Molybdenum Oxide Anode Buffer Layers for Solution Processe
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- Category: Molybdenum knowledge
- Published on 29 July 2013
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We present solution processed organic light emitting diodes (OLEDs) comprising small molecule, blue phosphorescent emitter layers from bis picolinatoiridium doped molybdenum trioxide anode buffer layers.
The latter were applied from a molybdenium(V)ethoxide precursor solution that was thermally converted to MoO3 at moderate temperatures.
The high work function MoO3 facilitated hole injection into the emission layer. The MoO3 layer properties were investigated by means of energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy.
MoO3 buffer layers performed superior to the commonly used poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) and enabled an enhanced OLED device efficiency.
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