Pre-epitaxial treatment of GaSb substrates for liquid-phase growth of homoepitaxial layers
Abstract
The results of investigation to find out the optimal conditions of pre-epitaxial GaSb substrate treatment by chemical etching in inorganic acid mixes are offered. It is shown that application of two-stage chemical treatment in HNO3:HF:H2O=3:1:2 and H2O2:HF:H2O=4:1:15 etchants give a possibility to satisfy the requirements for GaSb substrate in case of liquid phase epitaxy. Optimal conditions of pre-epitaxial GaSb substrate treatment provided the surface roughness value of no more than 0,05 mm and uniform substrate wetting by solution-melt are pointed out.
Copyright (c) 2008 Andronova О. V., Kurak V. V.

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