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Photoluminescence of single‐wall carbon nanotube films
Author(s) -
Chernov Alexander I.,
Obraztsova Elena D.
Publication year - 2010
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.201000192
Subject(s) - carbon nanotube , materials science , photoluminescence , raman spectroscopy , polymer , chemical engineering , nanotube , nanotechnology , thin film , substrate (aquarium) , composite material , optoelectronics , optics , oceanography , physics , engineering , geology
In this work, we report the photoluminescence (PL) studies of the films produced by different methods from pristine single‐wall carbon nanotubes (SWNTs). The suspensions of CoMoCAT and HiPCO SWNTs were used to make two different types of films: the polymer films with embedded SWNTs and the SWNT films deposited onto quartz substrates through filtration. A density gradient ultracentrifugation (DGU) has been used for enrichment of the initial carbon nanotube suspensions with semiconducting SWNTs and extraction of various diameter nanotubes to reveal a role of the nanotube interaction in the films. Optical diagnostic techniques including Raman spectroscopy, UV–VIS–NIR absorption spectroscopy, and PL have been used for characterization and comparison of the initial suspensions and films formed from them. A PL mapping has revealed an arrangement of carbon nanotubes inside the films. A cross‐linkage between the individual SWNTs appeared to be higher inside the films deposited via filtration than in the polymer films with dispersed SWNTs.The images of objects under investigation (from left to right): a SWNT suspension after DGU; a film deposited onto quartz substrate and a polymer film with embedded SWNTs