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arXiv · 1606.08213

Exciton-phonon relaxation bottleneck and radiative decay of thermal exciton reservoir in two-dimensional materials

A. O. Slobodeniuk·D. M. Basko
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Abstract

We study exciton radiative decay in a two-dimensional material, taking into account large thermal population in the non-radiative states, from which excitons are scattered into the radiative states by acoustic phonons. We find an analytical solution of the kinetic equation for the non-equilibrium distribution function of excitons in the radiative states. Our estimates for bright excitons in transition metal dichalcogenides indicate a strong depletion of radiative state population due to insufficient exciton-phonon scattering rate at low temperatures.

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A. O. Slobodeniuk, D. M. Basko. 2016-06-27. Exciton-phonon relaxation bottleneck and radiative decay of thermal exciton reservoir in two-dimensional materials. https://doi.org/10.1103/physrevb.94.205423

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