Quality Hg1-xCdxTe films grown by the modified melt-etch liquid phase epitaxy method

Abstract

Hg1-xCdxTe films were grown by a modified meltetch liquid phase epitaxial (LPE) technique which includes both substrate and epilayer etchback steps. The crystal quality of epilayer has been investigated by means of transmission electron microscope (TEM), scanning electron microscope (SEM), and double crystal x-ray rock curve (XRD). It has been found that adequate meltetch of the substrate at the beginning of LPE provides a fresh and flat surface for epitaxial growth, while epilayer meltetch at the end of LPE may prevent spurious and melt sticking.