Our research efforts are strongly motivated by new experiments. Using a combination of analytic techniques and computer simulation, we strive to find and explain perplexing observations, to provide quantitative and qualitative explanations of the experimental puzzles, and to suggest new experiments.
For example, the idea of the phonon bottleneck drove massive search for multiple excitons in semiconductor quantum dots, in hopes for a drastic improvement of solar cell efficiencies. Eventually multiple excitons were found, but the phonon bottleneck was not observed. We rationalized the absence of the bottleneck, proposed a mechanism for generation of multiple excitons without the bottleneck, and supported our conclusions by atomistic calculations.