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  • PhysRevLett.114.107401

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Three-particle complexes in two-dimensional semiconductors

Research output: Contribution to journalJournal article

Published
Article number107401
<mark>Journal publication date</mark>13/03/2015
<mark>Journal</mark>Physical review letters
Issue number10
Volume114
Number of pages5
Publication statusPublished
Original languageEnglish

Abstract

We evaluate binding energies of trions X^{±}, excitons bound by a donor or acceptor charge X^{D(A)}, and overcharged acceptors or donors in two-dimensional atomic crystals by mapping the three-body problem in two dimensions onto one particle in a three-dimensional potential treatable by a purposely developed boundary-matching-matrix method. We find that in monolayers of transition metal dichalcogenides the dissociation energy of X^{±} is typically much larger than that of localized exciton complexes, so that trions are more resilient to heating, despite the fact that their recombination line in optics is less redshifted from the exciton line than the line of X^{D(A)}.

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© 2015 American Physical Society