Tuning the optical properties of alloyed CdSe x S1− x nanoparticles by changing the constituent stoichiometry

Abstract: The spherical particles CdSe x S1− x with 30–80 nm in radius have been successfully prepared by the hydrothermal reaction at 200 °C. The structure characterization which has been carried out using X-ray diffraction (XRD) shows hexagonal crystal structure. Novel properties have been observed via UV–visual absorption spectra and photoluminescence (PL) spectra. The absorption shoulder and the luminescence emission peaks have been tuned by changing the mole ratio of Se in the CdSe x S1− x samples. [Copyright &y& Elsevier]