| abstract |
A metal complex composition comprising a metal complex including a structure represented by the following formula (1) and a charge transport material, n n n n n n n n n n wherein in the formula (1), R a represents an alkyl group having 2 to 30 carbon atoms, and R 1 , R 2 , R 3 and R 4 each independently represent a hydrogen atom, an alkyl group having 1 to 30 carbon atoms that may have a substituent, or the like, provided that adjacent groups among R 1 , R 2 , R 3 and R 4 may be bonded to each other to form a ring structure. |