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Photoluminescence of Cd S nanoparticles grown on carbon nanotubes covered by a dielectric polymer layer
Author(s) -
Okotrub A. V.,
Kanygin M. A.,
Bulusheva L. G.,
Gevko P. N.,
Larionov S. V.,
Zarubanov A. A.,
Zhuravlev K. S.
Publication year - 2013
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.201300500
Subject(s) - polystyrene , photoluminescence , materials science , carbon nanotube , nanoparticle , polymer , layer (electronics) , chemical engineering , transmission electron microscopy , coating , nanotechnology , composite material , optoelectronics , engineering
Photoluminescence (PL) properties of CdS nanoparticles were studied depending on spacing between the nanoparticles and carbon nanotube (CNT) surface. Using a chemical bath deposition procedure the nanoparticles were grown directly on CNT arrays or arrays covered by a polystyrene layer. The polymer thickness was changed by varying the polystyrene concentration in a solution and the duration of CNT immersing. Transmission electron microscopy and atomic force microscopy were used for estimation of CdS nanoparticle size. An increase in the separation between CdS and CNTs was found to enhance the PL intensity and contribute to the exciton lifetime. PL spectra of CdS nanoparticles grown on a CNT surface and polystyrene layer coating the CNTs.