Unusually large Franz-Keldysh oscillations at ultraviolet wavelengths in single-walled carbon nanotubes

Moon Ho Ham, Byung Seon Kong, Woo Jae Kim, Hee Tae Jung, Michael S. Strano

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We report large electroabsorption susceptibilities in the ultraviolet region for single-walled carbon nanotubes (SWNT) supported on quartz that are approximately 103 larger than the highest values reported to date for any system. The oscillatory behavior is described using a convolution of Airy functions in photon energy ascribing the effect to Franz-Keldysh oscillations. The metallic and semiconducting SWNT composition is varied, and it is shown that the confinement energy correlates with the average band gap for semiconducting SWNT in the film. The large susceptibilities arise from a subpercolated network of metallic SWNT that enhances the local electric field.

Original languageEnglish
Article number047402
JournalPhysical Review Letters
Volume102
Issue number4
DOIs
StatePublished - 26 Jan 2009

Fingerprint

Dive into the research topics of 'Unusually large Franz-Keldysh oscillations at ultraviolet wavelengths in single-walled carbon nanotubes'. Together they form a unique fingerprint.

Cite this