller diameter are not consistent with the measured low-energy transitions in large (1.8-2.3 nm) diameter nanotubes.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE SC OFFICE OF SCIENCE (SC)
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1042121
• Report Number(s): BNL-97799-2012-JA; TRN: US201212%%532
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 82, Issue 19
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON
ENERGY RANGE
INFRARED SPECTRA
NANOTUBES
PHOTOCONDUCTIVITY
RAYLEIGH SCATTERING
SPECTROSCOPY
TESTING