Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells

Detalhes bibliográficos
Autor(a) principal: Fernandes, Silvia L. [UNESP]
Data de Publicação: 2016
Outros Autores: Véron, Anna C., Neto, Nilton F.A. [UNESP], Nüesch, Frank A., Dias da Silva, José H. [UNESP], Zaghete, Maria A. [UNESP], Graeff, Carlos F. de O. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.matlet.2016.06.018
http://hdl.handle.net/11449/173591
Resumo: Perovskite solar cells have attracted attention due its high conversion efficiency and low cost. In this work, Nb2O5 is used as an alternative compact hole blocking layer in conjunction with mesoporous TiO2 and CH3NH3PbI3 in perovskite solar cells. The influence of Nb2O5 layer thickness was studied and it was found to strongly influence the J-V hysteresis of the cells. Devices constructed with 50 nm Nb2O5 have small or undetectable hysteresis, which becomes detectable and increases with increasing Nb2O5 layer thickness. For the best device, energy conversion efficiency of up to 12%, short-circuit currents of 17 mA/cm2 and fill factors of 74% were found. These parameters are comparable to the best performance of similar devices where the compact layer is TiO2. In addition, the use of Nb2O5 improved the stability of the solar cells under illumination. These improvements are attributed to a better extraction of photogenerated electrons in the perovskite layer.
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spelling Nb2O5 hole blocking layer for hysteresis-free perovskite solar cellsHysteresisMethyl ammonium lead iodideNiobium pentoxidePerovskite solar cellsStabilityPerovskite solar cells have attracted attention due its high conversion efficiency and low cost. In this work, Nb2O5 is used as an alternative compact hole blocking layer in conjunction with mesoporous TiO2 and CH3NH3PbI3 in perovskite solar cells. The influence of Nb2O5 layer thickness was studied and it was found to strongly influence the J-V hysteresis of the cells. Devices constructed with 50 nm Nb2O5 have small or undetectable hysteresis, which becomes detectable and increases with increasing Nb2O5 layer thickness. For the best device, energy conversion efficiency of up to 12%, short-circuit currents of 17 mA/cm2 and fill factors of 74% were found. These parameters are comparable to the best performance of similar devices where the compact layer is TiO2. In addition, the use of Nb2O5 improved the stability of the solar cells under illumination. These improvements are attributed to a better extraction of photogenerated electrons in the perovskite layer.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)UNESP – Chemistry Institute Biochemistry and Chemistry DepartmentLaboratory for Functional Polymers Swiss Federal Laboratories for Materials Science and Technology (Empa)UNESP – University of São Paulo State Physics DepartmentPOSMAT – Programa de Pós Graduação em Ciência e Tecnologia dos MateriaisUNESP – Chemistry Institute Biochemistry and Chemistry DepartmentUNESP – University of São Paulo State Physics DepartmentFAPESP: 2012/07745-9FAPESP: 2014/23336-7FAPESP: CEPID/CDMF 2013/07296-2Universidade Estadual Paulista (Unesp)Swiss Federal Laboratories for Materials Science and Technology (Empa)POSMAT – Programa de Pós Graduação em Ciência e Tecnologia dos MateriaisFernandes, Silvia L. [UNESP]Véron, Anna C.Neto, Nilton F.A. [UNESP]Nüesch, Frank A.Dias da Silva, José H. [UNESP]Zaghete, Maria A. [UNESP]Graeff, Carlos F. de O. [UNESP]2018-12-11T17:06:39Z2018-12-11T17:06:39Z2016-10-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article103-107application/pdfhttp://dx.doi.org/10.1016/j.matlet.2016.06.018Materials Letters, v. 181, p. 103-107.1873-49790167-577Xhttp://hdl.handle.net/11449/17359110.1016/j.matlet.2016.06.0182-s2.0-849910175632-s2.0-84991017563.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Lettersinfo:eu-repo/semantics/openAccess2023-12-20T06:21:53Zoai:repositorio.unesp.br:11449/173591Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:49:17.990812Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells
title Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells
spellingShingle Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells
Fernandes, Silvia L. [UNESP]
Hysteresis
Methyl ammonium lead iodide
Niobium pentoxide
Perovskite solar cells
Stability
title_short Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells
title_full Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells
title_fullStr Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells
title_full_unstemmed Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells
title_sort Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells
author Fernandes, Silvia L. [UNESP]
author_facet Fernandes, Silvia L. [UNESP]
Véron, Anna C.
Neto, Nilton F.A. [UNESP]
Nüesch, Frank A.
Dias da Silva, José H. [UNESP]
Zaghete, Maria A. [UNESP]
Graeff, Carlos F. de O. [UNESP]
author_role author
author2 Véron, Anna C.
Neto, Nilton F.A. [UNESP]
Nüesch, Frank A.
Dias da Silva, José H. [UNESP]
Zaghete, Maria A. [UNESP]
Graeff, Carlos F. de O. [UNESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Swiss Federal Laboratories for Materials Science and Technology (Empa)
POSMAT – Programa de Pós Graduação em Ciência e Tecnologia dos Materiais
dc.contributor.author.fl_str_mv Fernandes, Silvia L. [UNESP]
Véron, Anna C.
Neto, Nilton F.A. [UNESP]
Nüesch, Frank A.
Dias da Silva, José H. [UNESP]
Zaghete, Maria A. [UNESP]
Graeff, Carlos F. de O. [UNESP]
dc.subject.por.fl_str_mv Hysteresis
Methyl ammonium lead iodide
Niobium pentoxide
Perovskite solar cells
Stability
topic Hysteresis
Methyl ammonium lead iodide
Niobium pentoxide
Perovskite solar cells
Stability
description Perovskite solar cells have attracted attention due its high conversion efficiency and low cost. In this work, Nb2O5 is used as an alternative compact hole blocking layer in conjunction with mesoporous TiO2 and CH3NH3PbI3 in perovskite solar cells. The influence of Nb2O5 layer thickness was studied and it was found to strongly influence the J-V hysteresis of the cells. Devices constructed with 50 nm Nb2O5 have small or undetectable hysteresis, which becomes detectable and increases with increasing Nb2O5 layer thickness. For the best device, energy conversion efficiency of up to 12%, short-circuit currents of 17 mA/cm2 and fill factors of 74% were found. These parameters are comparable to the best performance of similar devices where the compact layer is TiO2. In addition, the use of Nb2O5 improved the stability of the solar cells under illumination. These improvements are attributed to a better extraction of photogenerated electrons in the perovskite layer.
publishDate 2016
dc.date.none.fl_str_mv 2016-10-15
2018-12-11T17:06:39Z
2018-12-11T17:06:39Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.matlet.2016.06.018
Materials Letters, v. 181, p. 103-107.
1873-4979
0167-577X
http://hdl.handle.net/11449/173591
10.1016/j.matlet.2016.06.018
2-s2.0-84991017563
2-s2.0-84991017563.pdf
url http://dx.doi.org/10.1016/j.matlet.2016.06.018
http://hdl.handle.net/11449/173591
identifier_str_mv Materials Letters, v. 181, p. 103-107.
1873-4979
0167-577X
10.1016/j.matlet.2016.06.018
2-s2.0-84991017563
2-s2.0-84991017563.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Letters
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 103-107
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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