Computational simulations for ensembles of luminescent silicon nanocrystals: Implications for optical gain and stimulated emission

A Monte Carlo model that simulates energy transfer, radiative decay, and non-radiative trapping within densely packed, lognormally distributed ensembles of silicon nanocrystals (Si-ncs) is developed. The results illustrate the potential of the computational approach toward better understanding these complex materials, and imply that certain key parameters should be met in order for the ultimate application of silicon nanocluster composites in light emitting devices.