A New Approach to Donor-Acceptor Energy Transfer Modelling in Rare-Earth-Doped Media Using the Rate Equations

A generalisation of rate equations simulating donor-acceptor energy transfer and describing the time evolution of donors' and acceptors' luminescence power is proposed. These equations were supplemented by a time-dependent probability of the direct static disordered donor-acceptor energy transfer. A clear physical interpretation of the terms in the equations describing the various stages of the donor-acceptor energy transfer is given.