Abstract
Time-resolved photon counting technique was employed to study dynamics of photoluminescence from theensembleandsingleCdSe/ZnSquantumdotswiththealloyedcore/shellinterfaces. Theensembledatarevealedenhancedeffectofdisorder-inducedtrapstatesforincreasingemissionenergy,asimpliedfromthechangesinthedistribution of total decay rates. The emission trajectories collected for single quantum dots showed familiar,two-state blinking pattern. It suggests that in a large-band-offset CdSe/ZnS system, the introduced alloying ofthecore-to-shellregioncannotsmoothenoughtheconfinementpotentialinordertosuppressnonradiativeAugerrecombinationandblinking.PACS:78.67.Hc,78.47.jd,78.55.Et
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