High-efficiency near-infrared fluorescent organic light-emitting diodes with small efficiency roll-off based on AIE-active phenanthro[9,10-<i>d</i>]imidazole derivatives
Futong Liu, Yong-Bo Tan, Hui Liu, Xiangyang Tang, Lei Gao, Chunya Du, Jiarui Min, Haixu Jin, Ping Lü
Abstract
<bold>PIBz-3-PTZ</bold> exhibits strong fluorescence with a photoluminescence quantum yield of 35% in films. The nondoped device achieves a maximum external quantum efficiency of 2.02% peaking at 672 nm with small efficiency roll-off.
Topics & Concepts
Quantum efficiencyMaterials scienceQuantum yieldFluorescencePhotoluminescenceOptoelectronicsOLEDImidazolePhotochemistryInfraredDiodeQuantumYield (engineering)OpticsNanotechnologyChemistryOrganic chemistryLayer (electronics)MetallurgyPhysicsQuantum mechanicsOrganic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsLuminescence and Fluorescent Materials