申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US20160164008A1
公开(公告)日:2016-06-09
A composition is provided containing a first phosphorescent compound (DB) having an emission spectrum whose maximum peak wavelength is from 400 nm to less than 480 nm and having a dendron and a second phosphorescent compound (DGR) having an emission spectrum whose maximum peak wavelength is from 480 nm to less than 680 nm and having a dendron.