Design of pseudo-ternary and quaternary alloys by superlattices consisting of (zn,cd)(s,se) binary ii-vi compounds

A. W. Jia, M. Kobayashi, A. Yoshikawa

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Theoretical design of pseudo-ternary and quaternary alloys by superlattice structures consisting of (Zn,Cd)(S,Se) binary II-VI compounds has been studied. For pseudo-ternary ZnCdS and ZnCdSe alloys, the superlattices with two layers in a cycle, i.e., ZnS/CdS and ZnSe/CdSe are considered, and for pseudo-quaternary ZnCdSSe alloy, the two superlattice structures with more than two layers in a cycle are considered. In order to design and evaluate these superlattices, the expression for the equilibrium in-plane lattice constant of these superlattices has been derived by minimizing the total elastic strain energy in the cycle. The combinations of layer thicknesses in a cycle and the effective bandgap of these superlattices have been calculated while the elastic strain effect was included. The usefulness of these superlattice structures has been evaluated.

Original languageEnglish
Pages (from-to)117-121
Number of pages5
JournalJournal of Electronic Materials
Volume24
Issue number3
DOIs
Publication statusPublished - 1995 Mar 1
Externally publishedYes

Keywords

  • Effective bandgap
  • ZnCdSSe
  • expression of in-plane lattice constant
  • lattice-matched superlattice

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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