Regensburg 2016 – wissenschaftliches Programm

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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: Vortrag

Montag, 7. März 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 Höfling^1,4, and Christian Schneider¹ — ¹Chair 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.