Similarities in the Raman RBM and D bands in double-wall carbon nanotubes

Pascal Puech; Ayman Bassil; J. Gonzalez; Ch. Power; Emmanuel Flahaut; Sophie Barrau; Philippe Demont; Colette Lacabanne; Emile Perez; Wolfgang Bacsa

doi:10.1103/physrevb.72.155436

Article dans une revue

Similarities in the Raman RBM and D bands in double-wall carbon nanotubes

Pascal Puech ¹ Ayman Bassil ¹ J. Gonzalez Ch. Power Emmanuel Flahaut ² Sophie Barrau ² Philippe Demont ² Colette Lacabanne ² Emile Perez ³ Wolfgang Bacsa ¹

1 Laboratoire Physique des Solides de Toulouse

2 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

3 IMRCP - Interactions moléculaires et réactivité chimique et photochimique

Abstract : We examine the Raman spectrum of double wall carbon nanotubes with a broad size distribution in agglomerated form and partially filled with Pb I 2 . Using spectroscopic mapping we find a statistical correlation between the radial breathing mode (RBM) and D band intensity. All the investigated samples show the same correlation using the 514 nm laser excitation. We derive the phonon deformation potential for the D band and extend the dispersion of the D band to the UV. We find that the intensity of the D band decreases with increasing pressure and vanishes at a pressure comparable to what has been observed earlier for the RBM and D ∗ band.

Keywords : Vibrational modes Lead iodides Raman spectra Fillers Carbon nanotubes

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Article dans une revue

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Chimie / Matériaux

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https://hal.univ-lille.fr/hal-02484341
Contributeur : Lilloa Université de Lille <>
Soumis le : mercredi 19 février 2020 - 12:03:11
Dernière modification le : mardi 4 mai 2021 - 15:38:42

Similarities in the Raman RBM and D bands in double-wall carbon nanotubes

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