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We report here on recent characterizations of HgTe–CdTe superlattices and on the growth of related novel superlattice systems. X-ray diffraction investigations carried out during the annealing of HgTe–CdTe superlattices have shown that an appreciable interdiffusion occurs at the HgTe–CdTe interface for a temperature of 185 °C, which is the growth temperature. Hg1−xCdxTe–CdTe superlattices have been grown for the first time. Their Hall characterization, along with magnetotransport experiments seem to indicate that high hole mobilities observed in p-type HgTe–CdTe superlattices are due to some type of relationship between the 2D heavy hole gas and the interface state existing in type III superlattices. We report also on the successful growth of a novel strained superlattice system, i.e., HgTe–ZnTe, which appears to be an interesting infrared material.
Faurie et al. (1986) studied this question.