Molecular Excitons

Classification - Atomic and Molecular Excitons
... Alternatively, an exciton may be thought of as an excited state of an atom, ion, or molecule, the excitation wandering from one cell of the lattice ... absorbs a quantum of energy that corresponds to a transition from one molecular orbital to another molecular orbital, the resulting electronic excited state is also properly described as an exciton ... the lowest unoccupied orbital and an electron hole in the highest occupied molecular orbital, and since they are found within the same molecular orbital manifold, the electron-hol ...