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*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
頁(從 - 到)10263-10270
頁數8
期刊Journal of Physical Chemistry Letters
14
發行號45
DOIs
出版狀態已發佈 - 2023 11月 16

ASJC Scopus subject areas

  • 一般材料科學
  • 物理與理論化學

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