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Highly Efficient Red Electrophosphorescent Devices Based on Iridium Isoquinoline Complexes: Remarkable External Quantum Efficiency Over a Wide Range of Current
Author(s) -
Su Y.J.,
Huang H.L.,
Li C.L.,
Chien C.H.,
Tao Y.T.,
Chou P.T.,
Datta S.,
Liu R.S.
Publication year - 2003
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.200304630
Subject(s) - phosphorescence , iridium , isoquinoline , materials science , quantum efficiency , excited state , dopant , oled , optoelectronics , phosphorescent organic light emitting diode , photochemistry , fluorescence , doping , nanotechnology , atomic physics , optics , catalysis , chemistry , physics , stereochemistry , organic chemistry , layer (electronics)
Outstanding performance as an emissive dopant in organic light‐emitting devices is shown by red phosphorescent iridium complexes based on an isoquinoline framework (such as that shown in the Figure). Remarkably high efficiency can be maintained in the devices at high currents with a negligible effect from either triplet–triplet (T–T) annihilation or saturation of the excited states.