excitonrelated
Exciton-related refers to phenomena and properties tied to excitons, which are bound states of an electron and a hole bound by Coulomb attraction in insulators and semiconductors. Excitons form when a material absorbs energy that promotes an electron across the band gap, leaving a hole behind; the electron and hole remain bound as an excited state below the conduction band edge. They may also form via charge-transfer at donor–acceptor interfaces.
Two broad classes are recognized. Frenkel excitons are localized on a molecule or lattice site, typical in
Exciton dynamics include diffusion, recombination, and dissociation into free carriers; lifetimes range from picoseconds to nanoseconds
Exciton-related phenomena include exciton-polaritons in optical microcavities, where strong light-matter coupling yields hybrid quasiparticles; energy transfer
Measurement and study rely on spectroscopy, including photoluminescence, absorption, and time-resolved or transient techniques, to extract