Oxygen vibrational modes in ZnS1-xOx alloys

Jesse Huso; Jacob R. Ritter; Dinesh Thapa; Kin Man Yu; Leah Bergman; Matthew D. McCluskey

doi:10.1063/1.4998748

Oxygen vibrational modes in ZnS_1-xO_x alloys

Jesse Huso
, Jacob R. Ritter
, Dinesh Thapa
, Kin Man Yu
, Leah Bergman
, Matthew D. McCluskey

Department of Physics

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

6 Citations (Scopus)

42 Downloads (CityUHK Scholars)

Abstract

ZnS_1-xO_x alloy films were studied via resonant Raman spectroscopy. Films with a low oxygen content exhibit ZnS longitudinal optical modes and additional modes attributed to O local vibrational modes (LVMs). The frequencies of these modes are explained by a simple mass-defect model. As the O content increases, pairs and larger clusters form, causing the O mode to transition from an LVM to a delocalized phonon. The composition dependence of the modes shows agreement with the modified random element isodisplacement model. Low-temperature measurements show that the O-related mode is composed of multiple features, attributed to zincblende and wurtzite structural regions.

Original language	English
Article number	161537
Journal	Journal of Applied Physics
Volume	123
Issue number	16
Online published	Dec 2017
DOIs	https://doi.org/10.1063/1.4998748
Publication status	Published - 28 Apr 2018

Research Keywords

Phonons
Raman spectroscopy
Raman spectra
Transition
Elasticity

Publisher's Copyright Statement

COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Jesse Huso, Jacob R. Ritter, Dinesh Thapa, Kin Man Yu, Leah Bergman, and Matthew D. McCluskey , "Oxygen vibrational modes in ZnS1−xOx alloys", Journal of Applied Physics 123, 161537 (2018) and may be found at https://doi.org/10.1063/1.4998748.

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title = "Oxygen vibrational modes in ZnS1-xOx alloys",

abstract = "ZnS1-xOx alloy films were studied via resonant Raman spectroscopy. Films with a low oxygen content exhibit ZnS longitudinal optical modes and additional modes attributed to O local vibrational modes (LVMs). The frequencies of these modes are explained by a simple mass-defect model. As the O content increases, pairs and larger clusters form, causing the O mode to transition from an LVM to a delocalized phonon. The composition dependence of the modes shows agreement with the modified random element isodisplacement model. Low-temperature measurements show that the O-related mode is composed of multiple features, attributed to zincblende and wurtzite structural regions.",

keywords = "Phonons, Raman spectroscopy, Raman spectra, Transition, Elasticity",

author = "Jesse Huso and Ritter, \{Jacob R.\} and Dinesh Thapa and Yu, \{Kin Man\} and Leah Bergman and McCluskey, \{Matthew D.\}",

year = "2018",

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language = "English",

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T1 - Oxygen vibrational modes in ZnS1-xOx alloys

AU - Huso, Jesse

AU - Ritter, Jacob R.

AU - Thapa, Dinesh

AU - Yu, Kin Man

AU - Bergman, Leah

AU - McCluskey, Matthew D.

PY - 2018/4/28

Y1 - 2018/4/28

N2 - ZnS1-xOx alloy films were studied via resonant Raman spectroscopy. Films with a low oxygen content exhibit ZnS longitudinal optical modes and additional modes attributed to O local vibrational modes (LVMs). The frequencies of these modes are explained by a simple mass-defect model. As the O content increases, pairs and larger clusters form, causing the O mode to transition from an LVM to a delocalized phonon. The composition dependence of the modes shows agreement with the modified random element isodisplacement model. Low-temperature measurements show that the O-related mode is composed of multiple features, attributed to zincblende and wurtzite structural regions.

AB - ZnS1-xOx alloy films were studied via resonant Raman spectroscopy. Films with a low oxygen content exhibit ZnS longitudinal optical modes and additional modes attributed to O local vibrational modes (LVMs). The frequencies of these modes are explained by a simple mass-defect model. As the O content increases, pairs and larger clusters form, causing the O mode to transition from an LVM to a delocalized phonon. The composition dependence of the modes shows agreement with the modified random element isodisplacement model. Low-temperature measurements show that the O-related mode is composed of multiple features, attributed to zincblende and wurtzite structural regions.

KW - Phonons

KW - Raman spectroscopy

KW - Raman spectra

KW - Transition

KW - Elasticity

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DO - 10.1063/1.4998748

M3 - RGC 21 - Publication in refereed journal

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JO - Journal of Applied Physics

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