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Electrodeposition of CuGaSe2 and CuGaS2 thin films for photovoltaic applications

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Electrodeposition of CuGaSe2 and CuGaS2 thin films for photovoltaic applications

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dc.contributor.author Ullah, Shafi es_ES
dc.contributor.author Mollar García, Miguel Alfonso es_ES
dc.contributor.author Marí, B. es_ES
dc.date.accessioned 2017-07-13T14:21:14Z
dc.date.available 2017-07-13T14:21:14Z
dc.date.issued 2016-08
dc.identifier.issn 1432-8488
dc.identifier.uri http://hdl.handle.net/10251/85107
dc.description The final publication is available at Springer via http://dx.doi.org/10.1007/s10008-016-3237-0. es_ES
dc.description.abstract Abstract CuGaSe2 and CuGaS2 polycrystalline thin film absorbers were prepared by one-step electrodeposition from an aqueous electrolyte containing CuCl2, GaCl3 and H2SeO3. The pH of the solution was adjusted to 2.3 by adding HCl and KOH. Annealing improved crystallinity of CuGaSe2 and further annealing in sulphur atmosphere was required to obtain CuGaS2 layers. The morphology, topography, chemical composition and crystal structure of the deposited thin films were analysed by scanning electron microscopy, atomic force microscopy, energy dispersive spectroscopy and X-ray diffraction, respectively. X-Ray diffraction showed that the asdeposited CuGaSe2 film exhibited poor crystallinity, but which improved dramatically when the layers were annealed in forming gas atmosphere for 40 min. Subsequent sulphurization of CuGaSe2 films was performed at 400 °C for 10 min in presence of molecular sulphur and under forming gas atmosphere. The effect of sulphurization was the conversion of CuGaSe2 into CuGaS2. The formation of CuGaS2 thin films was evidenced by the shift observed in the X-ray diffraction pattern and by the blue shift of the optical bandgap. The bandgap of CuGaSe2 was found to be 1.66 eV, while for CuGaS2 it raised up to 2.2 eV. A broad intermediate absorption band associated to Cr and centred at 1.63 eV was observed in Cr-doped CuGaS2 films. es_ES
dc.description.sponsorship This work was supported by Ministerio de Economia y Competitividad (ENE2013-46624-C4-4-R) and Generalitat Valenciana (Prometeus 2014/044). One of the authors (S. Ullah) acknowledges the European Union (IDEAS-Call-3, Innovation and Design for Euro-Asian scholars) for its financial support. en_EN
dc.language Inglés es_ES
dc.publisher Springer Verlag (Germany) es_ES
dc.relation.ispartof Journal of Solid State Electrochemistry es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Electrodeposition es_ES
dc.subject Thin films es_ES
dc.subject Chalcopyrite es_ES
dc.subject Annealing es_ES
dc.subject Selenization es_ES
dc.subject Sulphurization es_ES
dc.subject Intermediate band es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Electrodeposition of CuGaSe2 and CuGaS2 thin films for photovoltaic applications es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1007/s10008-016-3237-0
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//ENE2013-46624-C4-4-R/ES/MEJORA DE LA CONVERSION DE ENERGIA SOLAR MEDIANTE PROCESOS DE EXCITACION ELECTRONICA EN DOS ETAPAS. APROXIMACION ELECTROQUIMICA./ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/IDEAS/EACEA-204440/EU/Innovation and Design for Euro-Asian scholars/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//PROMETEO%2F2014%2F044/ 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 Ullah, S.; Mollar García, MA.; Marí, B. (2016). Electrodeposition of CuGaSe2 and CuGaS2 thin films for photovoltaic applications. Journal of Solid State Electrochemistry. 20(8):2251-2257. https://doi.org/10.1007/s10008-016-3237-0 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1007/s10008-016-3237-0 es_ES
dc.description.upvformatpinicio 2251 es_ES
dc.description.upvformatpfin 2257 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 20 es_ES
dc.description.issue 8 es_ES
dc.relation.senia 312531 es_ES
dc.identifier.eissn 1433-0768
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder European Commission
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