Structural features and surface morphology of AlxGayIn1−x−yAszP1−z/GaAs(1 0 0) heterostructures

► AlxGayIn1−x−yAszP1−z is good material for laser diodes excluding necessity of control of their working temperature. ► Along with the main phase AlxGayIn1−x−yAszP1−z in the solid solution appears an additional phase. ► Surface of heterostructures with the new phase present nanoscale objects shaped nanoislands. ► Nanoscale heterogeneity on the surface of the epitaxial film is based on the phase of AlxGa1−xAs solid solution.