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Low Driving Voltage, High Quantum Efficiency, High Power Efficiency, and Little Efficiency Roll‐Off in Red, Green, and Deep‐Blue Phosphorescent Organic Light‐Emitting Diodes Using a High‐Triplet‐Energy Hole Transport Material
Author(s) -
Cho Yong Joo,
Lee Jun Yeob
Publication year - 2011
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.201102045
Subject(s) - phosphorescence , oled , optoelectronics , materials science , diode , quantum efficiency , deep blue , power (physics) , electrical efficiency , efficient energy use , phosphorescent organic light emitting diode , high energy , engineering physics , electrical engineering , nanotechnology , optics , physics , photochemistry , chemistry , engineering , layer (electronics) , quantum mechanics , fluorescence
Improved device performance in red, green, and deep‐blue phosphorescent organic light‐emitting diodes is achieved using a new high‐triplet‐energy hole transport material. The driving voltage is lowered and the power efficiency is improved by more than 70% using the new hole transport material.