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dc.contributor.authorPazos-Outón, Luis Men
dc.contributor.authorSzumilo, Monikaen
dc.contributor.authorLambo, Robinen
dc.contributor.authorRichter, Johannesen
dc.contributor.authorCrespo-Quesada, Micaelaen
dc.contributor.authorAbdi-Jalebi, Mojtabaen
dc.contributor.authorBeeson, Harry Jen
dc.contributor.authorVrucinic, Milanen
dc.contributor.authorAlsari, Mejden
dc.contributor.authorSnaith, Henry Jen
dc.contributor.authorEhrler, Brunoen
dc.contributor.authorFriend, Richarden
dc.contributor.authorDeschler, Felixen
dc.date.accessioned2016-02-10T12:15:57Z
dc.date.available2016-02-10T12:15:57Z
dc.date.issued2016-03-25en
dc.identifier.citationPazos-Outón et al. Science (2016) Vol. 351, Issue 6280, pp. 1430-1433 doi: 10.1126/science.aaf1168en
dc.identifier.issn0036-8075
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/253689
dc.description.abstractLead-halide perovskites have emerged as high-performance photovoltaic materials. We mapped the propagation of photogenerated luminescence and charges from a local photoexcitation spot in thin films of lead tri-iodide perovskites We observed light emission at distances of ≥50 micrometers and found that the peak of the internal photon spectrum red-shifts from 765 to ≥800 nanometers. Using a lateral-contact solar cell with selective electron-and hole-collecting contacts, charge extraction for photoexcitation >50 micrometers away from the contacts was observed that arose from repeated recycling between photons and electron-hole pairs. Thus, energy transport is not limited by diffusive charge transport but can occur over long distances through multiple absorption-diffusion-emission events. This process creates high excitation densities within the perovskite layer, and allows high open circuit voltages.
dc.description.sponsorshipThe authors acknowledge financial support from the Engineering and Physical Sciences Research Council of the UK (EPSRC) and King Abdulaziz City for Science and Technology (KACST). L.M.P.O. and H.J.B. also thank the Nano doctoral training center (NanoDTC) for financial support. M.S., M.V. and J.M.R. thank the Winton programme for the physics of sustainability. M.C.Q would like to thank the Marie Curie Actions (FP7-PEOPLE-IEF2013) for funding. M.A.J. thanks Nyak Technology Ltd for PhD scholarship and B.E. acknowledges the Foundation for Fundamental Research on Matter (FOM), which is part of the Netherlands Organization for Scientific Research (NWO). F.D. acknowledges funding through a Herchel Smith Research Fellowship. We acknowledge Prof. Henning Sirringhaus, Prof. Neil Greenham, Prof. Ullrich Steiner, Dr. Erwin Reisner and Prof. Richard Phillips for providing support and access to their facilities.
dc.languageEnglishen
dc.language.isoenen
dc.publisherAmerican Association for the Advancement of Science
dc.relation.ispartofhttps://www.repository.cam.ac.uk/handle/1810/254536
dc.subjectphoton recyclingen
dc.subjectlead-halide perovskitesen
dc.subjectlong-range energy transferen
dc.subjectback-contact solar cellen
dc.titlePhoton recycling in lead-iodide perovskite solar cellsen
dc.typeArticle
dc.description.versionThis is the author accepted manuscript. The final version is available from the American Association for the Advancement of Science via http://dx.doi.org/10.1126/science.aaf1168en
prism.endingPage1433
prism.publicationDate2016en
prism.publicationNameScienceen
prism.startingPage1430
prism.volume351en
dc.rioxxterms.funderEPSRC
dcterms.dateAccepted2016-02-02en
rioxxterms.versionofrecord10.1126/science.aaf1168en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2016-03-25en
dc.contributor.orcidFriend, Richard [0000-0001-6565-6308]
dc.contributor.orcidDeschler, Felix [0000-0002-0771-3324]
dc.identifier.eissn1095-9203
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/M005143/1)
pubs.funder-project-idEPSRC (1353070)
rioxxterms.freetoread.startdate2016-09-25


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