title: One-pot synthesis of high-quality zinc-blende CdS nanocrystals.
abstract: This paper reports a one-pot synthetic method for producing CdS nanocrystals. We have demonstrated that the nanocrystal nucleation and growth stages can be automatically separated in a homogeneous system with the presence of nucleation initiators. Accelerators used for more than 70 years in rubber vulcanization (i.e., tetraethylthiuram disulfides, and 2,2'-dithiobisbenzothiazole) were found to be effective nucleation initiators for CdS nanocrystal synthesis. The as-prepared CdS nanocrystals are highly monodisperse and possess a zinc blende crystal structure. The quantum yield of the band-gap photoluminescence is up to 12% when the surface-trap emission was totally eliminated after a gentle oxidation under laboratory fluorescent light.
authors.affiliation: Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA. cao@chem.ufl.edu
authors.forename: Y Charles
authors.initials: YC
authors.lastname: Cao
authors.forename: Jianhui
authors.initials: J
authors.lastname: Wang