One-dimensional growth of rock-salt PbS nanocrystals
mediated by surfactant/polymer templates
Shihe Yang*, Suhua Wang, and K. K. Fung
*Department of Chemistry, Hong Kong
University of Science and Technology, Clear Water Bay, Kowloon, Hong
Kong
Abstract: A novel method has been developed for
the synthesis of compound semiconductor nanorods (PbS). This method
consists of using a functionalized lead(II) salt Pb(AOT)2 as the precursor
and a polymer (PVB) as both a matrix and a stabilizer. The PbS nanocrystallites
prepared using this method are all oriented with their (100) lattice
planes parallel to the substrate surface. Possible mechanisms are
briefly discussed for the growth of the rod-shaped PbS nanocrystals
with the preferred orientation in the polymer film.
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