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Self‐organization of cadmium sulfide nanoparticles on the macroscopic scale
Author(s) -
Rempel Andrej A.,
Kozhevnikova Natalia S.,
Van den Berghe Sven,
Van Renterghem Wouter,
Leenaers Ann J. G.
Publication year - 2005
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.200510028
Subject(s) - transmission electron microscopy , cadmium sulfide , microstructure , materials science , colloid , micrometer , scanning electron microscope , nanoparticle , nanotechnology , crystallography , chemical physics , chemical engineering , mineralogy , optics , chemistry , composite material , metallurgy , physics , engineering
A self‐organization of chemical bath deposited cadmium sulfide colloidal particles into well shaped hexagonal prisms of nearly the same size in a micrometer range is found. The self‐organization phenomenon itself and the size of resulting prisms depend on the chemical affinity of the deposition reaction. In spite of the nearly perfect shape, the inner structure of the CdS colloidal crystals is highly disordered and has at least two hierarchy levels. On the scale of scanning electron microscopy, the loose and disordered microstructure of the colloidal crystals consists of nonuniformly shaped coagulates, with sizes between 150 and 250 nm. Transmission electron microscopy shows that the coagulates are polycrystals with large angle boundaries between nonuniformly shaped grains with an average size of 7 ± 2 nm. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)