Modelling of optical interference effects in conjugated polymer films and devices

In this paper, we model the effects of optical interference on the emission properties of conjugated polymer thin films and devices. The influence of dielectric interfaces and metal surfaces on the radiative lifetime of the singlet exciton is investigated in a number of multi-layer structures. We find that changing the structure can have a significant effect on the radiative lifetime, and we discuss the effect of this change on the emission spectrum as well as the measured photoluminescence efficiency. We compare the results of our model with the results of photoluminescence experiments using a number of structures.