Abstract
The present paper reviews works devoted to control over the properties of epitaxial GaAs by incorporation of excess (non-stoichiometric) arsenic into the GaAs films grown by molecular-beam epitaxy (MBE) at low-temperature (LT). The effect of excess arsenic on the material structure and properties is analyzed for both as-grown and annealed LT-GaAs layers. The effect of doping on the incorporation of excess arsenic is also examined. The data on the effect of excess arsenic on the properties of the Ga0.47In0.53As solid solution are presented. The specific features of the mechanism of the excess arsenic incorporation into the solid phase during the low-temperature epitaxial growth are discussed.
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