✦ LIBER ✦

Fullerene-functionalized carbon nanotubes as improved optical limiting devices

✍ Scribed by Nicolas Mackiewicz; Thomas Bark; Bertrand Cao; Jacques A. Delaire; Didier Riehl; Wai Li Ling; Stéphanie Foillard; Eric Doris

Publisher: Elsevier Science
Year: 2011
Tongue: English
Weight: 571 KB
Volume: 49
Category: Article
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2011.05.040

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✦ Synopsis

We report the synthesis, characterization and optical limiting behavior of a nanohybrid built by grafting C 60 -fullerenes on carbon nanotubes (CNTs). The nonlinear optical limiting properties of the CNT-C 60 complex were investigated at wavelengths where C 60 does not absorb. We found that the nanohybrid had superior performances to those of CNTs and fullerenes, either taken individually or as a mixture. This enhanced optical limitation of the nanohybrid suggests not only cooperative but also synergistic effects between the two carbon forms. A mechanism involving higher excitonic states of the CNTs formed by Auger recombination of low energy excitons is proposed.

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