abstract |
The invention discloses a benzospirofluorene compound and its application in OLEDs. The compound of the invention has a spirofluorene structure as a central skeleton and can be used as a light-emitting layer or an electron transport layer material for OLED devices. The compound of the present invention is used as a functional material in an OLED, which can improve the luminous efficiency of the device and prolong the service life. |