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ORGANIC LIGHT-EMITTING DEVICE HAVING A COLOR-NEUTRAL DOPANT IN AN EMISSION LAYER AND IN A HOLE-TRANSPORT LAYER
ORGANIC LIGHT-EMITTING DEVICE HAVING A COLOR-NEUTRAL DOPANT IN AN EMISSION LAYER AND IN A HOLE-TRANSPORT LAYER
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机译:在发光层和空穴传输层中具有彩色中性掺杂剂的有机发光器件
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摘要
PURPOSE: An OLED(Organic Light Emitting Device) having a color-neutral dopant in an emission layer and in a hole-transport layer is provided to be capable of improving operation life. CONSTITUTION: An OLED(300) is similar to the OLED of the prior art, except that both a hole-transport layer(340) and an emission layer(350) contain a color-neutral dopant. The hole-transport layer(340) may optionally be subdivided into two or more sublayers(341,342). Additional components include a substrate(310), an anode(320), an optional hole-injection layer(330), an electron-transport layer(360), and a cathode(370). The emission layer(350) contains a color-neutral dopant. It is also possible for the cathode(370), rather than the anode, to reside on the substrate.
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