TRANSIENT DECAY OF PHOTOEXCITED CARRIERS AND PHOTOLUMINESCENCE EFFICIENCY IN QUANTUM WELLS
量子阱中光生载流子的瞬态衰减过程与发光效率

We present a phenomenological model for the recombination of photoexcited carriers in quantum wells,which takes into account of the nonradiative recombination and the screening effect of free carriers in the wells.The results show,that the decay time of photoluminescence is strongly related to the sample quality,doping level,as well as the excitation intensity.