Transport and optical modeling of organic light-emitting diodes

We present detailed theoretical modeling of organic light-emitting diodes. We incorporate both optical and electrical modeling into one and thus achie ve a more comprehensive picture of the device operation. The importance of including the exciton generation and emission rate in a transport model is highlighted and we find that in such devices the charge recombination zone is not necessarily identical to the exciton emission zone. Moreover, both t he electrical and optical structure affect the exciton density distribution and thus also the externally measured light. (C) 2000 American Institute o f Physics. [S0003-6951(00)00838-X].