Enhanced interlayer neutral excitons and trions in MoSe2/MoS2/MoSe2 trilayer heterostructure

Dielectric screening of excitons and trions in single-layer MoS2.

Photoluminescence (PL) properties of single-layer MoS2 are indicated to have strong correlations with the surrounding dielectric environment. Blue shifts of up to 40 meV of exciton or trion PL peaks were observed as a function of the dielectric constant of the environment. These results can be explained by the dielectric screening effect of the Coulomb potential; based on this, a scaling relati...

Identification of excitons, trions and biexcitons in singlelayer WS2

Gate-induced interlayer asymmetry in ABA-stacked trilayer graphene

We calculate the electronic band structure of ABA-stacked trilayer graphene in the presence of external gates, using a self-consistent Hartree approximation to take account of screening. In the absence of a gate potential, there are separate pairs of linear and parabolic bands at low energy. A gate field perpendicular to the layers breaks mirror reflection symmetry with respect to the central l...

Interlayer exciton dynamics in a dichalcogenide monolayer heterostructure

Fine structure of trions and excitons in single GaAs quantum dots

Although the negatively charged trion in semiconductors was originally predicted in 1958 by Lampert, a proper identification of the X was not achieved until the early 1990s in remotely doped high-quality quantum-well ~QW! structures. Since then, extensive work has been carried out on the two-dimensional ~2D! X in wide quantum wells, and more recently on the 0D X in QD’s. In many of these studie...