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Phosphorus incorporation in single‐walled carbon nanotubes produced by low‐pressure CVD
Author(s) -
Mendoza C. D.,
Freire F. L.,
Larrude D. G.,
Maia da Costa M. E. H.
Publication year - 2016
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.201600377
Subject(s) - raman spectroscopy , carbon nanotube , x ray photoelectron spectroscopy , chemical vapor deposition , materials science , carbon fibers , phosphorus , analytical chemistry (journal) , chemical engineering , inorganic chemistry , chemistry , nanotechnology , organic chemistry , composite material , physics , engineering , composite number , optics , metallurgy
The aim of this work is the synthesis and characterization of single‐walled carbon nanotubes with phosphorus incorporated. Two temperatures (800 and 850 °C) were used to produce the nanotubes in a low‐pressure chemical vapor deposition system using as precursor the solid substance triphenylphosphine without any dilution in liquid. Raman spectroscopy and X‐ray photoelectron spectroscopy were used to characterize the samples. Raman spectroscopy were employed to show the signature of single‐walled carbon nanotubes and a shift in Raman bands was observed due to the presence of phosphorus in the structure comparing with a reference pristine sample. The shift was attributed to changes in the electronic properties of the material due to doping by phosphorus atoms. XPS spectra confirm the presence of phosphorus bonded to carbons atoms, suggesting the phosphorus incorporation in carbon nanotube structure.