Trion and Biexciton in Monolayer Transition Metal Dichalcogenides

Abstract

We study the trion and biexciton in transition metal dichalcogenides monolayers within the framework of a nonrelativistic potential model using the method of hyperspherical harmonics (HH). We solve the three- and four-body Schrödinger equations with the Keldysh potential by expanding the wave functions of a trion and biexciton in terms of the antisymmetrized HH. Results of the calculations for the ground state energies are in good agreement with similar calculations for the Keldysh potential and in reasonable agreement with experimental measurements of trion and biexciton binding energies.

4 pages

References in corpus (2)

• Computational 2D Materials Database: Electronic Structure of Transition-Metal Dichalcogenides and Oxides
• Exciton Binding Energy of Monolayer WS2

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• Valley Degree of Freedom in Two-Dimensional van der Waals Materials
• Local field effects in ultrafast light-matter interaction measured by pump-probe spectroscopy of monolayer MoSe${}_2$
• Excitonic theory of doping-dependent optical response in atomically thin semiconductors
• Trion clustering structure and binding energy in 2D semiconductor materials: Faddeev equations approach
• Theory of the Coherent Response of Magneto-Excitons and Magneto-Biexcitons in Monolayer Transition Metal Dichalcogenides
• Energy states of Rydberg excitons in finite crystals: From weak to strong confinement
• Trion ground state energy: simple results
• Radiative Decay of Dark Exciton Related Emission in a Sandwiched Monolayer WSe2 Revealed by Room Temperature Micro and Nano Photoluminescence