Three-particle complexes in two-dimensional semiconductors

Ganchev, Bogdan and Drummond, Neil and Aleiner, Igor and Falko, Vladimir (2015) Three-particle complexes in two-dimensional semiconductors. Physical review letters, 114 (10): 107401. ISSN 1079-7114

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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)}.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
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© 2015 American Physical Society
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?? physics and astronomy(all) ??
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Deposited On:
18 Jun 2015 05:45
Last Modified:
17 Feb 2024 00:46