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University of Cambridge > Talks.cam > Theory of Condensed Matter > Trions and Biexcitons in Two-Dimensional Semiconductors
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If you have a question about this talk, please contact Gareth Conduit. Two-dimensional semiconductors such as transition metal dichalcogenides exhibit unusually strong excitonic effects due to the reduced screening of the Coulomb interaction between charge carriers at long range. Photoexcitation experiments reveal a rich structure in the absorption spectra of these materials, including lines ascribed to various complexes of charge carriers and donor/acceptor ions. I will describe diffusion quantum Monte Carlo calculations of the binding energies of such complexes and I will discuss the implications of the results for the optoelectronic properties of molybdenum and tungsten dichalcogenides. This talk is part of the Theory of Condensed Matter series. This talk is included in these lists:
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