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Regensburg 2016 – scientific programme

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DS: Fachverband Dünne Schichten

DS 5: Two-dimensional Materials
(Joint session of DS and HL, organized by HL)

DS 5.9: Talk

Monday, March 7, 2016, 12:15–12:30, H16

Investigation of excitonic resonances in monolayer MoSe2 for strong coupling experiments at room temperature — •Nils Lundt1, Aleksander Maryński2, Grzegorz Sek2, Oliver Iff1, Sefaattin Tongay3, Sven Höfling1,4, and Christian Schneider11Chair for Apllied Physics, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany — 2Institute of Physics, Wrocław University of Technology, Wybrzeze Wyspiańskiego 27, 50-370 Wrocław, Poland — 3School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States — 4SUPA, School of Physics and Astronomy, University of St. Andrews, St. Andrews KY 16 9SS, United Kingdom

We studied the temperature evolvement of the reflectivity of a MoSe2 monolayer. From this investigation we deduced the dependence of linewidth and oscillator strength on temperature. The results were used for transfer matrix simulations of strong coupling reflectivity spectra, expected if the MoSe2 monolayer is integrated into a micro-cavity. These calculations should evaluate, if strong coupling can be observed in MoSe2 monolayers at room temperature. Calculations were conducted for different cavity designs such as an open cavity approach, a monolithic cavity and for the coupling to a Tamm Plasmon. Moreover, we present results of excitation power dependent photoluminescence studies on MoSe2 monolayers.

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