Photoresponse from noble metal nanoparticles-multi walled carbon nanotube composites

M. Scarselli, Luca Camilli, O. Pulci, P. Castrucci, E. Gatto, E. Venanzi, M. De Crescenzi

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In this Letter, we investigated the photo-response of multi wall carbon nanotube-based composites obtained from in situ thermal evaporation of noble metals (Au, Ag, and Cu) on the nanotube films. The metal deposition process produced discrete nanoparticles on the nanotube outer walls. The nanoparticle-carbon nanotube films were characterized by photo-electrochemical measurements in a standard three electrode cell. The photocurrent from the decorated carbon nanotubes remarkably increased with respect to that of bare multiwall tubes. With the aid of first-principle calculations, these results are discussed in terms of metal nanoparticle–nanotube interactions and electronic charge transfer at the interface.
Original languageEnglish
JournalApplied Physics Letters
Volume101
Issue number24
Number of pages5
ISSN0003-6951
DOIs
Publication statusPublished - 12 Dec 2012
Externally publishedYes

Keywords

  • Carbon nanotubes
  • Gold
  • Copper
  • Silver
  • Electrodes

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