Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiency

8 pages, 8 figures, 2 tables

Detalles Bibliográficos
Autores: Ruiz-Perona, A., Sánchez, Y., Guc, M., Calvo-Barrio, L., Jawhari, T., Merino, J. M., León, M., Caballero, Raquel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/373851
Acceso en línea:http://hdl.handle.net/10261/373851
https://api.elsevier.com/content/abstract/scopus_id/85080040605
Access Level:acceso abierto
Palabra clave:Ge
Kesterite
Solar cells
ZnSe
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spelling Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiencyRuiz-Perona, A.Sánchez, Y.Guc, M.Calvo-Barrio, L.Jawhari, T.Merino, J. M.León, M.Caballero, RaquelGeKesteriteSolar cellsZnSe8 pages, 8 figures, 2 tablesThe effect of Zn content on compositional, structural and vibrational properties of Cu2ZnSn1-xGexSe4 (CZTGSe, x ~ 0.5) thin films is studied. Kesterite layer is deposited by co-evaporation onto 5 × 5 cm2 Mo/SLG substrate followed by a thermal treatment at maximum temperature of 480 °C, obtaining areas with different composition and morphology which are due to the sample position in the co-evaporation system and to the non-uniform temperature distribution across the substrate. Kesterite layers with higher Zn amounts are characterized by lower Cu and Ge contents; however, a uniform Ge distribution through the absorber layer is detected in all cases. The excess Zn concentration leads to the formation of ZnSe secondary phase on the surface and in the bulk of the absorber as determined by Raman spectroscopy. When higher Ge content and no ZnSe are present in the absorber layer, a compact structure is formed with larger grain size of kesterite. This effect could explain the higher Voc of the solar cell. The Zn content does not affect the bandgap energy significantly (Eg near 1.3 eV), although the observed effect of Zn excess in CZTGSe results in a decreased device performance from 6.4 to 4.2%. This investigation reveals the importance of the control of the off-stoichiometric CZTGSe composition during the deposition process to enhance solar cells properties.This work was supported by Spanish Ministry of Science, Innovation and Universities Project WINCOST (ENE2016-80788-C5-2-R) and European Project INFINITE CELL (H2020-MSCA-RISE-2017-777968). ARP also acknowledges financial support from Community of Madrid within Youth Employment Program (PEJD-2017-PRE/IND-4062). MG acknowledges the financial support from ACCIÓ-Generalitat de Catalunya within the TECNIOspring Plus fellowship (TECSPR18-10048)Peer reviewedElsevierMinisterio de Ciencia, Innovación y Universidades (España)European CommissionComunidad de MadridGeneralitat de Catalunya#NODATA##NODATA##NODATA##NODATA##NODATA##NODATA##NODATA##NODATA#202420242020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/373851https://api.elsevier.com/content/abstract/scopus_id/85080040605reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI//ENE2016-80788-C5-2-Rinfo:eu-repo/grantAgreement/EC/H2020/777968PEJD-2017-PRE/IND-4062Solar Energyhttps://doi.org/10.1016/j.solener.2020.02.082Noinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3738512026-05-22T06:33:51Z
dc.title.none.fl_str_mv Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiency
title Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiency
spellingShingle Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiency
Ruiz-Perona, A.
Ge
Kesterite
Solar cells
ZnSe
title_short Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiency
title_full Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiency
title_fullStr Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiency
title_full_unstemmed Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiency
title_sort Influence of Zn excess on compositional, structural and vibrational properties of Cu2ZnSn0.5Ge0.5Se4 thin films and their effect on solar cell efficiency
dc.creator.none.fl_str_mv Ruiz-Perona, A.
Sánchez, Y.
Guc, M.
Calvo-Barrio, L.
Jawhari, T.
Merino, J. M.
León, M.
Caballero, Raquel
author Ruiz-Perona, A.
author_facet Ruiz-Perona, A.
Sánchez, Y.
Guc, M.
Calvo-Barrio, L.
Jawhari, T.
Merino, J. M.
León, M.
Caballero, Raquel
author_role author
author2 Sánchez, Y.
Guc, M.
Calvo-Barrio, L.
Jawhari, T.
Merino, J. M.
León, M.
Caballero, Raquel
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
European Commission
Comunidad de Madrid
Generalitat de Catalunya
#NODATA#
#NODATA#
#NODATA#
#NODATA#
#NODATA#
#NODATA#
#NODATA#
#NODATA#
dc.subject.none.fl_str_mv Ge
Kesterite
Solar cells
ZnSe
topic Ge
Kesterite
Solar cells
ZnSe
description 8 pages, 8 figures, 2 tables
publishDate 2020
dc.date.none.fl_str_mv 2020
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/373851
https://api.elsevier.com/content/abstract/scopus_id/85080040605
url http://hdl.handle.net/10261/373851
https://api.elsevier.com/content/abstract/scopus_id/85080040605
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI//ENE2016-80788-C5-2-R
info:eu-repo/grantAgreement/EC/H2020/777968
PEJD-2017-PRE/IND-4062
Solar Energy
https://doi.org/10.1016/j.solener.2020.02.082
No
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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