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半导体学报 1991
Photoluminescence Study of ZnSe_(1-x)S_x-ZnSe Strained-Layer Superlattice
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Abstract:
Photoluminescence (PL) technique is used to diagnose the quality of ZnSe_(1-x)S_x-ZnSeSLS. The influence of excitation defnsity,fluctuations of well thickness and barrier heighton the fluorescence spectra of SLS are discussed. The relation of the fluctuations of well thi-ckness and barrier height to the broadening of n=1 exciton energies are calculated usingKronig-Penney model. We have analysed for the first time the relation of exciton lineshapeto each growth parameter in the temperature range from 77 K to 250 K for ZnSe_(1-x)S_x-Zu-Se SLS.