Premium
A Solution‐Processed Resonance Host for Highly Efficient Electrophosphorescent Devices with Extremely Low Efficiency Roll‐off
Author(s) -
Tao Ye,
Guo Xin,
Hao Lin,
Chen Runfeng,
Li Huanhuan,
Chen Yuehua,
Zhang Xinwen,
Lai Wenyong,
Huang Wei
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201503108
Subject(s) - phosphorescence , quantum efficiency , materials science , oled , resonance (particle physics) , optoelectronics , host (biology) , service (business) , diode , computer science , nanotechnology , physics , optics , fluorescence , atomic physics , economy , layer (electronics) , economics , ecology , biology
Solution‐processible N–P=O resonance‐host molecules are applied successfully in spin‐coated phosphorescent light‐emitting diodes (PHOLEDs) to selectively and self‐adaptively tune the electrical properties for balanced charge transportation. The resonance‐molecule‐hosted PHOLEDs exhibit a high maximum quantum efficiency of 16.5% and a low efficiency roll‐off down to 0.7%, highlighting the significant progress of these solution‐processed PHOLEDs with high efficiency and flat efficiency roll‐off achieved simultaneously.