- Sky-Blue Phosphorescent OLEDs with 34.1% External Quantum Efficiency Using a Low Refractive Index Electron Transporting Layer.
Sky-Blue Phosphorescent OLEDs with 34.1% External Quantum Efficiency Using a Low Refractive Index Electron Transporting Layer.
Advanced materials (Deerfield Beach, Fla.) (2016-04-12)
Hyun Shin, Jeong-Hwan Lee, Chang-Ki Moon, Jin-Suk Huh, Bomi Sim, Jang-Joo Kim
PMID27060851
ABSTRACT
Blue-phosphorescent organic light-emitting diodes (OLEDs) with 34.1% external quantum efficiency (EQE) and 79.6 lm W(-1) are demonstrated using a hole-transporting layer and electron-transporting layer with low refractive index values. Using optical simulations, it is predicted that outcoupling efficiencies with EQEs > 60% can be achieved if organic layers with a refractive index of 1.5 are used for OLEDs.
MATERIALI