Semiconductor quantum dots : relaxation dynamics

The geometry and the reduced dimensionality of the semiconductor nanostructures modify significantly the electron states and the processes, which govern their relaxation dynamics. Our earlier studies have allowed us to evidence the important role that plays the coupling between carriers and phonons in quantum wells containing quantum dots of CdZnTe. Actually, we examine the intra-band relaxation of electrons by optical-phonon emission on an ultra-short time scale (<100fs)