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Article
Open AccessA 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...
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Article
Open AccessInterlayer 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...
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Article
Lithographic band structure engineering of graphene
Two-dimensional materials such as graphene allow direct access to the entirety of atoms constituting the crystal. While this makes sha** by lithography particularly attractive as a tool for band structure en...
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Article
Open AccessDissociation 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...
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Article
Open AccessModel 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...
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Article
Bandgap opening in graphene induced by patterned hydrogen adsorption
Several routes designed to induce a bandgap opening in graphene have been proposed. It is now demonstrated that hydrogen adsorption on the Moiré pattern induced by an iridium substrate can induce a bandgap of ...
