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dc.contributor.author | Ravirajan, P. | es_ES |
dc.contributor.author | Atienzar Corvillo, Pedro Enrique | es_ES |
dc.contributor.author | Nelson, J. | es_ES |
dc.date.accessioned | 2014-11-14T09:31:45Z | |
dc.date.issued | 2012-10 | |
dc.identifier.issn | 1555-130X | |
dc.identifier.uri | http://hdl.handle.net/10251/44168 | |
dc.description.abstract | We report on a study of post-processing treatments in hybrid solar cells based on poly(3-hexylthiophene) (P3HT) being in contact with nanocrystalline TiO2 films. The power conversion efficiency of the hybrid polymer/TiO2 solar cells is increased over three-fold through the simultaneous application of external bias voltage and UV illumination. These treatments enhance short-circuit current density, J(SC), from 1 mA/cm(2) to over 3 mA/cm(2) under simulated air mass (AM) 1.5 conditions (100 mW cm(-2)) and lead to a peak external quantum efficiency of over 16%. The AM 1.5 open circuit voltage reaches 0.47 V and the fill factor reaches 0.53, resulting in an overall power conversion efficiency of 0.74%. The improved performance following UV exposure is correlated to a slowing of over one order of magnitude in the dynamics of charge recombination as monitored by transient optical spectroscopy. We further demonstrate that while the UV radiation present in a simulated AM 1.5 solar spectrum is sufficient to cause the increase in the J(SC) and efficiency after two hours of exposure, no change results from exposure to the same spectrum when a UV blocking filter is used. We propose that UV exposure modifies the nature or density of surface trapping species in the nanocrystalline TiO2, resulting in reduced recombination rates and a higher efficiency of collection of photogenerated charges. | es_ES |
dc.description.sponsorship | The authors thank Prof. James Durrant, Department of Chemistry, Imperial College London, for permitting them to take transient absorption spectroscopic measurements in his laboratory. PR and JN thank the Royal Society for financial support of PR's academic visit to Imperial College London. We also thank the EPSRC Excitonic Supergen Programme (EP/G031088) and the EPSRC Materials for Energy Programme (EP/E036341/1) for financial support. PA acknowledges the support of the Spanish Ministry of Science for a post-doctoral fellowship. | en_EN |
dc.language | Inglés | es_ES |
dc.publisher | American Scientific Publishers | es_ES |
dc.relation.ispartof | Journal of Nanoelectronics and Optoelectronics | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Solar Cells | es_ES |
dc.subject | Post Processing | es_ES |
dc.subject | Polymer | es_ES |
dc.subject | TiO2 | es_ES |
dc.subject | Illumination | es_ES |
dc.subject | Photovoltaics | es_ES |
dc.subject.classification | QUIMICA ANALITICA | es_ES |
dc.title | Post-Processing Treatments in Hybrid Polymer/Titanium Dioxide Multilayer Solar Cells | es_ES |
dc.type | Artículo | es_ES |
dc.embargo.lift | 10000-01-01 | |
dc.embargo.terms | forever | es_ES |
dc.identifier.doi | 10.1166/jno.2012.1379 | |
dc.relation.projectID | info:eu-repo/grantAgreement/UKRI//EP%2FE036341%2F1/GB/High-efficiency Hybrid Solar Cells for Micro-generation/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/UKRI//EP%2FG031088%2F1/GB/SUPERGEN Excitonic Solar Cell Consortium - MAIN CORE/ | es_ES |
dc.rights.accessRights | Cerrado | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Química - Departament de Química | es_ES |
dc.description.bibliographicCitation | Ravirajan, P.; Atienzar Corvillo, PE.; Nelson, J. (2012). Post-Processing Treatments in Hybrid Polymer/Titanium Dioxide Multilayer Solar Cells. Journal of Nanoelectronics and Optoelectronics. 7(5):498-502. doi:10.1166/jno.2012.1379 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1166/jno.2012.1379 | es_ES |
dc.description.upvformatpinicio | 498 | es_ES |
dc.description.upvformatpfin | 502 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 7 | es_ES |
dc.description.issue | 5 | es_ES |
dc.relation.senia | 241468 | |
dc.contributor.funder | Ministerio de Ciencia e Innovación | |
dc.contributor.funder | UK Research and Innovation | es_ES |