Optical and electronic characteristics of single walled carbon nanotubes and silicon nanoclusters by tetrahertz spectroscopy

Hakan Altan, Feng Huang, John F. Federici, Aidong Lan, Haim Grebel

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

We have conducted visible pump-THz (THz - terahertz) probe measurements on single wall carbon nanotubes deposited on quartz substrates. Our results suggest that the photoexcited nanotubes exhibit localized transport due to Lorentz-type photoinduced localized states from 0.2 to 0.7 THz. Upon modeling the THz transmission through the photoexcited layer with an effective dielectric constant given by Maxwell-Garnett theory we found that the data are best fit by a broad Lorentz state at 0.5 THz. These experiments were repeated for ion-implanted, 3-4 nm Si nanoclusters in quartz for which a similar behavior was observed.

Original languageEnglish (US)
Pages (from-to)6685-6689
Number of pages5
JournalJournal of Applied Physics
Volume96
Issue number11
DOIs
StatePublished - Dec 1 2004

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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