Surface‐modification effects on luminescence properties of CdS and CdMnS quantum dots prepared by a reverse‐micelle method

Abstract

We have investigated surface modification effects on luminescence properties of CdS and CdMnS quantum dots (QDs) prepared by a reverse-micelle method. Before the surface modification, a broad luminescence band that originates from defects is dominant in CdS QDs. By the modification, the intensity of the band-edge luminescence is remarkably increased. The intensity of Mn2+ luminescence is also increased by the surface modification of CdMnS QDs. These results clearly indicate that the surface modification considerably improves the luminescence properties of QDs.