Insights into corrosion in dye solar cells

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorMiettunen, Kati
dc.contributor.authorEtula, Jarkko
dc.contributor.authorSaukkonen, Tapio
dc.contributor.authorJouttijärvi, Sami
dc.contributor.authorHalme, Janne
dc.contributor.authorRomu, Jyrki
dc.contributor.authorLund, Peter
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2016-09-03T09:01:19Z
dc.date.available2016-09-03T09:01:19Z
dc.date.issued2015
dc.description.abstractThe main issue in using low cost metals in dye solar cells is the corrosion caused by the liquid electrolyte. Contrary to typical applications of metals, the adverse effects of corrosion in dye solar cells are related to irreversible depletion of charge carriers from the electrolyte rather than consumption of the metal itself. It is calculated that the penetration rate due to corrosion should not exceed 10−4 mpy (a couple of nanometers per year) to ensure device lifetime longer than 1 year. This is 10 000 times slower rate than what is considered to be a general benchmark value for very low corrosion rate in the field of corrosion science and has a major effect on how corrosion should be investigated in the case of dye solar cells. Different methods, their applicability, and limitations to investigate corrosion in dye solar cells are evaluated here. The issue with most techniques is that they can detect metals that are clearly corroding, but they have significant limitations in proving a metal stable. Our investigation shows that the most reliable information on corrosion is obtained from complete dye solar cells that are exposed to working conditions. A combination of color analysis of the electrolyte to such measurement is proposed as a means to extrapolate future performance of the cells and estimate potential lifetimes of the dye solar cells in regards to corrosion.en
dc.description.versionPeer revieweden
dc.format.extent1045-1056
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMiettunen, Kati & Etula, Jarkko & Saukkonen, Tapio & Jouttijärvi, Sami & Halme, Janne & Romu, Jyrki & Lund, Peter. 2015. Insights into corrosion in dye solar cells. Progress in Photovoltaics: Research and Applications. Volume 23, Issue 8. 1045-1056. ISSN 1062-7995 (printed). DOI: 10.1002/pip.2534.en
dc.identifier.doi10.1002/pip.2534
dc.identifier.issn1062-7995 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/21828
dc.identifier.urnURN:NBN:fi:aalto-201602051253
dc.language.isoenen
dc.publisherWiley-Blackwellen
dc.relation.ispartofseriesProgress in Photovoltaics: Research and Applicationsen
dc.relation.ispartofseriesVolume 23, Issue 8
dc.rights© 2014 Wiley-Blackwell. This is the peer reviewed version of the following article: Miettunen, Kati & Etula, Jarkko & Saukkonen, Tapio & Jouttijärvi, Sami & Halme, Janne & Romu, Jyrki & Lund, Peter. 2015. Insights into corrosion in dye solar cells. Progress in Photovoltaics: Research and Applications. Volume 23, Issue 8. 1045-1056. ISSN 1062-7995 (printed). DOI: 10.1002/pip.2534., which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/pip.2534/full. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.en
dc.rights.holderWiley-Blackwell
dc.subject.keywordmetalen
dc.subject.keywordstabilityen
dc.subject.keywordredox coupleen
dc.subject.keywordcorrosionen
dc.subject.keyworddye-sensitizeden
dc.subject.otherPhysicsen
dc.titleInsights into corrosion in dye solar cellsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionPost printen
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