Materials Science of Complex Interfaces

Surface Plasmon Polaritons in Organic Light-Emitting Diodes

The performance of organic light emitting devices (OLED) suffers from low extraction efficiencies of photons generated inside a thin-film multilayer stack. Possible non-radiative pathways are coupling of light to wave-guided modes inside the substrate and the organic layers, to surface plasmon polaritons (SPP) and to charge oscillations not capable of propagation at the electrodes. In this project we investigate the mechanism of energy transfer from radiant organic dyes to different channels and develop methods to utilize them for light-emission and spectroscopy.