Exciton interactions in CdS nanocrystal aggregates in reverse micelle

摘要

Here we report the formation and spectroscopic properties of cadmium sulfide (CdS) nanocrystal systems:individual nanocrystal and CdS aggregates.The optical absorption and luminescence spectra of the aggregated CdS nanocrystals and individual nanocrystal show exciton aggregate and individual exciton characteristics.Although it is not Bose-Einstein condensation,such aggregated quantum dots (QDs) seem to supply us opportunity to study the interactions and condensation of excitons in multi-QDs system,not in the separated QDs system.