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dc.contributor.authorWei, Mengjie
dc.contributor.authorRuseckas, Arvydas
dc.contributor.authorMai, Van T. N.
dc.contributor.authorShukla, Atul
dc.contributor.authorAllison, Ilene
dc.contributor.authorLo, Shih-Chun
dc.contributor.authorNamdas, Ebinazar Benjamin
dc.contributor.authorTurnbull, Graham
dc.contributor.authorSamuel, Ifor D. W.
dc.date.accessioned2021-06-18T10:30:13Z
dc.date.available2021-06-18T10:30:13Z
dc.date.issued2021-08-13
dc.identifier.citationWei , M , Ruseckas , A , Mai , V T N , Shukla , A , Allison , I , Lo , S-C , Namdas , E B , Turnbull , G & Samuel , I D W 2021 , ' Low-threshold room temperature polariton lasing from fluorene-based oligomers ' , Laser & Photonics Reviews , vol. 15 , no. 8 , 2100028 . https://doi.org/10.1002/lpor.202100028en
dc.identifier.issn1863-8880
dc.identifier.otherPURE: 273967717
dc.identifier.otherPURE UUID: 91cf2989-bc6a-44db-8ffb-100d01372af6
dc.identifier.otherORCID: /0000-0001-9114-3522/work/95772479
dc.identifier.otherWOS: 000662733200001
dc.identifier.otherScopus: 85108364676
dc.identifier.urihttp://hdl.handle.net/10023/23387
dc.descriptionThe authors are grateful to the Australian Research Council (ARC DP160100700 and DP200103036), Australian Department of Industry, Innovation and Science (AISRF53765), the UK Engineering and Physical Sciences Research Council (Grants EP/M025330/1 and EP/L017008/1), China Scholarship Council and the Rank Prize Funds for financial support.en
dc.description.abstractOrganic semiconductors possessing tightly bound Frenkel excitons are known to be attractive candidates for demonstrating polariton lasing at room temperature. As polariton lasing can occur without inversion, it is a potential route to very low threshold coherent light sources. However, so far, the thresholds of organic polariton lasers have generally been much higher than those of organic photon lasers. Here this problem has been addressed by investigating two new organic molecules with a structure combining fluorene and carbazole groups. The materials are readily deposited from solution and exhibit high photoluminescence quantum yields, high absorption coefficients, and large radiative decay rates in neat films. Room temperature polariton lasing is realized in both materials with incident thresholds of 13.5 and 9.7 µJ cm−2, corresponding to absorbed thresholds of 3.3 and 2.2 µJ cm−2, respectively. These are the lowest values reported to date for polariton lasing in organic semiconductor materials, and approach typical values for organic photon lasers. The step-like power dependent blue-shift of polariton modes indicates an interplay between different depletion channels of the exciton reservoir. This work brings practical room temperature polaritonic devices and future realization of electrically driven polariton lasers a step closer.
dc.format.extent8
dc.language.isoeng
dc.relation.ispartofLaser & Photonics Reviewsen
dc.rightsCopyright © 2021 The Authors. Laser & Photonics Reviews published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.subjectExcitonsen
dc.subjectMicrocavitiesen
dc.subjectOrganic semiconductorsen
dc.subjectStrong light-matter couplingen
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.subjectDASen
dc.subject.lccQCen
dc.subject.lccTKen
dc.titleLow-threshold room temperature polariton lasing from fluorene-based oligomersen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Sir James Mackenzie Institute for Early Diagnosisen
dc.contributor.institutionUniversity of St Andrews.Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.identifier.doihttps://doi.org/10.1002/lpor.202100028
dc.description.statusPeer revieweden


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