Photochemical synthesis and characterization of CdSe nanoparticles

CdSe nanoparticles were prepared by a simple reaction between CdCl2 and Na2SeSO3 in the presence of a complexant using photoirradiation. The nanoparticles were characterized by X-ray diffraction (XRD), electron microscopy (TEM), diffuse reflection and photoluminescence (PL) spectrum. The sizes of the as-prepared sample were calculated by the Debye-Scherrer formula according to the XRD spectrum to be about 7 nm. Similar results can also been obtained from the TEM images. (C) 2001 Elsevier Science B.V. All rights reserved.