Resonant nano-photoluminescence of single CdSe/ZnSe self-assembled quantum dots

Summary form only given. We have used time-integrated photoluminescence (PL) and photoluminescence excitation spectroscopy to study excitons confined to CdSe/ZnSe self assembled quantum dots which are created through resonant excitation. We find that the intensity of individual sharp (/spl ap/150 /spl mu/eV) peaks are dramatically enhanced when the excitation laser is an integral multiple of phonon energies above the emission energy. The samples are grown by molecular beam epitaxy (MBE) with 3 monolayers of CdSe grown on top of a ZnSe buffer layer before being capped by a thin layer of ZnSe. We show PL spectra for sampling areas ranging from 8 /spl mu/m to 170 nm. We have recently begun time-resolved PL measurements and hope to resolve the differing relaxation processes for resonant and nonresonant excitation.