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dc.contributor.authorMohd Yusoff, ARB
dc.contributor.authorMahata, A
dc.contributor.authorVasilopoulou, M
dc.contributor.authorUllah, H
dc.contributor.authorHu, B
dc.contributor.authorJose da Silva, W
dc.contributor.authorKurt Schneider, F
dc.contributor.authorGao, P
dc.contributor.authorIevlev, AV
dc.contributor.authorLiu, Y
dc.contributor.authorOvchinnikova, OS
dc.contributor.authorDe Angelis, F
dc.contributor.authorKhaja Nazeeruddin, M
dc.date.accessioned2021-03-16T09:04:34Z
dc.date.issued2021-03-10
dc.description.abstractIndirect absorption extended below the direct transition edge and increase in carrier lifetime derived from Rashba spin-orbit coupling may advance the optoelectronic applications of metal halide perovskites. Spin-orbit coupling in halide perovskites is due to the presence of heavy elements in their structure. However, when these materials lack an inversion symmetry, for example by the application of strain, spin-orbit coupling becomes odd in the electron’s momentum giving rise to a splitting in the electronic energy bands. Here we report on the observation of a large Rashba splitting of 117 meV at room temperature through a facile compositional engineering approach in halide perovskite single crystals, as predicted by relativistic first-principles calculations. Partial substitution of organic cations by rubidium ions in single crystals induces significant indirect absorption and dual emission as a result of a large Rashba splitting. We measured significant magneto-photocurrent, magneto-electroluminescence and magneto-photoluminescence responses in perovskite single crystal devices and thin films. They originate from the significant spin-momentum locking that leads to different precession frequencies of their respective spins about the applied magnetic field. A hybrid perovskite single crystal photodetector achieved record figures of merit, including detectivity of more than 1.3×1018 Jones which represents a three orders of magnitude improvement compared to the to date record. These findings show that facile compositional engineering of perovskite single crystals holds great promise for further advancing the optoelectronic properties of existing materials.en_GB
dc.description.sponsorshipEuropean Regional Development Fund (ERDF)en_GB
dc.description.sponsorshipEuropean Union Horizon 2020en_GB
dc.description.sponsorshipMinistero dell’Istruzione dell’Universitàe della Ricerca (MIUR)en_GB
dc.description.sponsorshipUniversità degli Studi di Perugiaen_GB
dc.description.sponsorshipCNPq, Brazilen_GB
dc.identifier.citationPublished online 10 March 2021en_GB
dc.identifier.doi10.1016/j.mattod.2021.01.027
dc.identifier.grantnumber764047en_GB
dc.identifier.urihttp://hdl.handle.net/10871/125139
dc.language.isoenen_GB
dc.publisherElsevieren_GB
dc.rights.embargoreasonUnder embargo until 10 March 2022 in compliance with publisher policyen_GB
dc.rights © 2021. This version is made available under the CC-BY-NC-ND 4.0 license: https://creativecommons.org/licenses/by-nc-nd/4.0/ en_GB
dc.titleObservation of large Rashba spin–orbit coupling at room temperature in compositionally engineered perovskite single crystals and application in high performance photodetectorsen_GB
dc.typeArticleen_GB
dc.date.available2021-03-16T09:04:34Z
dc.identifier.issn1369-7021
dc.descriptionThis is the author accepted manuscript. The final version is available from Elsevier via the DOI in this recorden_GB
dc.identifier.journalMaterials Todayen_GB
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/ en_GB
dcterms.dateAccepted2021-01-24
rioxxterms.versionAMen_GB
rioxxterms.licenseref.startdate2021-03-10
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2021-03-15T16:08:52Z
refterms.versionFCDAM
refterms.panelBen_GB


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 © 2021. This version is made available under the CC-BY-NC-ND 4.0 license: https://creativecommons.org/licenses/by-nc-nd/4.0/ 
Except where otherwise noted, this item's licence is described as  © 2021. This version is made available under the CC-BY-NC-ND 4.0 license: https://creativecommons.org/licenses/by-nc-nd/4.0/