Patent ID: 7879465

Claim:
An organic electroluminescent element, comprising: an anode layer; an organic luminescent layer; a cathode layer; and a reductive dopant layer between the organic luminescent layer and the cathode layer; wherein: the reductive dopant layer comprises a metal complex according to formula (A): A + Ar 7− (A) wherein: A is an alkali metal; and Ar 7 is an aromatic compound selected from the group consisting of anthracene, naphthalene, diphenylanthracene, terphenyl, quaterphenyl, quinquephenyl, sexiphenyl, quinolinol, benzoquinolinol, acridinol, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxydiaryloxadiazole, hydroxydiarylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxybenzotriazole, hydroxy fluborane, bipyridyl, phenanthroline, phthalocyanine, porphyrin, and derivatives thereof; and the organic luminescent layer comprises at least one of an aromatic amine compound of formula (1) and an aromatic amine compound of formula (2): wherein: each of A, Ar 1 and Ar 2 is independently a substituted or unsubstituted C 6-60 aromatic group that does not contain a styryl group or an alkenyl group; at least one of A, Ar 1 and Ar 2 is a substituted or unsubstituted structure including at least three condensed aromatic rings; and p is an integer of 1 to 6; wherein: each of B, Ar 3 , Ar 4 , Ar 5 and Ar 6 is independently a substituted or unsubstituted C 6-60 aromatic group that does not include a styryl group or an alkenyl group; at least one of B, Ar 3 , Ar 4 , Ar 5 and Ar 6 comprises a substituted or unsubstituted structure including at least three condensed aromatic rings; each of q and r is independently an integer of 1 to 6.