Internal structure of tunable ternary CdSe_xS_(1-x) quantum dots unraveled by x-ray absorption spectroscopy

摘要

CdSe_xSi_(1-x) quantum dots (QDs) were synthesized by a simple one-injection non-coordinate solvent method. The composition distribution of Se and S and the internal structures of the CdSe_xS_(1-x) QDs can be tuned by the Se/S molar ratio. To investigate the internal structure of CdSe_xS_(1-x) QD, x-ray absorption spectroscopy was used to examine the distribution of Se and S inside CdSe_xS_(1-x) QDs.