High Order Oxygen Local Vibrational Modes in ZnS1−xOx

Substitution of O in the ZnS lattice is observed to result in a doublet consisting of two local vibrational modes (LVMs) and a second order harmonic of the LVMs. The first order doublet is attributed to vibrational modes of a defect with trigonal (C3v) symmetry. The results of temperature dependent...

Full description

Saved in:
Bibliographic Details
Published in:Physica Status Solidi B. Basic Solid State Physics 2019-08, Vol.256 (8), p.n/a
Main Authors: Huso, Jesse, Ritter, Jacob R., Bergman, Leah, McCluskey, Matthew D.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
cascade
cascade model
local modes
raman
Raman spectroscopy
resonance
semiconductors
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Substitution of O in the ZnS lattice is observed to result in a doublet consisting of two local vibrational modes (LVMs) and a second order harmonic of the LVMs. The first order doublet is attributed to vibrational modes of a defect with trigonal (C3v) symmetry. The results of temperature dependent resonant Raman scattering and anti‐Stokes scattering support this assignment. The substitution of O in the lattice also leads to the presence of LVM + nLO combination modes, which are interpreted in terms of the cascade model and resonance effects. Local vibrational modes of substitutional oxygen in ZnS are studied. Under resonant excitation a bound exciton is formed at oxygen sites enhancing the Raman scattering intensity. The generation of LVM + LO combinations is interpreted via the cascade model. The second order local mode and LO replica are also reported. A doublet in the local mode is attributed a defect with C3v symmetry.
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.201800607