Solution-Processed OLED Based on a Mixed-Ligand Europium Complex
Makarii I. Kozlov, K. M. Kuznetsov, Alexander S. Goloveshkin, Andrei Burlakin, Maria A. Sandzhieva, Sergey Makarov, Elena Ilina, Valentina V. Utochnikova
Abstract
An approach to increase the efficiency of europium-based OLEDs was proposed through the formation of a mixed-ligand complex. The design of a series of europium complexes, together with an optimization of the solution deposition, including the host selection, as well as the variation of the solvent and deposition parameters, resulted in a noticeable increase in OLED luminance. As a result, the maximum luminance of the Eu-based OLED reached up to 700 cd/m2, which is one of the highest values for an Eu-based solution-processed OLED. Finally, its stability was investigated.
Topics & Concepts
EuropiumOLEDLuminanceLigand (biochemistry)Materials scienceStability (learning theory)Deposition (geology)ChemistryOptoelectronicsComputer scienceOpticsNanotechnologyPhysicsLuminescenceSedimentBiochemistryPaleontologyMachine learningLayer (electronics)BiologyReceptorOrganic Light-Emitting Diodes ResearchLanthanide and Transition Metal ComplexesConducting polymers and applications