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Interlayer Excitonic Spectra of Vertically Stacked MoSe 2 /WSe 2 Heterobilayers
Author(s) -
Gillen Roland
Publication year - 2021
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202170031
Subject(s) - exciton , heterojunction , spectral line , absorption spectroscopy , spectroscopy , materials science , bilayer , excitation , molecular physics , absorption (acoustics) , ab initio quantum chemistry methods , condensed matter physics , chemistry , optics , optoelectronics , physics , molecule , biochemistry , organic chemistry , quantum mechanics , astronomy , membrane , composite material
In article number 2000614 , Roland Gillen addresses simulations of the optical spectra of bilayer MoSe 2 /WSe 2 heterostructures using modern theoretical spectroscopy methods. Due to the complex electronic band structure, optical excitation of such heterostructures by incident light (top image on the cover) gives rise to a variety of excitonic resonances in the absorption spectra (middle panel). Here, ab initio simulations reveal contributions from excitons with large interlayer charge separation both below the absorption onset (left side of bottom panel) and as novel ‘interlayer C excitons’ within the band continuum at higher energies (right side of bottom panel).