Measurements of diffusion coefficients and carrier recombination times of Pbs and Cu₂O semiconductor clusters by time-delayed four wave mixing with incoherent light

The diffusion coefficients and carrier recombination times in PbS and Cu₂O semiconductor colloids were signals and the time-delayed four wave mixing with incoherent light. Based on the relative intensities of the diffracted signals and the background, the parameters were obtained. The diffusion and carrier recombination processes were discussed.