| 摘要 |
PROBLEM TO BE SOLVED: To materialize a low drive voltage despite of a work function of a negative electrode material by setting an organic metal complex compound to a component of an organic layer and by constituting a negative electrode of a metal which can reduce a metal ion contained in the complex compound to a metal under vacuum. SOLUTION: An organic metal complex compound used for an organic layer contains, at least, one of an alkali metal ion, an alkaline earth metal ion, a rare earth metal ion. Either of Al, Zr, Ti, Y, Sc, and Si is preferable for a metal used for the negative electrode and a single metal or an alloy containing a plurality of types may be contained therein. A metal of the organic metal complex is isolated by using a reducing force of such metals under vacuum and the organic compound is reduced by its free metal so that an electron injection barrier can be miniaturized and consequently the drive voltage can be reduced. |
