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This work aims to model excitonic effects in GeSn/SiGeSn heterostructures using a quantum-dynamical framework.

Exciton dynamics and absorption in GeSn/SiGeSn MQWs

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This work aims to model excitonic effects in GeSn/SiGeSn heterostructures using a quantum-dynamical framework.
Developed a single-band tight-binding Hamiltonian for the model.
Derived equations of motion for the density matrix in superoperator form.
Utilized adaptive Runge–Kutta scheme for numerically solving dynamics and analyzing stationary exciton states.
Findings indicate that absorption enhancement heavily relies on spatial overlap and Coulomb coupling of confined states.
Excitonic binding energies and absorption spectra vary significantly based on Sn composition and quantum well geometry.
Time-resolved observables provide insights into the dynamics and capabilities of these materials in mid-infrared applications.

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Randomized trial investigates exciton behavior and absorption in group-IV semiconductors, suggesting design insights for photonic materials.

Abdi et al. (2026) studied this question.

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Randomized trial investigates exciton behavior and absorption in group-IV semiconductors, suggesting design insights for photonic materials.