Show simple item record

Files in this item


Item metadata

dc.contributor.authorTropf, Laura
dc.contributor.authorGather, Malte C.
dc.identifier.citationTropf , L & Gather , M C 2018 , ' Investigating the onset of the strong coupling regime by fine-tuning the Rabi splitting in multilayer organic microcavities ' , Advanced Optical Materials , vol. Early View , 1800203 .
dc.identifier.otherPURE: 253211718
dc.identifier.otherPURE UUID: 6554be46-6fcf-4167-b980-91a98fa3416d
dc.identifier.otherScopus: 85052746518
dc.identifier.otherORCID: /0000-0002-4857-5562/work/47136447
dc.identifier.otherWOS: 000443548600005
dc.descriptionThis research was financially supported by the European Research Council under the European Union’s Horizon 2020 Framework Programme (FP/2014-2020)/ERC Grant Agreement No. 640012 (ABLASE), the Volkswagen Foundation (93404), and the Scottish Funding Council (through SUPA). L.T. acknowledges the studentship funding through the EPSRC CM-CDT (EP/L015110/1).en
dc.description.abstractGiven the prevalence of disorder in many organic semiconductors, the applicability of simple models to describe their behavior in the strong coupling regime, like the two-level coupled oscillator, is not evident. Here, the validity of the two-level coupled oscillator model and the simple dependence of the coupling strength on the number of absorbers and the electric field is tested experimentally in metal-clad microcavities containing a disordered film of small molecules. Multi-layer microcavities are produced by combining different thin film deposition techniques. These allow for isolating the relevant parameters and thus to confirm the coupling strength is proportional to (1) the square root of the number of absorbers and (2) the amplitude of the electric field. By changing either of these two parameters, the microcavities are shifted from the weak to the strong coupling regime. Moreover, careful analysis reveals that there is a threshold coupling strength for the onset of the Rabi splitting. Two independent investigations show that this threshold is comparable to the losses in the cavities. These results validate the coupled two-level Hamiltonian for microcavities containing disordered organic semiconductors, even though the assumption of a single exciton level represents a strong simplification for these systems.
dc.relation.ispartofAdvanced Optical Materialsen
dc.rights© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectLight-matter couplingen
dc.subjectSmall moleculesen
dc.subjectQC Physicsen
dc.titleInvestigating the onset of the strong coupling regime by fine-tuning the Rabi splitting in multilayer organic microcavitiesen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Organic Semiconductor Centreen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record