Photoluminescence from single CdSe quantum rods

We report here the first observation of photoluminescence from single CdSe quantum confined nanorods (quantum rods). Luminescence imaging spectra of individual rods were obtained for two samples, with average aspect ratio of 2 and 4, respectively. Typical room-temperature luminescence spectral line widths of the rods in both samples are less than 60 meV, which are about the same as that of high-quality CdSe/CdS core/shell single quantum dots. Single quantum rods also exhibit luminescence intermittence as observed in single-dot systems.