Berlin 2018 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 2: 2D Materials: Session I (joint session DS/CPP/HL)
DS 2.5: Vortrag
Montag, 12. März 2018, 10:30–10:45, H 2032
Photoluminescence study of MoS2 monolayers integrated with photonic nanostructures — •Rajeshkumar Mupparapu1, Tobias Bucher1, Aleksandr Vaskin1, Franz Löchner1, Antony George2, Katie E. Chong3, Stefan Fasold1, Christof Neumann2, Duk-Yong Choi4, Falk Eilenberger5, Frank Setzpfandt1, Yuri S. Kivshar3, Thomas Pertsch1, Andrey Turchanin2, and Isabelle Staude1 — 1Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany — 2Institute of Physical Chemistry, Friedrich Schiller University Jena, Jena, Germany — 3Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Canberra, Australia — 4Laser Physics Centre, Research School of Physics and Engineering, The Australian National University, Canberra, Australia — 5Fraunhofer Institute for Applied Optics and Precision Engineering, Jena, Germany
Interaction of light with MoS2 monolayers can be enhanced by integrating them with resonant nanostructures [1], and such interaction allows to manipulate their photoluminescence (PL) directionality and polarization. Here, we investigated the PL properties of MoS2 monolayers integrated with resonant Silicon nanostructures [2] to explore the behavior of PL and valley polarization. Experiments performed on MoS2-nanostructures reveal a significant PL enhancement [3], dominantly due to the local strain rather than Purcell enhancement. We further studied the valley polarization of MoS2 flakes under different locally modified environments.
References:
. S. Butun, et al., Nano Lett., 2015, 15, 2700-2704.
. M. Decker, I. Staude, J. Opt. 18, 103001 (2016).
. T. Bucher, et al., CLEO/Europe-EQEC 2017, Munich, EI-4.5, (2017).