Growth of Si1−xGex on silicon by liquid-phase epitaxy

Abstract
We demonstrate heteroepitaxial growth of smooth homogeneous Si1−xGex layers on crystalline silicon substrates by means of liquid‐phase epitaxy. For a given saturation temperature Tsat, different alloy compositions x can be grown by varying the composition of the solutions. However, smooth epitaxial layers are obtained only up to a critical germanium content xc which increases as Tsat decreases and depends upon the choice of solvent.