Effects of confinement and environment on the electronic structure and exciton binding energy of MoS2 from first principles

By H. Komsa, A. Krasheninnikov. 2012

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Molecular-beam epitaxy of monolayer and bilayer WSe2: a scanning tunneling microscopy/spectroscopy study and deduction of exciton binding energy (2015, background): “Indeed, giant excitonic effect in ultrathin TMDs originating from enhanced Coulomb interaction between electrons and holes due to spatial confinement and reduced dielectric screening is one of the remarkable properties of the 2D systems, which are attracting extensive theoretical and experimental at”
Excitons in van der Waals heterostructures: The important role of dielectric screening (2015, background): “03 eV higher than the previously reported ab initio value for bulk MoS2 [40].”
Few-layer MoS2: a promising layered semiconductor. (2014, background): “single-layer MoS2 opens up a whole new host of possibilities in optical properties and optoelectronic devices.(53,90,130,134) 140 Photoluminescence studies show a very high quantum yield for monolayer MoS2 and also affirm the optical transition band gap at around 1.”