Organic electroluminescence device
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United States of America Patent
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Aug 31, 2010
Grant Date -
Oct 19, 2006
app pub date -
Nov 30, 2005
filing date -
Apr 13, 2005
priority date (Note) -
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Abstract
The present invention relates to an organic electroluminescence device comprising a substrate, an anode, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, an electron injection layer, and a cathode, wherein the electron injection layer contains alkali metal nitride and has a thickness of 0.2-10 nm. The organic electroluminescence device of the present invention has improved electron injection from the cathode to the organic layer, high device luminance and efficiency, long device lifetime, low material poisonousness, wide choice of film-forming thickness and low film-forming temperature.
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