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Electrochemical Fabrication and Characterization of p-CuSCN/n-Fe2O3 Heterojunction Devices for Hydrogen Production

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Electrochemical Fabrication and Characterization of p-CuSCN/n-Fe2O3 Heterojunction Devices for Hydrogen Production

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dc.contributor.author Bouhjar, Feriel es_ES
dc.contributor.author Ullah, Shafi es_ES
dc.contributor.author Mollar García, Miguel Alfonso es_ES
dc.contributor.author Marí, B. es_ES
dc.contributor.author Bessais, Brahim es_ES
dc.date.accessioned 2018-05-14T04:24:32Z
dc.date.available 2018-05-14T04:24:32Z
dc.date.issued 2017 es_ES
dc.identifier.issn 0013-4651 es_ES
dc.identifier.uri http://hdl.handle.net/10251/101909
dc.description.abstract [EN] p-CuSCN/n-Fe2O3 heterojunctions were electrochemically prepared by sequentially depositing alpha-Fe2O3 and CuSCN films on FTO (SnO2:F) substrates. Both alpha-Fe2O3 and CuSCN films and alpha-Fe2O3/CuSCN heterojunctions were characterized by field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD). Pure crystalline CuSCN films were electrochemically deposited on alpha-Fe2O3 films by fixing the SCN/Cu molar ratio in an electrolytic bath to 1:1.5 at 60 degrees C, and at a potential of -0.4 V. The photocurrent measurements showed increased intrinsic surface states or defects at the alpha-Fe2O3/CuSCN interface. The photoelectrochemical performance of the alpha-Fe2O3/CuSCN heterojunction was examined by chronoamperometry and linear sweep voltammetry techniques. The alpha-Fe2O3/CuSCN structure exhibited greater photoelectrochemical activity compared to the alpha-Fe2O3 thin films. The highest photocurrent density was obtained for the alpha-Fe2O3/CuSCN films in 1 M NaOH electrolyte. This strong photoactivity was attributed to both the large active surface area and the external applied bias, which favored the transfer and separation of the photogenerated charge carriers in the alpha-Fe2O3/CuSCN heterojunction devices. The flatband potential and donor density were maximal for the heterojunction. These results suggest a substantial potential to achieve heterojunction thin films in photoelectrochemical water splitting applications. (c) 2017 The Electrochemical Society. All rights reserved. es_ES
dc.description.sponsorship This work was supported by the Ministry of High Education and Scientific Research (Tunisia), Ministerio de Economia y Competitividad (ENE2016-77798-C4-2-R) and Generalitat Valenciana (Prometeus 2014/044).
dc.language Inglés es_ES
dc.publisher The Electrochemical Society es_ES
dc.relation.ispartof Journal of The Electrochemical Society es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Fe2O3 es_ES
dc.subject CuSCN es_ES
dc.subject Electrochemical deposition es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Electrochemical Fabrication and Characterization of p-CuSCN/n-Fe2O3 Heterojunction Devices for Hydrogen Production es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1149/2.1431713jes es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//ENE2016-77798-C4-2-R/ES/APROVECHAMIENTO DE LA LUZ SOLAR CON PROCESOS DE DOS FOTONES-TF/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//PROMETEOII%2F2014%2F044/ES/Técnicas de Fabricación Avanzada y Control de Calidad de nuevos materiales multifuncionales en movilidad sostenible/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Bouhjar, F.; Ullah, S.; Mollar García, MA.; Marí, B.; Bessais, B. (2017). Electrochemical Fabrication and Characterization of p-CuSCN/n-Fe2O3 Heterojunction Devices for Hydrogen Production. Journal of The Electrochemical Society. 164(13):936-945. https://doi.org/10.1149/2.1431713jes es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1149/2.1431713jes es_ES
dc.description.upvformatpinicio 936 es_ES
dc.description.upvformatpfin 945 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 164 es_ES
dc.description.issue 13 es_ES
dc.relation.pasarela S\345264 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES


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