Suppressing singlet–triplet annihilation processes to achieve highly efficient deep-blue AIE-based OLEDs
Chengwei Lin, Pengbo Han, Fenlan Qu, Shu Xiao, Yuanzhao Li, Dian Xie, Xianfeng Qiao, Dezhi Yang, Yanfeng Dai, Qian Sun, Anjun Qin, Ben Zhong Tang, Dongge Ma
Abstract
) of AIE molecules. It can be seen that the external quantum efficiency (EQE) of the resulting blue OLEDs was enhanced to 11.8% with CIE coordinates of (0.15, 0.07) and a negligible efficiency roll-off, realizing the efficiency breakthrough of deep-blue AIE-based OLEDs. This work establishes a physical insight in revealing the exciton loss processes and the fabrication of high-performance AIE-based OLEDs.
Topics & Concepts
OLEDQuantum efficiencyExcitonElectroluminescenceMaterials scienceAnnihilationSinglet statePhotoluminescenceOptoelectronicsQuenching (fluorescence)Quantum yieldSinglet fissionPhotochemistryExcited stateChemistryFluorescenceNanotechnologyAtomic physicsPhysicsOpticsCondensed matter physicsQuantum mechanicsLayer (electronics)Organic Light-Emitting Diodes ResearchLuminescence and Fluorescent MaterialsOrganic Electronics and Photovoltaics