COOPERATIVE RADIATIVE DECAY OF DISORDERED MOLECULAR MONOLAYERS

The time-resolved spontaneous emission from a disordered molecular mon olayer is calculated using Green-function techniques. In addition to a fast-decaying transmitted and reflected coherent component in the for ward direction, and a slowly decaying, incoherent, spatially homogeneo us background, we predict a backscattering peak related to weak locali zation of excitons. Analytical and numerical calculations of the energ y- and disorder-dependent cooperative radiative decay rate, the quantu m yield of the coherent and incoherent components, and the exciton dif fusion coefficient are presented.