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dc.contributor.authorBou, Agustín
dc.contributor.authorA Boliņš, Haralds
dc.contributor.authorAshoka, Arjun
dc.contributor.authorCruanyes, Héctor
dc.contributor.authorGuerrero, Antonio
dc.contributor.authorDeschler, Felix
dc.contributor.authorBisquert, Juan
dc.date.accessioned2022-01-07T16:47:48Z
dc.date.available2022-01-07T16:47:48Z
dc.date.issued2021-06-11
dc.identifier.issn2380-8195
dc.identifier.otherPMC8576830
dc.identifier.other34778561
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/332340
dc.description.abstractFrequency resolved methods are widely used to determine device properties of perovskite solar cells. However, obtaining the electronic parameters for diffusion and recombination by impedance spectroscopy has been so far elusive, since the measured spectra do not present the diffusion of electrons. Here we show that intensity modulated photocurrent spectroscopy (IMPS) displays a high frequency spiraling feature determined by the diffusion-recombination constants, under conditions of generation of carriers far from the collecting contact. We present models and experiments in two different configurations: the standard sandwich-contacts solar cell device and the quasi-interdigitated back-contact (QIBC) device for lateral long-range diffusion. The results of the measurements produce the hole diffusion coefficient of D p = 0.029 cm2/s and lifetime of τ p = 16 μs for one cell and D p = 0.76 cm2/s and τ p = 1.6 μs for the other. The analysis in the frequency domain is effective to separate the carrier diffusion (at high frequency) from the ionic contact phenomena at a low frequency. This result opens the way for a systematic determination of transport and recombination features in a variety of operando conditions.
dc.languageeng
dc.publisherAmerican Chemical Society (ACS)
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceessn: 2380-8195
dc.sourcenlmid: 101697523
dc.titleExtracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated Techniques.
dc.typeArticle
dc.date.updated2022-01-07T16:47:47Z
prism.endingPage2255
prism.issueIdentifier6
prism.publicationNameACS Energy Lett
prism.startingPage2248
prism.volume6
dc.identifier.doi10.17863/CAM.79786
dcterms.dateAccepted2021-05-20
rioxxterms.versionofrecord10.1021/acsenergylett.1c00871
rioxxterms.versionVoR
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidBou, Agustín [0000-0002-7535-5063]
dc.contributor.orcidGuerrero, Antonio [0000-0001-8602-1248]
dc.contributor.orcidDeschler, Felix [0000-0002-0771-3324]
dc.contributor.orcidBisquert, Juan [0000-0003-4987-4887]
dc.identifier.eissn2380-8195
pubs.funder-project-idMinisterio de Ciencia e Innovaci??n (PID2019-107348GB-100)
pubs.funder-project-idEuropean Research Council (Grant No. 716471, 716471)
cam.issuedOnline2021-05-24


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