SPECTROSCOPIC EVIDENCE OF THE FORMATION OF N-H AND N-D COMPLEXES IN PLASMA HYDROGENATED AND DEUTERATED ZNTE-N LAYERS

Homoepitaxially grown nitrogen-doped ZnTe layers have been exposed to a hydrogen (deuterium) plasma. After hydrogen (deuterium) diffusion, a n infrared absorption band appears st 3346 cm(-1) (2489 cm(-1)). It is assigned to the vibrational stretching mode of the N-H (N-D) bond. It is also shown that the absence of such detectable bands in heteroepit axially grown ZnTe/CdZnTe layers can be explained by thermal strains o riginating from the difference between the ZnTe and the CdZnTe thermal expansion coefficients. (C) 1998 American Institute of Physics.