[We-P] 2D materials

[We-P-38] Excitation Dynamics in Monolayer MoSe₂ Probed by Excitation Correlation Spectroscopy

Mateusz Raczyński¹, Kacper Oreszczuk¹, Aleksander Rodek¹, Maksymilian Kuna¹, Tomasz Kazimierczuk¹, Karol Nogajewski¹, James Howarth², Takashi Taniguchi³, Kenji Watanabe⁴, Marek Potemski^1,5,6, 〇Piotr Kossacki¹ (1. Inst. of Exp. Physics, Faculty of Physics, Univ. of Warsaw (Poland), 2. National Graphene Inst., Univ. of Manchester (UK), 3. Research Center for Materials Nanoarchitectonics, National Inst. for Materials Science (Japan), 4. Research Center for Electronic and Optical Materials, National Inst. for Materials Science (Japan), 5. Lab. National des Champs Magnétiques Intenses, UPR 3228,CNRS, EMFL, Univ. Grenoble Alpes (France), 6. CEZAMAT, CENTERA Labs, Warsaw Univ. of Technology (Poland))

We study ultrafast excitonic relaxation in monolayer MoSe2 using excitation correlation spectroscopy with femtosecond resolution. Auger recombination dominates photoluminescence quenching and reveals sub-picosecond free-carrier relaxation and direct charged-exciton formation.