Abstract:The photovohage spectra of Zn1-xCdxSe/ZnSe multiple quantum wells on GaAs substrates at temperatures from 18K to 300K were measured. The photovohaic effects and exciton transitions of Zn1-xCdxSe/ZnSe multiple quantum wells were studied. The experimental results show that there is marked quantum confined effect in Zn1-xCdxSe/ZnSe quantum well and the exciton transitions can be observed from 18 K to room temperature,which indicates that Zn1-xCdxSe/ZnSe quantum well could be a kind of suitable materials for bluegreen photonic devices.