Abstract
The optical properties of quantum dots (QDs) formed in GaAs or Al0.3Ga0.7As matrices by overgrowth of initial InAs islands formed in the Stranski-Krastanov mode with thin AlAs/InAlAs layers have been studied. It is shown that no transport of carriers between the QDs occurs in the temperature range 10–300 K, so the carrier distribution is of a nonequilibrium nature. The thermal excitation of carriers from the QDs is suppressed by an increase in the energy spacing between the ground and excited states, absence of the level related to the wetting layer, and higher carrier localization energy in the QDs with respect to the continuum states when the Al0.3Ga0.7As matrix is used.
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.
