EFFECT OF INTERFACE ENERGY ON EROSION OF A(III)B(V) SUBSTRATES DURINGLIQUID-PHASE HETEROEPITAXY

Erosive damage to the solid phase surface is the frequently observed e ffect of the exposure of the multicomponent liquid solution of A(III)B (V) compounds to A(III)B(V) binary substrates. This erosion particular ly affects heterocompositions with a high lattice parameter mismatch. The mechanisms leading to such a phenomenon were analyzed for the case of the Ga-In-P-As/InP and Ga-In-P-As/GaAs heteropairs. Based on the m odel of interatomic interactions at the interface, it was found that t he erosion instability of the interface depends mainly on the excessiv e energy of the lattice in this region.