| abstract |
The present invention provides a copper complex having a longer emission intensity than conventional copper complexes. A copper complex represented by a composition formula (1): (Cu + ) (L 1 ) a (L 2 ) b (L 3 ) c (X 1 ) d (L 1 is arranged on the same Cu +) . a position capable phosphorus atom and 3 or 4 having molecular atoms selected from nitrogen atom in good nitrogen-containing five-membered ring which may have a substituent as neutral atoms, the same having the L 1 two or more atoms of capable of coordinating neutral atoms to Cu + is phosphorus atom, one or more selected from the group consisting of the phosphorus atoms are not bonded sp 3 carbon atoms .L 2 and L 3 is a molecule having an atom or ion capable of coordinating with Cu + selected from a phosphorus atom, a nitrogen atom, an oxygen atom, a sulfur atom, an arsenic atom, an oxygen anion and a sulfur anion, X 1 is an anion, Is a number greater than 0.5, and b, c, and d are numbers greater than or equal to 0). [Selection figure] None |