Abstract
ZnSe-ZnSSe and ZnSe-ZnS strained-layer superlattices (SLS), exhibiting excellent optical properties, have for the first time been prepared on (100) GaAs substrates by a conventional low-pressure metal-organic chemical-vapor-deposition (MOCVD) technique. The experimental X-ray diffraction patterns are analyzed in terms of the kinematic approximation from which the strains being included in each layer can be quantitatively evaluated. The excitonic line and its spectral shape in the SLS, depending upon the composition of S in the ZnSSe barrier layer, are investigated at 4.2 K; with decreasing the barrier height the ground-state exciton binding energy is considerably lowered and its linewidth becomes narrow. We have found light-hole and heavy-hole exciton transitions in the absorption spectrum and in particular the existence of the light-hole exciton is confirmed by the excitation spectrum.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
