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dc.contributor.authorBowman, AR
dc.contributor.authorMacpherson, S
dc.contributor.authorAbfalterer, A
dc.contributor.authorFrohna, K
dc.contributor.authorNagane, S
dc.contributor.authorStranks, SD
dc.date.accessioned2022-04-19T23:31:20Z
dc.date.available2022-04-19T23:31:20Z
dc.date.issued2022
dc.identifier.issn2331-7019
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/336246
dc.description.abstractRecombination rates in optoelectronic semiconductors are typically recorded using time-intensive and expensive measurements. Here we present a method to extract decay rate ratios in a facile and rapid manner using only photoluminescence quantum efficiency measurements, which we demonstrate on halide perovskite thin-film samples. We combine these ratios with time-resolved photoluminescence data to extract absolute recombination rates, with excellent agreement when our approach is benchmarked against the more time- and infrastructure-intensive technique of transient absorption spectroscopy. This approach also enables direct quantification of the ratio between total second-order and radiative second-order recombination rates. We demonstrate that radiative recombination is only a fraction of total second-order recombination in the range of halide perovskite samples relevant for photovoltaics. We showcase the implications of rapid extraction of decay rates by extracting decay rate ratios on a microscale and by calculating the expected maximum efficiency of a solar cell fabricated from a measured perovskite film. We show that reducing first-order losses will significantly improve solar cell efficiency for our samples until time-resolved photoluminescence lifetimes are longer than approximately 1 µs (at low excitation pulse intensity), at which point second-order nonradiative recombination limits the efficiency of perovskite solar cells. This work presents a framework for rapidly screening optoelectronic semiconductors with techniques widely accessible to many research groups, identifies decay processes that would otherwise be missed, and directly relates the extracted values to predicted device performance metrics.
dc.publisherAmerican Physical Society (APS)
dc.rightsAll Rights Reserved
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserved
dc.titleExtracting Decay-Rate Ratios from Photoluminescence Quantum Efficiency Measurements in Optoelectronic Semiconductors
dc.typeArticle
dc.publisher.departmentDepartment of Physics
dc.publisher.departmentDepartment of Physics Student
dc.publisher.departmentDepartment of Chemical Engineering And Biotechnology
dc.date.updated2022-04-19T13:46:53Z
prism.issueIdentifier4
prism.number044026
prism.publicationNamePhysical Review Applied
prism.volume17
dc.identifier.doi10.17863/CAM.83665
dcterms.dateAccepted2022-01-25
rioxxterms.versionofrecord10.1103/PhysRevApplied.17.044026
rioxxterms.versionAM
dc.contributor.orcidMacPherson, Stuart [0000-0003-3758-1198]
dc.contributor.orcidFrohna, Kyle [0000-0002-2259-6154]
dc.contributor.orcidNagane, Satyawan [0000-0002-1146-4754]
dc.contributor.orcidStranks, Samuel [0000-0002-8303-7292]
dc.identifier.eissn2331-7019
rioxxterms.typeJournal Article/Review
pubs.funder-project-idRoyal Society (UF150033)
pubs.funder-project-idEuropean Research Council (756962)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/R023980/1)
pubs.funder-project-idRoyal Society (NIF\R1\181365)
pubs.funder-project-idEPSRC (2127077)
pubs.funder-project-idEPSRC (EP/V012932/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/S030638/1)
pubs.funder-project-idEPSRC (EP/T02030X/1)
cam.issuedOnline2022-04-13
datacite.issupplementedby.urlhttps://doi.org/10.17863/CAM.81782
cam.orpheus.success2022-04-19 - Embargo set during processing via Fast-track
cam.depositDate2022-04-19
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
rioxxterms.freetoread.startdate2022-04-13


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