Patent ID: 7914909

Claim:
An organic electroluminescent device comprising: an anode and a cathode; and a layer comprising an organic compound interposed between the anode and the cathode, wherein the layer contains at least one organic germanium compound having two or more fluorenyl groups per one germanium atom, wherein the organic germanium compound comprises a compound represented by the general formula [1]: wherein R 1 , R 2 , R 3 , and R 4 each represent, independently of one another, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthalenyl group, or a substituted or unsubstituted fluorenyl group; B 1 , B 2 , B 3 , and B 4 each represent, independently of one another, a linear or branched alkyl group having 1 to 20 carbon atoms; and 1 represents an integer of 1 to 4.