Enhanced photocurrent generation from UV-laser-synthesized-single-wall- carbon-nanotubes/n-silicon hybrid planar devices

V. Le Borgne, P. Castrucci, Silvano Del Gobbo, M. Scarselli, M. De Crescenzi, M. Mohamedi, M. A. El Khakani

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We report on the significant generation of photocurrent (PC) from planar devices built from the drop casting of UV-laser-synthesized single-wall-carbon- nanotubes (SWCNTs) onto n-Si substrate. These SWCNTs/n-Si hybrid devices are shown to generate PC with external quantum efficiencies (EQE) reaching up to ∼10%. Their EQE has been optimized by controlling the amount of deposited SWCNTs, and is shown to be significantly enhanced over all the spectral range with a pronounced boost (up to ∼25× times) around 460 nm. The extension of the photoresponse of these devices toward UV correlates well with the absorbance of SWCNTs.

Original languageEnglish (US)
Article number193105
JournalApplied Physics Letters
Volume97
Issue number19
DOIs
StatePublished - Nov 8 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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