Investigation of Temperature Dependent Multi-Walled Nanotube G and D Doublet Using Pseudo-Voigt Functions

    Authors

    G. Freihofer; S. Raghavan;D. Gosztola

    Comments

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    Abbreviated Journal Title

    Appl. Spectrosc.

    Keywords

    Pseudo-Voigt; Raman spectroscopy; Multi-walled nanotube (MWNT); Temperature; MULTIWALLED CARBON NANOTUBES; X-RAY-DIFFRACTION; RAMAN-SPECTROSCOPY; VIBRATIONAL-MODES; AMORPHOUS-CARBON; SPECTRAL-ANALYSIS; SCATTERING; NANOCOMPOSITES; DISPERSION; OXIDATION; Instruments & Instrumentation; Spectroscopy

    Abstract

    A pseudo-Voigt (PV) function is used as a representation of the Stoke's phonon frequency distributions for a multi-walled nanotube (MWNT) composite G and D doublet. Variable peak assignments with the PV function have been shown to enhance the resolution of these bands commonly used for characterization of carbon nanotube (CNT) composites. The peak assignment study was applied to an in-situ temperature experiment where the addition of new sub-bands in the G and D doublet was determined to reduce the uncertainty of the Raman characteristics. Fitting the spectrum with five pseudo-Voigt bands was concluded to give the most consistent results, producing the lowest uncertainty values for G-peak position (v(G)) and D/G intensity ratio.

    Journal Title

    Applied Spectroscopy

    Volume

    67

    Issue/Number

    3

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    321

    Last Page

    328

    WOS Identifier

    WOS:000315833400011

    ISSN

    0003-7028

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