The present invention discloses a delayed fluorescence material having general formula (1), and an organic EL device using the material as delayed fluorescence material of emitting layer or phosphorescent light emitting host of emitting layer can display excellent performance.
wherein W independently represents an oxygen atom, a sulfur atom and a selenium atom, R1 to R9 are the same definition as described in the present invention.
本发明公开了一种具有通式(1)的延迟荧光材料,使用该材料作为发光层的延迟荧光材料或发光层的
磷光发光宿主的有机电致发光器件可以显示出优异的性能。
其中 W 独立地代表氧原子、
硫原子和
硒原子,R1 至 R9 的定义与本发明所述相同。