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dc.contributor.authorHeld, Martin
dc.contributor.authorGraf, Arko
dc.contributor.authorZakharko, Yuriy
dc.contributor.authorChao, Pengning
dc.contributor.authorTropf, Laura
dc.contributor.authorGather, Malte C.
dc.contributor.authorZaumseil, Jana
dc.identifier.citationHeld , M , Graf , A , Zakharko , Y , Chao , P , Tropf , L , Gather , M C & Zaumseil , J 2018 , ' Ultrastrong coupling of electrically pumped near-infrared exciton-polaritons in high mobility polymers ' , Advanced Optical Materials , vol. 6 , no. 3 , 1700962 .
dc.identifier.otherPURE: 251554961
dc.identifier.otherPURE UUID: 63370f74-6fea-4f4d-b585-8956b41a28d0
dc.identifier.otherScopus: 85041479837
dc.identifier.otherORCID: /0000-0002-4857-5562/work/47136454
dc.identifier.otherWOS: 000424153300009
dc.descriptionThis research was financially supported by the European Research Council under the European Union's Seventh Framework Programme (FP/2007- 2013)/ERC Grant Agreement No. 306298 (EN -LUMINATE) and under the European Union’s Horizon 2020 Framework Programme (FP/2014- 2020)/ERC Grant Agreement No. 640012 (ABLASE) and by the EPSRC Programme Grant EP/P030017/1. L.T. thanks EPSRC for support through the CM -DTC (EP/L015110/1).en
dc.description.abstractExciton-polaritons are quasiparticles with hybrid light–matter properties that may be used in new optoelectronic devices. Here, electrically pumped ultrastrongly coupled exciton-polaritons in a high-mobility donor–acceptor copolymer are demonstrated by integrating a light-emitting field-effect transistor into a metal-clad microcavity. Near-infrared electroluminescence is emitted exclusively from the lower polariton branch, which indicates efficient relaxation. A coupling strength of 24% of the exciton transition energy implies the system is in the ultrastrong coupling regime with a narrow and almost angle-independent emission. The lower polariton energy, which can be adjusted by the cavity detuning, strongly influences the external quantum efficiency of the device. Driving the transistors at ambipolar current densities of up to 4000 A cm−2 does not decrease the coupling strength or polariton emission efficiency. Cavity-integrated light-emitting field-effect transistors thus represent a versatile platform for polariton emission and polaritonic devices.
dc.relation.ispartofAdvanced Optical Materialsen
dc.rights© 2017 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.en
dc.subjectUltrastrong couplingen
dc.subjectLight-emitting transistorsen
dc.subjectDonor-acceptor copolymersen
dc.subjectQC Physicsen
dc.subjectT Technologyen
dc.titleUltrastrong coupling of electrically pumped near-infrared exciton-polaritons in high mobility polymersen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Biomedical Sciences Research Complexen
dc.description.statusPeer revieweden

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