Giant Thermopower Effects from Molecular Physisorption on Carbon Nanotubes

G. U. Sumanasekera, B. K. Pradhan, H. E. Romero, K. W. Adu, P. C. Eklund

Research output: Contribution to journalArticlepeer-review

99 Scopus citations

Abstract

Results are presented of in situ studies of the thermoelectric power and four-probe resistance of single-walled carbon nanotube films during the adsorption of cyclic hydrocarbons [Formula presented] ([Formula presented]). The size of the change in these transport parameters is found to be related to the [Formula presented] electron population of the molecule, suggesting the coupling between these [Formula presented] electrons and those in the nanotube wall may be responsible for the observed effects. A transport model for the SWNT film behavior is presented, incorporating the effects of a new scattering channel associated with the adsorbed molecules.

Original languageEnglish (US)
JournalPhysical review letters
Volume89
Issue number16
DOIs
StatePublished - 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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