On the optimization of asymmetric barrier layers in InAlGaAs/AlGaAs laser heterostructures on GaAs substrates

A. E. Zhukov, L. V. Asryan, Elizaveta Semenova, F. I. Zubov, N. V. Kryzhanovskaya, M. V. Maximov

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Band offsets at the heterointerface are calculated for various combinations of InAlGaAs/AlGaAs heteropairs that can be synthesized on GaAs substrates in the layer-by-layer pseudomorphic growth mode. Patterns which make it possible to obtain an asymmetric barrier layer providing the almost obstruction-free transport of holes and the highest possible barrier height for electrons are found. The optimal compositions of both compounds ((InAlGaAs)-Al-0.232-Ga-0.594-As-0.174/(AlGaAs)-Ga-0.355-As-0.645) at which the flux of electrons across the barrier is at a minimum are determined with consideration for the critical thickness of the indium-containing quaternary solid solution.
    Original languageEnglish
    JournalSemiconductors
    Volume49
    Issue number7
    Pages (from-to)935-938
    ISSN1063-7826
    DOIs
    Publication statusPublished - 2015

    Keywords

    • PHYSICS,
    • Physics
    • Magnetism, Magnetic Materials
    • Physics, general
    • Physics and Astronomy

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