Characterization of short-period ZnTe-ZnS superlattices grown by MBE

Takeshi Karasawa*, Kazuhiro Ohkawa, Tsuneo Mitsuyu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Structural properties of short period ( <30 Å) ZnTe-ZnS strained-layer superlattices (SLSs) have been examined by Raman spectroscopy and low temperature photoluminescence (PL). The longitudinal optical (LO) phonon of ZnS shows a stress-induced frequency shift, which is in close agreement with theoretical calculation. Although ZnTe LO phonon frequency shifts depending on the SLS structure, there is a discrepancy between experiment and calculation, implying a relaxation in the layer. PL spectra are dominated by one intense peak, and the peak energy shows a trend to shifts according to layer thicknesses and SL period as expected from Kronig-Penney model, but the energy value is lower.

Original languageEnglish (US)
Pages (from-to)464-467
Number of pages4
JournalJournal of Crystal Growth
Volume99
Issue number1-4
DOIs
StatePublished - 1990
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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