Organic electroluminescent device containing dithiafulvene derivative

An organic electroluminescent device comprising a hole-transporting layer and a luminescent layer, optionally in combination with a layer selected from the group consisting of a hole-injecting layer, an electron-injecting layer and an electron-transporting layer, sandwiched between an anode and a cathode, in which a dithiaflilvene derivative represented by the following Formula (1) is contained at least in one of said hole-injecting layer and said hole-transporting layer:

• wherein R1 and R2 each independently represent an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group;
• R3 to R6 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkylthio group having 1 to 6 carbon atoms, a substituted or unsubstituted arylthio group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group;
• when R3 to R6 are an aryl group or a heterocyclic group and are adjacent to each other, they may have a structure in which they are condensed to each other;
• and when R3 to R6 are an alkenyl group or an alkylthio group and are adjacent to each other, they may be bonded to each other.