Abstract
CdS nanostructured materials were prepared by a chemical synthesis via the reaction of Cd(NO 3) 2·4H 2O and various sulfur sources. The products were characterized by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). The results indicated that the samples prepared with Na 2S·9H 2O were zinc blende crystal structure in sphere-like shape and the products prepared with thiourea and sulfur were both wurtzite crystal structures in rod-like shape. The room-temperature luminescence revealed that all the CdS nanostructured materials had a broad green emission band and a red emission band. In addition, the growth mechanisms of the CdS nanocrystals were preliminarily discussed.
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