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dc.contributor.authorAlsari, Men
dc.contributor.authorBikondoa, Oen
dc.contributor.authorBishop, Jen
dc.contributor.authorAbdi-Jalebi, Men
dc.contributor.authorOzer, LYen
dc.contributor.authorHampton, Men
dc.contributor.authorThompson, Pen
dc.contributor.authorHörantner, MTen
dc.contributor.authorMahesh, Sen
dc.contributor.authorGreenland, Cen
dc.contributor.authorMacdonald, JEen
dc.contributor.authorPalmisano, Gen
dc.contributor.authorSnaith, HJen
dc.contributor.authorLidzey, DGen
dc.contributor.authorStranks, Samuelen
dc.contributor.authorFriend, Richarden
dc.contributor.authorLilliu, Sen
dc.date.accessioned2018-03-09T12:49:10Z
dc.date.available2018-03-09T12:49:10Z
dc.date.issued2018-02-01en
dc.identifier.issn1754-5692
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/273875
dc.description.abstractMetal-halide perovskites show remarkably clean semiconductor behaviour, as evidenced by their excellent solar cell performance, in spite of the presence of many structural and chemical defects. Here, we show how this clean semiconductor performance sets in during the earliest phase of conversion from the metal salts and organic-based precursors and solvent, using simultaneous in-situ synchrotron X-ray and in-operando current-voltage measurements on films prepared on interdigitated back-contact substrates. These structures function as working solar cells as soon as sufficient semiconductor material is present across the electrodes. We find that at the first stages of conversion from the precursor phase, at the percolation threshold for bulk conductance, high photovoltages are observed, even though the bulk of the material is still present as precursors. This indicates that at the earliest stages of perovskite structure formation, the semiconductor gap is already well-defined and free of sub-gap trap states. The short circuit current, in contrast, continues to grow until the perovskite phase is fully formed, when there are bulk pathways for charge diffusion and collection. This work reveals important relationships between the precursors conversion and device performance and highlights the remarkable defect tolerance of perovskite materials.
dc.publisherRoyal Society of Chemistry
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleIn situ simultaneous photovoltaic and structural evolution of perovskite solar cells during film formationen
dc.typeArticle
prism.endingPage393
prism.issueIdentifier2en
prism.publicationDate2018en
prism.publicationNameEnergy and Environmental Scienceen
prism.startingPage383
prism.volume11en
dc.identifier.doi10.17863/CAM.20951
dcterms.dateAccepted2017-12-18en
rioxxterms.versionofrecord10.1039/c7ee03013den
rioxxterms.versionVoR*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-02-01en
dc.contributor.orcidStranks, Samuel [0000-0002-8303-7292]
dc.contributor.orcidFriend, Richard [0000-0001-6565-6308]
dc.identifier.eissn1754-5706
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEuropean Commission (622630)
pubs.funder-project-idUNIVERSITY OF LIVERPOOL (FB EPSRC) (EP/L01551X/1)


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International