A proposal for p-type ZnS1-xSex–ZnTe superlattices

Abstract

Energy band structures ZnSe–ZnTe and ZnS_0.5Se_0.5 –ZnTe superlattices are calculated using the Kronig‐Penney model taking into account strain effects due to the lattice mismatches between the materials. The ZnSe(30 Å)–ZnTe(5 Å) and the ZnS_0.5Se_0.5 (30 Å)–ZnTe(5 Å) superlattices have energy gaps of 2.5 and 2.7 eV, respectively. The ZnS_0.5Se_0.5 (30 Å)–p‐type ZnTe(5 Å) superlattice is considered to be a p‐type material of 10¹⁷ cm⁻³ and to be available for a hole injection layer to an n‐type ZnSe layer.