Organic Light Emitting Devices (OLED) have attracted much attention recently
for their applications in futureFlat Panel Displays and lighting products. However
their fast degradation remained a major obstacle to theircommercialization. Here we present a brief summary of our studies on both extrinsic and intrinsic causes for the fastdegradation of OLEDs. In particular
we focus on the origin of the dark spots by "rebuilding" cathodes
which confirms thatthe growth of dark spots occurs primarily due to cathode delamination.In the meantime
we recapture the findings from the search for suitable OLED packaging materials
in particular polymer composites
which provide both heat dissipation and moisture resistance
in addition to electrical insulation.
Abstract
Organic Light Emitting Devices (OLED) have attracted much attention recently
for their applications in futureFlat Panel Displays and lighting products. However
their fast degradation remained a major obstacle to theircommercialization. Here we present a brief summary of our studies on both extrinsic and intrinsic causes for the fastdegradation of OLEDs. In particular
we focus on the origin of the dark spots by "rebuilding" cathodes
which confirms thatthe growth of dark spots occurs primarily due to cathode delamination.In the meantime
we recapture the findings from the search for suitable OLED packaging materials
in particular polymer composites
which provide both heat dissipation and moisture resistance
in addition to electrical insulation.
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