Anharmonic Exciton‐Phonon Coupling in Metal‐Organic Chalcogenides Hybrid Quantum Wells (Advanced Optical Materials 7/2023)

When a photon is absorbed in a quantum well, it generates a bound electron‐hole pair called exciton. Metal organic chalcogenides are layered hybrid quantum well structures, which can host room‐temperature stable 2D excitons. Due to the material's relatively soft lattice, the exciton can strongly couple to lattice vibrations and deformations, generating a new quasiparticle described by a phonon‐dressed excitonic state. For further details, see article number 2202213 by Christoph Kastl, Pietro Bonfà, and Lorenzo Maserati.