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Highly Efficient Single‐Layer Polymer Electrophosphorescent Devices
Author(s) -
Yang X.,
Neher D.,
Hertel D.,
Däubler T. K.
Publication year - 2004
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.200305621
Subject(s) - materials science , phosphorescence , layer (electronics) , polymer , optoelectronics , diode , oled , space charge , layer by layer , thermal , nanotechnology , optics , composite material , physics , quantum mechanics , fluorescence , electron , meteorology
A commercially available Ir complex has been employed for the preparation of highly efficient (see Figure) single‐layer phosphorescent polymer light‐emitting diodes by use of appropriate thermal treatment and proper adjustment of the layer composition. These devices exhibit essentially no dependence of the driving field on the concentration of the Ir complex, suggesting that the build‐up of space‐charge in the layer is insignificant.