The interplay between excitons and trions in a monolayer of MoSe$_2$

N. Lundt; E. Cherotchenko; O. Iff; X. Fan; Y. Shen; P. Bigenwald; A. Kavokin; S. Höfling; C. Schneider

doi:10.1063/1.5019177

The interplay between excitons and trions in a monolayer of MoSe$_2$

Mesoscale and Nanoscale Physics 2018-02-14 v1

Authors: N. Lundt , E. Cherotchenko , O. Iff , X. Fan , Y. Shen , P. Bigenwald , A. Kavokin , S. Höfling , C. Schneider

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Abstract

We study the impact of a free carrier reservoir on the optical properties of excitonic and trionic complexes in a MoSe $_2$ monolayer at cryogenic temperatures. By applying photodoping via a non-resonant pump laser the electron density can be controlled in our sample and in turn the exciton and trion densities can be tuned. We find a significant increase of the trion binding energy in the presence of an induced electron gas both in power- and in time-resolved photoluminescence spectra. This behaviour is reproduced within the original variational approach that takes into account both screening and phase space filling effects.

Keywords

MoSe2 monolayer excitons trions free carrier reservoir photodoping trion binding energy variational approach

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@article{arxiv.1702.04231,
  title  = {The interplay between excitons and trions in a monolayer of MoSe$_2$},
  author = {N. Lundt and E. Cherotchenko and O. Iff and X. Fan and Y. Shen and P. Bigenwald and A. Kavokin and S. Höfling and C. Schneider},
  journal= {arXiv preprint arXiv:1702.04231},
  year   = {2018}
}

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8 pages, 3 figures

The interplay between excitons and trions in a monolayer of MoSe$_2$

Abstract

Keywords

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