Internal structure of tunable ternary CdSexS1-x quantum dots unraveled by x-ray absorption spectroscopy

摘要

CdSexS1-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 CdSexS1-x QDs can be tuned by the Se/S molar ratio. To investigate the internal structure of CdSexS1-x QD, x-ray absorption spectroscopy was used to examine the distribution of Se and S inside CdSexS1-x QDs.