摘要
I.INTRODUCTION Since the 1970s, the study of stimulated emission of CdS and other Ⅱ--Ⅵ compound semiconductors has speeded up the development of the study of highly excited semiconductors. It was shown that the ex-el scattering induces the main recombination process that yields high gain above 100 K both experimentally and theoretically. The results obtained so far concern mainly the stimulated emission, and most of the efforts are devoted to the temperature dependence of emission spectra. Only a few works are concerning the dynamics of the luminescence due to scattering.
基金
Project supported by the National Natural Science Foundation of China
