組成物およびそれを用いた発光素子

摘要

A composition comprising a phosphorescent compound having an emission spectrum the maximum peak wavelength of which is between 400 nm or more and less than 480 nm and having a dendron (DB) and a phosphorescent compound having an emission spectrum the maximum peak wavelength of which is between 480 nm or more and less than 680 nm and having a dendron (DGR).