Organic electroluminescence device

An organic electroluminescence device comprising:

• at least
• an anode electrode;
• a hole transport layer;
• a light emitting layer;
• an electron transport layer;
• a cathode electrode;
• and
• a capping layer in the stated order,
• wherein the capping layer includes a material having an extinction coefficient of not less than 0.3 at wavelengths of from 400 nm to 410 nm and an absorbance of not less than 0.2 at wavelengths of from 400 nm to 410 nm in the absorption spectrum of a concentration of 10−5 mol/l,
• wherein the capping layer includes an arylamine compound represented by a following general formula (1):
• where, in the general formula (1), Ar1, Ar2, Ar3, and Ar4 may be the same or different from each other and each represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group, n represents an integer of 0 to 4, wherein at least one of Ar1, Ar2, Ar3, and Ar4 is a monovalent group represented by a following structural formula (B) or has the monovalent group as a substituent;
• where, in the structural formula (B), R1, R2, R3, and R4 may be the same or different from each other, be a linking group, a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, a linear or branched alkyl group having 1 to 6 carbon atoms, which may have a substituent, a cycloalkyl group having 5 to 10 carbon atoms, which may have a substituent, a linear or branched alkenyl group having 2 to 6 carbon atoms, which may have a substituent, a linear or branched alkyloxy group having 1 to 6 carbon atoms, which may have a substituent, a cycloalkyloxy group having 5 to 10 carbon atoms, which may have a substituent, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted condensed polycyclic aromatic group, or a substituted or unsubstituted aryloxy group, wherein R1, R2, R3, and R4 may be bonded to each other to form a ring via a single bond, a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or N—Ar8, where Ar8 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group, X represents a carbon atom or a nitrogen atom, Y represents a carbon atom, an oxygen atom, a sulfur atom, or a nitrogen atom, Ar5 represents a linking group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group, wherein Ar6 and Ar7 may be the same or different from each other, be a linking group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group, wherein Y does not have Ar7 in the case that Y is an oxygen atom or a sulfur atom, wherein any one of Ar5, Ar6, and Ar7 is a linking group or a substituent in the case that X and Y are each a nitrogen atom, wherein X does not have Ar6 in the case that X is a nitrogen atom and Y is a carbon atom, wherein Ar8 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group, wherein only one of R1, R2, R3, R4, Ar5, Ar6, and Ar7 is a linking group, and a case that X is a nitrogen atom and Y is an oxygen atom or sulfur atom is excluded;
• and
• wherein the electron transport layer includes a following compound (3-4):