Photoluminescence of CdSe/ZnS core/shell quantum dots enhanced by energy transfer from a phosphorescent donor

We demonstrate exciton energy transfer from a thin film of phosphorescent dye fac tris(2-phenylpyridine) iridium (Ir(ppy)3) to a monolayer of colloidal CdSe/ZnS core/shell quantum dots (QDs) using time-resolved photoluminescence (PL) measurements. We also show that observed PL dynamics are dominated by exciton diffusion within the Ir(ppy)3 film to the QD layer.