Highly efficient polymer light-emitting devices based on sodium compounds electron injection layer

Organic- Inorganic Nanoparticle Composite as an Electron Injection/Hole Blocking Layer in Organic Light Emitting Diodes for Large Area Lighting Applications

“…Finally, however, to understand the functionality of the PEIE-ZnO NC layer, i.e, to act with electron injection and hole blocking capabilities, the external quantum efficiency of the devices was measured. The reported maximum EQE for a standard three organic layer devices with SY as an emissive layer, was measured with a thermally evaporated lithium fluoride EIL with additional surface modifier (6.4 %) 88 (supplementary table 2). In this study, with a solution processed PEIE-ZnO NC without any surface modification, we achieved an EQE of 6.1 %.…”