Lattice strain and lattice dynamics of ZnSe-ZnTe strained-layer superlattices
- 1 February 1987
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 61 (3), 1015-1022
- https://doi.org/10.1063/1.338191
Abstract
Lattice strain and lattice dynamics of ZnSe-ZnTe strained-layer superlattices (SLSs) were examined by means of transmission electron microscopy and Raman scattering. Superlattice structures were confirmed from both transmission electron diffraction patterns and bright field images of the samples. Lattice distortions which originated from misfit strains were observed by the lattice image mode. The crystallinity of the adjacent layers was degraded when the layer thickness became large and polycrystalline structures were observed when the layer thickness exceeded the critical layer thickness. Raman scattering was used to assess the magnitude of the strain in the SLSs. Optical phonon frequencies of the components in SLSs were different from those frequencies of the bulk materials. The frequency shifts were used to quantify the strains in the SLSs. The observed shifts corresponded to the calculated values.Keywords
This publication has 17 references indexed in Scilit:
- ZnSe-ZnTe strained layer superlattice on InP substrate by molecular beam epitaxySurface Science, 1986
- Photoluminescence study of ZnSe–ZnTe strained-layer superlattices grown on InP substratesJournal of Applied Physics, 1986
- Growth of a ZnSe-ZnTe strained-layer superlattice on an InP substrate by molecular beam epitaxyApplied Physics Letters, 1986
- Transmission electron microscope observation of lattice image of AlxGa1−xAs-AlyGa1−yAs superlattices with high contrastJournal of Applied Physics, 1985
- Novel material properties of strained-layer superlatticesJournal of Vacuum Science & Technology A, 1985
- Elastic relaxation in transmission electron microscopy of strained-layer superlatticesApplied Physics Letters, 1985
- Direct observation of lattice distortion in a strained-layer superlatticeApplied Physics Letters, 1983
- Ga(As,P) strained-layer superlattices: A ternary semiconductor with independently adjustable band gap and lattice constantJournal of Vacuum Science & Technology B, 1983
- Observation of Folded Acoustic Phonons in a Semiconductor SuperlatticePhysical Review Letters, 1980
- Epitaxial structures with alternate-atomic-layer composition modulationApplied Physics Letters, 1976