Hybridized local and charge-transfer materials using pyrene as π-bridge towards negligible efficiency roll-off in non-doped OLED
Yuqin Du, Yali Peng, Wenjian Dong, Huixia Xu, Xinyu Li, Kang Chen, Feng Wang, Yanqin Miao, Peng Tao, Hua Wang, Junsheng Yu
Abstract
The planar pyrene facilitates the efficient multiple hRISC process in hot-exciton materials. The almost equal hRISC and radiative rates overcomes the efficiency roll-off in non-doped device, realizing a maximum EQE of 9.41%.
Topics & Concepts
OLEDDopingPyreneCharge (physics)Materials scienceOptoelectronicsBridge (graph theory)Transfer (computing)Chemical physicsChemistryNanotechnologyComputer sciencePhysicsOrganic chemistryParallel computingLayer (electronics)MedicineInternal medicineQuantum mechanicsOrganic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsConducting polymers and applications