Stimulation of Crystalline Lattice Stabilization of Ga-In-P-As Layers during Heteroepitaxy

Abstract

Every process of heteroepitaxial synthesis from liquid phase of AIIIBV compounds is based on the contact of saturated solution with the binary substrate. The initial difference in the crystalline lattice parameters or in the radii of mutually substituting atoms of the interface causes the shift of the thermodynamic balance point of the system. The change in the total energy of the system connected with this effect causes the deviation of the actual composition of the crystallising solution with respect to the planed one. In the present paper there are shown the results of the theoretical and experimental analysis of the effect of InP substrates on parameters of the GaxIn1-xPyAs1-y layer crystallised from liquid phase.