CONTROL OF THE EMISSION PROPERTIES OF CONJUGATED POLYMERS - TRAPPING AND MICROCAVITY EFFECTS

We report on two different approaches to modify the emission spectra o f poly(phenyl-phenylenevinylene). By doping with different amounts of a laser dye, the fluorescence spectra shift to lower energies due to p icosecond transfer of the excitations from conjugated segments of the polymer to the acceptor molecules. As an alternative approach we show that Fabry-Perot microcavities can be used to control and enhance the spontaneous emission of a conjugated polymer layer.