A5097732883- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Luminescence and Fluorescent Materials
- Conducting polymers and applications
Seoul National University of Science and Technology
2019
Host-guest structures are used in most state-of-the-art organic light-emitting devices, with the host transporting charge and confining excitons on guest. While often plays a critical role achieving high efficiency stability, predicting understanding these effects is persistent design challenge which slows discovery of new active materials. Closely related molecules, differ only by several functional groups, show drastically different degradation behavior. Here, we explore this observation...
Abstract We demonstrate improved stability in phosphorescent organic light‐emitting devices (OLEDs) by incorporating a wide energy gap host material into an ambipolar emissive layer. Unlike conventional mixed‐host OLEDs that combine hole‐ and electron‐transporting hosts, charge transport this device occurs primarily along the emitter, while serves to modify injection characteristics of This approach allows both width position exciton recombination zone be tuned without introducing exciplex...