Correlation between the density of defect states (DDS) and cross-linking of corner/edge sharing GeSe(4) tetrahedral structural units

We have estimated the DDS in the STSG [Se(78-x)Te(20)Sn(2)Ge(x) (x = 0, 2, 4, 6)] system by using the Correlated Barrier Hopping (CBH) model by performing A.C. conduction measurements in the frequency range (1 kHz–10 kHz) and temperature underneath the glass transition temperature (303–333) K. The d...

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Detalles Bibliográficos
Autores principales: Pal, Shiv Kumar, Dahshan, A., Mehta, Neeraj
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10643265/
https://www.ncbi.nlm.nih.gov/pubmed/38027941
http://dx.doi.org/10.1016/j.heliyon.2023.e21424
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author Pal, Shiv Kumar
Dahshan, A.
Mehta, Neeraj
author_facet Pal, Shiv Kumar
Dahshan, A.
Mehta, Neeraj
author_sort Pal, Shiv Kumar
collection PubMed
description We have estimated the DDS in the STSG [Se(78-x)Te(20)Sn(2)Ge(x) (x = 0, 2, 4, 6)] system by using the Correlated Barrier Hopping (CBH) model by performing A.C. conduction measurements in the frequency range (1 kHz–10 kHz) and temperature underneath the glass transition temperature (303–333) K. The detailed analysis reveals that bi-polaron hopping is a leading conduction mechanism over single-polaron hopping. Further, there is a noticeable reduction in DDS with increasing concentration of Ge beyond the composition x = 2. A close inspection indicates that cross-linking of Se with Ge has an important role in controlling the DDS in terms of the corner/edge sharing configurations in the structural unit of GeSe(4) tetrahedral.
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spelling pubmed-106432652023-10-30 Correlation between the density of defect states (DDS) and cross-linking of corner/edge sharing GeSe(4) tetrahedral structural units Pal, Shiv Kumar Dahshan, A. Mehta, Neeraj Heliyon Research Article We have estimated the DDS in the STSG [Se(78-x)Te(20)Sn(2)Ge(x) (x = 0, 2, 4, 6)] system by using the Correlated Barrier Hopping (CBH) model by performing A.C. conduction measurements in the frequency range (1 kHz–10 kHz) and temperature underneath the glass transition temperature (303–333) K. The detailed analysis reveals that bi-polaron hopping is a leading conduction mechanism over single-polaron hopping. Further, there is a noticeable reduction in DDS with increasing concentration of Ge beyond the composition x = 2. A close inspection indicates that cross-linking of Se with Ge has an important role in controlling the DDS in terms of the corner/edge sharing configurations in the structural unit of GeSe(4) tetrahedral. Elsevier 2023-10-30 /pmc/articles/PMC10643265/ /pubmed/38027941 http://dx.doi.org/10.1016/j.heliyon.2023.e21424 Text en © 2023 The Authors. Published by Elsevier Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Research Article
Pal, Shiv Kumar
Dahshan, A.
Mehta, Neeraj
Correlation between the density of defect states (DDS) and cross-linking of corner/edge sharing GeSe(4) tetrahedral structural units
title Correlation between the density of defect states (DDS) and cross-linking of corner/edge sharing GeSe(4) tetrahedral structural units
title_full Correlation between the density of defect states (DDS) and cross-linking of corner/edge sharing GeSe(4) tetrahedral structural units
title_fullStr Correlation between the density of defect states (DDS) and cross-linking of corner/edge sharing GeSe(4) tetrahedral structural units
title_full_unstemmed Correlation between the density of defect states (DDS) and cross-linking of corner/edge sharing GeSe(4) tetrahedral structural units
title_short Correlation between the density of defect states (DDS) and cross-linking of corner/edge sharing GeSe(4) tetrahedral structural units
title_sort correlation between the density of defect states (dds) and cross-linking of corner/edge sharing gese(4) tetrahedral structural units
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10643265/
https://www.ncbi.nlm.nih.gov/pubmed/38027941
http://dx.doi.org/10.1016/j.heliyon.2023.e21424
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AT dahshana correlationbetweenthedensityofdefectstatesddsandcrosslinkingofcorneredgesharinggese4tetrahedralstructuralunits
AT mehtaneeraj correlationbetweenthedensityofdefectstatesddsandcrosslinkingofcorneredgesharinggese4tetrahedralstructuralunits

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