The surface crater defects on HgCdTe/CdZnTe (211) B epilayers were investigated. The results show that the large number of crater defects observed are either linked to the poor compositional homogeneity developed during crystal growth or to problems in the pretreatment procedure. The dissociation of Te 2 plays an important role in defect formation. The studies also show that the density of surface crater defects can be controlled by adjusting the growth conditions and the pretreatment procedures.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)