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Monitoring degradation mechanisms in PTB7:PC71BM photovoltaic cells by means of impedance spectroscopy
dc.contributor.author | Arredondo, Belen |
dc.contributor.author | Martin Lopez, Maria B. |
dc.contributor.author | Romero, Beatriz |
dc.contributor.author | Vergaz, Ricardo |
dc.contributor.author | Romero Gómez, Pablo |
dc.contributor.author | Martorell Pena, Jordi |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.date.accessioned | 2017-10-11T14:06:16Z |
dc.date.available | 2017-10-24T00:30:42Z |
dc.date.issued | 2015-10-23 |
dc.identifier.citation | Arredondo, B., Martin, M., Romero, B., Vergaz, R., Romero, P., Martorell, J. Monitoring degradation mechanisms in PTB7:PC71BM photovoltaic cells by means of impedance spectroscopy. "Solar energy materials and solar cells", 23 Octubre 2015, vol. 144, p. 422-428. |
dc.identifier.issn | 0927-0248 |
dc.identifier.uri | http://hdl.handle.net/2117/108658 |
dc.description | © 2016. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
dc.description.abstract | We have used impedance spectroscopy technique to monitor degradation mechanisms in organic solar cells based on a blend of PTB7:PC71BM. We have measured the impedance of the cell on a periodical basis for almost four months, and experimental data have been modeled using three different circuits. The evolution of the circuital parameters gives information about the device dynamical mechanisms. We have observed at high voltages a low frequency feature that is more pronounced along days of measurement. This low frequency arc has been associated to charge accumulation that is related to a worsening of charge extraction through the contacts. The simultaneous increase of recombination and low frequency resistances at high voltages (around V-oc) results in a decrease of the fill factor and therefore of the efficiency. |
dc.format.extent | 7 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Energies::Energia solar fotovoltaica |
dc.subject.lcsh | Impedance spectroscopy |
dc.subject.lcsh | Solar cells |
dc.subject.lcsh | Photovoltaic power generation |
dc.subject.other | Organic solar cells |
dc.subject.other | Impedance spectroscopy |
dc.subject.other | Monitoring degradation |
dc.subject.other | Contact selectivity |
dc.subject.other | Polymer |
dc.subject.other | Stability |
dc.subject.other | Layer |
dc.subject.other | Standard |
dc.subject.other | Lifetime |
dc.subject.other | Oxide |
dc.subject.other | Thin |
dc.title | Monitoring degradation mechanisms in PTB7:PC71BM photovoltaic cells by means of impedance spectroscopy |
dc.type | Article |
dc.subject.lemac | Espectroscòpia d'impedància |
dc.subject.lemac | Cèl·lules solars |
dc.subject.lemac | Energia solar fotovoltaica |
dc.contributor.group | Universitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers |
dc.identifier.doi | 10.1016/j.solmat.2015.09.050 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0927024815004833 |
dc.rights.access | Open Access |
local.identifier.drac | 17526480 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Arredondo, B.; Martin, M.; Romero, B.; Vergaz, R.; Romero, P.; Martorell, J. |
local.citation.publicationName | Solar energy materials and solar cells |
local.citation.volume | 144 |
local.citation.startingPage | 422 |
local.citation.endingPage | 428 |
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