申请人:Konno Hideo
公开号:US20120211707A1
公开(公告)日:2012-08-23
A metal complex composition comprising a metal complex including a structure represented by the following formula (1) and a charge transport material,
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.