Embedding organic light-emitting diodes into channel waveguide structures

Combining optical waveguides and organic light-emitting diodes (OLEDs) is a key requirement for optical sensors based on organic materials. A device architecture in which the active layers of the OLED also form the waveguide structure is demonstrated (see figure), and it is shown that the choice of materials with adequate optical an electrical properties is crucial to obtain low-loss waveguides.