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Quantitative composition of a single‐walled carbon nanotube sample: Raman scattering versus photoluminescence
Author(s) -
Heeg Sebastian,
Malić Ermin,
Casiraghi Cinzia,
Reich Stephanie
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982352
Subject(s) - photoluminescence , raman spectroscopy , carbon nanotube , raman scattering , materials science , excitation , analytical chemistry (journal) , molecular physics , photoluminescence excitation , nanotube , phonon , optical properties of carbon nanotubes , spectroscopy , coupling (piping) , optoelectronics , nanotechnology , chemistry , optics , condensed matter physics , physics , chromatography , quantum mechanics , metallurgy
We investigated the spectral data of three carbon nanotube (CNT) species obtained by Raman spectroscopy and photoluminescence (PL) measurements. The corresponding relative signal intensities without further corrections yielded significantly different relative distributions of the CNT species. Theoretical calculations of optical transition probabilities and electron–phonon coupling were included, providing simple models in order to estimate the relative distribution of the three species within the sample. We proposed the product of PL and PL excitation intensities to be a candidate for quantitative analysis of CNT species. Applying the models, we confirmed that both spectroscopic methods agree on one nanotube species dominating the distribution.