| abstract |
The present invention discloses an organic electroluminescent compound and its application. The organic electroluminescent compound has the structure shown in formula I: , wherein Ar 1 and Ar 2 each independently represent an aromatic ring system with C 6 -C 60 or a heteroaromatic ring system with C 6 -C 60 . A hole transport layer for an OLED device, the hole transport layer comprising the above-mentioned organic electroluminescent compound. An OLED device, the OLED device includes an anode, a cathode and at least one organic thin film layer between the anode and the cathode; the organic thin film layer includes a hole transport layer, and also includes a hole injection layer, Any one or a combination of at least two of the electron blocking layer, hole blocking layer, light-emitting layer, electron transport layer and electron injection layer; the hole transport layer is the above hole transport layer for OLED devices. The organic electroluminescent compound of the present invention has good hole transport performance and stability, and can be used for manufacturing OLED devices with relatively high working life. |