Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells

Página do item simplificado
dc.contributor.authorFernandes, Silvia L. [UNESP]
dc.contributor.authorVéron, Anna C.
dc.contributor.authorNeto, Nilton F.A. [UNESP]
dc.contributor.authorNüesch, Frank A.
dc.contributor.authorDias da Silva, José H. [UNESP]
dc.contributor.authorZaghete, Maria A. [UNESP]
dc.contributor.authorGraeff, Carlos F. de O. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionSwiss Federal Laboratories for Materials Science and Technology (Empa)
dc.contributor.institutionPOSMAT – Programa de Pós Graduação em Ciência e Tecnologia dos Materiais
dc.date.accessioned2018-12-11T17:06:39Z
dc.date.available2018-12-11T17:06:39Z
dc.date.issued2016-10-15
dc.description.abstractPerovskite 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.en
dc.description.affiliationUNESP – Chemistry Institute Biochemistry and Chemistry Department
dc.description.affiliationLaboratory for Functional Polymers Swiss Federal Laboratories for Materials Science and Technology (Empa)
dc.description.affiliationUNESP – University of São Paulo State Physics Department
dc.description.affiliationPOSMAT – Programa de Pós Graduação em Ciência e Tecnologia dos Materiais
dc.description.affiliationUnespUNESP – Chemistry Institute Biochemistry and Chemistry Department
dc.description.affiliationUnespUNESP – University of São Paulo State Physics Department
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2012/07745-9
dc.description.sponsorshipIdFAPESP: 2014/23336-7
dc.description.sponsorshipIdFAPESP: CEPID/CDMF 2013/07296-2
dc.format.extent103-107
dc.identifierhttp://dx.doi.org/10.1016/j.matlet.2016.06.018
dc.identifier.citationMaterials Letters, v. 181, p. 103-107.
dc.identifier.doi10.1016/j.matlet.2016.06.018
dc.identifier.file2-s2.0-84991017563.pdf
dc.identifier.issn1873-4979
dc.identifier.issn0167-577X
dc.identifier.scopus2-s2.0-84991017563
dc.identifier.urihttp://hdl.handle.net/11449/173591
dc.language.isoeng
dc.relation.ispartofMaterials Letters
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectHysteresis
dc.subjectMethyl ammonium lead iodide
dc.subjectNiobium pentoxide
dc.subjectPerovskite solar cells
dc.subjectStability
dc.titleNb2O5 hole blocking layer for hysteresis-free perovskite solar cellsen
dc.typeArtigo
unesp.author.lattes5268607684223281[7]
unesp.author.orcid0000-0003-0162-8273[7]

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
2-s2.0-84991017563.pdf
Tamanho:
2.01 MB
Formato:
Adobe Portable Document Format
Descrição:
Baixar

Coleções

Artigos - Bioquímica e Tecnologia - IQ