| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an organic electroluminescent element with an organic layer as a light emitting layer formed by a wet film forming method, whose light emission lifetime hardly deteriorates even if its coated film is made in an atmosphere containing oxygen and moisture, in other words, an organic electroluminescent element with low manufacturing cost and long drive lifetime, and further, provide a production method for a safe and low production cost organic electroluminescent element that is highly efficient in production. <P>SOLUTION: The organic electroluminescent element has an organic layer between an anode and a cathode, wherein the organic layer includes a light emitting layer formed by the wet film forming method, and the light emitting layer uses a luminescent material not having two or more amino groups in one molecule and a light emitting layer forming composition containing a charge transport material and an organic solvent to form a coated film by the wet film forming method in an environment with an oxygen concentration of 18 to 22 vol.% and then heat it for film formation. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
