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  1. Article

    Open Access

    A library of ab initio Raman spectra for automated identification of 2D materials

    Raman spectroscopy is frequently used to identify composition, structure and layer thickness of 2D materials. Here, we describe an efficient first-principles workflow for calculating resonant first-order Raman...

    Alireza Taghizadeh, Ulrik Leffers, Thomas G. Pedersen in Nature Communications (2020)

  2. Article

    Open Access

    Interlayer excitons in van der Waals heterostructures: Binding energy, Stark shift, and field-induced dissociation

    Photoexcited intralayer excitons in van der Waals heterostructures (vdWHs) with type-II band alignment have been observed to tunnel into interlayer excitons on ultrafast timescales. Such interlayer excitons ha...

    Høgni C. Kamban, Thomas G. Pedersen in Scientific Reports (2020)

  3. Article

    Open Access

    Dissociation of two-dimensional excitons in monolayer WSe2

    Two-dimensional (2D) semiconducting materials are promising building blocks for optoelectronic applications, many of which require efficient dissociation of excitons into free electrons and holes. However, the...

    Mathieu Massicotte, Fabien Vialla, Peter Schmidt in Nature Communications (2018)

  4. Article

    Open Access

    Model dielectric function for 2D semiconductors including substrate screening

    Dielectric screening of excitons in 2D semiconductors is known to be a highly non-local effect, which in reciprocal space translates to a strong dependence on momentum transfer q. We present an analytical model d...

    Mads L. Trolle, Thomas G. Pedersen, Valerie Véniard in Scientific Reports (2017)