New hybrid encapsulation for flexible organic light-emitting devices on plastic substrates
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The hybrid encapsulation for flexible organic light-emitting devices on plastic substrate was investigated. The hybrid encapsulation consisted of four periods of Alq3/LiF layers as the pre-encapsulation layer and a flexible aluminum foil coated with getter as the encapsulation cap. We measured the device lifetime at a continuous constant current of 20 mA/cm2, which corresponded to an initial luminance of 2000 cd/m2. The half-luminance decay time of the encapsulated device was about 458 h. More over, the hybrid encapsulation is ultrathin and flexible, ensuring device bendability.
Keywordsorganic light-emitting device flexible display hybrid encapsulation lifetime
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