Interacting Phonons between Layers in Raman Spectra of Carbon Nanotubes inside Boron Nitride Nanotubes

Desman Perdamaian Gulo, Nguyen Tuan Hung, Wei Liang Chen, Shuhui Wang, Ming Liu, Esko I. Kauppinen, Shigeo Maruyama, Yu Ming Chang, Riichiro Saito, Hsiang Lin Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We present the resonant Raman spectra of a single-wall carbon nanotube inside a multiwall boron nitride nanotube (SWNT@BNNT). At EL = 1.58 eV, SWNT@BNNT exhibited resonant Raman spectra at 807 (ωBN) and 804 cm-1Gr). Their intensities almost disappeared at EL = 2.33 eV. We assigned ωBN to the out-of-plane BN phonon mode that coupled with ωGr. At EL = 4.66 eV, the G+ and G- bands of the SWNT@BNNT red-shifted 3.8 cm-1 compared with the SWNT, suggesting the interwall interactions between the in-plane modes of SWNT and BNNT. Moreover, the E2g mode of the BNNT in SWNT@BNNT appeared at 1370.3 ± 0.1 cm-1, which is undistinguishable for EL < 3 eV because of the overlap with the D band frequency. The assignment of the present Raman spectra was confirmed through the first-principles calculations.

Original languageEnglish
Pages (from-to)10263-10270
Number of pages8
JournalJournal of Physical Chemistry Letters
Volume14
Issue number45
DOIs
Publication statusPublished - 2023 Nov 16

ASJC Scopus subject areas

  • General Materials Science
  • Physical and Theoretical Chemistry

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