Jm. Arias et al., MOLECULAR-BEAM EPITAXY HGCDTE GROWTH-INDUCED VOID DEFECTS AND THEIR EFFECT ON INFRARED PHOTODIODES, Journal of electronic materials, 24(5), 1995, pp. 521-524
We have carried out a study and identified that MBE HgCdTe growth-indu
ced void defects are detrimental to long wavelength infrared photodiod
e performance. These defects were induced during nucleation by having
surface growth conditions deficient in Hg. Precise control and reprodu
cibility of the CdZnTe surface temperature and beam lures are required
to minimize such defects. Device quality material with void defect co
ncentration values in the low 10(2) cm(-2) range were demonstrated.