Optical phonons in laser-deposited CdSxTe1-x films

A. Fischer, Z. Feng, E. Bykov, G. Contreras-Puente, A. Compaan, Fray De Landa Castillo-Alvarado, Jaime Avendaño, Alice Mason

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

We report the longitudinal optical (LO) phonon frequencies for thin films of the ternary alloy CdSxTe1-x and their composition dependence for the full range of x values from pure CdTe to pure CdS. Pulsed laser deposition was used to prepare the polycrystalline thin films including compositions well inside the miscibility gap. We find that this ternary system exhibits a "two-mode" behavior with CdS- and CdTe-like longitudinal optic phonon modes. The modified random-element isodisplacement model yields a good description of the composition dependence of the LO phonon frequencies.

Original languageEnglish
Pages (from-to)3239-3241
Number of pages3
JournalApplied Physics Letters
Volume70
Issue number24
DOIs
StatePublished - 16 Jun 1997

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