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dc.contributor.authorBaranowski, M
dc.contributor.authorZelewski, SJ
dc.contributor.authorKepenekian, M
dc.contributor.authorTraoré, B
dc.contributor.authorUrban, JM
dc.contributor.authorSurrente, A
dc.contributor.authorGalkowski, K
dc.contributor.authorMaude, DK
dc.contributor.authorKuc, A
dc.contributor.authorBooker, EP
dc.contributor.authorKudrawiec, R
dc.contributor.authorStranks, Samuel
dc.contributor.authorPlochocka, P
dc.date.accessioned2019-09-13T11:59:15Z
dc.date.available2019-09-13T11:59:15Z
dc.date.issued2019-10
dc.identifier.issn2380-8195
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/296819
dc.description.abstractThere is a variety of possible ways to tune the optical properties of 2D perovskites, though the mutual dependence between different tuning parameters hinders our fundamental understanding of their properties. In this work we attempt to address this issue for (C$_n$H$_{2n+1}$NH$_3$)$_2$PbI$_4$ (with n=4,6,8,10,12) using optical spectroscopy in high magnetic fields up to 67T. Our experimental results, supported by DFT calculations, clearly demonstrate that the exciton reduced mass increases by around 30% in the low temperature phase. This is reflected by a 2-3 fold decrease of the diamagnetic coefficient. Our studies show that the effective mass, which is an essential parameter for optoelectronic device operation, can be tuned by the variation of organic spacers and/or moderate cooling achievable using Peltier coolers. Moreover, we show that the complex absorption features visible in absorption/transmission spectra track each other in magnetic field providing strong evidence for the phonon related nature of the observed side bands.
dc.description.sponsorshipS.D.S acknowledges the Royal Society and Tata Group (UF150033). The work was supported by a Royal Society International Exchanges Cost Share award (IEC\R2\170108). The authors thank EPSRC for funding through grant EP/M05143/1
dc.publisherAmerican Chemical Society (ACS)
dc.rightsAll rights reserved
dc.titlePhase-Transition-Induced Carrier Mass Enhancement in 2D Ruddlesden-Popper Perovskites
dc.typeArticle
prism.endingPage2392
prism.issueIdentifier10
prism.publicationDate2019
prism.publicationNameACS Energy Letters
prism.startingPage2386
prism.volume4
dc.identifier.doi10.17863/CAM.43863
dcterms.dateAccepted2019-09-04
rioxxterms.versionofrecord10.1021/acsenergylett.9b01435
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-07-04
dc.contributor.orcidBaranowski, M [0000-0002-5974-0850]
dc.contributor.orcidZelewski, SJ [0000-0002-6037-3701]
dc.contributor.orcidKepenekian, M [0000-0001-5192-5896]
dc.contributor.orcidTraoré, B [0000-0003-0568-4141]
dc.contributor.orcidSurrente, A [0000-0003-4078-4965]
dc.contributor.orcidGalkowski, K [0000-0002-9275-1519]
dc.contributor.orcidKuc, A [0000-0002-9458-4136]
dc.contributor.orcidKudrawiec, R [0000-0003-2593-9172]
dc.contributor.orcidStranks, Samuel [0000-0002-8303-7292]
dc.contributor.orcidPlochocka, P [0000-0002-4019-6138]
dc.identifier.eissn2380-8195
dc.publisher.urlhttp://dx.doi.org/10.1021/acsenergylett.9b01435
rioxxterms.typeJournal Article/Review
pubs.funder-project-idRoyal Society (UF150033)
pubs.funder-project-idRoyal Society (IEC\R2\170108)
cam.issuedOnline2019-09-04
cam.orpheus.successThu Jan 30 10:39:10 GMT 2020 - Embargo updated
rioxxterms.freetoread.startdate2020-07-04


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