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Self-balancing luminescence kinetics of charged excitons in WS2 monolayer

  • A. I. Veretennikov
  • A. I. Galimov
  • M. M. Glazov
  • T. V. Shubina
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Abstract

Two-dimensional tungsten-based transition metal dichalcogenides exhibit a rich emission spectrum with distinct lines of exciton and biexciton states, neutral and charged, which are typically considered as independent entities. Here, we present a study of the emission kinetics of a WS2 monolayer, demonstrating that these states together form a single interacting ensemble, with their population and depletion mutually coordinated with temperature. Dark trions make a long-lived contribution to the bright trion on a time scale of 200-300 picoseconds, and replenishment from dark states promotes intense luminescence of charged biexcitons. The developed self-consistent rate equation model reproduces the temperature dependence of the kinetics well, opening the way to controlling exciton states in such materials.

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Cite

BibTeXRIS
BibTeX
@misc{veretennikov2026selfbalancing,
  title = {{Self-balancing luminescence kinetics of charged excitons in WS$_2$ monolayer}},
  author = {A. I. Veretennikov and A. I. Galimov and M. M. Glazov and T. V. Shubina},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.17289},
  eprint = {2609.17289},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.17289},
}
RIS
TY  - UNPB
TI  - Self-balancing luminescence kinetics of charged excitons in WS_2 monolayer
AU  - A. I. Veretennikov
AU  - A. I. Galimov
AU  - M. M. Glazov
AU  - T. V. Shubina
PY  - 2026
DA  - 2026/09/15
PB  - arXiv
DO  - 10.48550/arxiv.2609.17289
UR  - https://arxiv.org/abs/2609.17289
AB  - Two-dimensional tungsten-based transition metal dichalcogenides exhibit a rich emission spectrum with distinct lines of exciton and biexciton states, neutral and charged, which are typically considered as independent entities. Here, we present a study of the emission kinetics of a WS_2 monolayer, demonstrating that these states together form a single interacting ensemble, with their population and depletion mutually coordinated with temperature. Dark trions make a long-lived contribution to the bright trion on a time scale of 200-300 picoseconds, and replenishment from dark states promotes intense luminescence of charged biexcitons. The developed self-consistent rate equation model reproduces the temperature dependence of the kinetics well, opening the way to controlling exciton states in such materials.
ER  -