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Synthesis CdSexS1-x Core/Shell Type Quantum Dots via One Injection Method


The photoluminescence quantum yield (PL-QY) of ternary colloidal CdSexS1−x quantum dots (QDs), which were prepared by a one-injection method, enhances with increasing S content. The possible enhancement mechanism was explored by structural analysis via X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS). Both found that the enhancement of PL-QY of ternary CdSexS1−x QDs strongly correlated with self-formed core/shell conformation in the non-coordination solution.The research was conducted at the NSRRC beamline 01C1.

L.-Y. Chen, C.-H. Chen, C.-H. Tseng, F.-L. Lai, and B.-J. Hwang

Chem. Commun. 47 , 1592 (2011)