Organic compound and application thereof in organic electroluminescent device

The invention provides an organic compound and an application thereof in an organic electroluminescent device, the organic compound has high triplet state energy level, small delta EST, high photoluminescence efficiency and high glass transition temperature, can realize effective separation of HOMO energy level and LUMO energy level, has good hole transport performance, and can be used in organic electroluminescent devices. Good electron transmission performance is achieved, and balanced charge transmission can be achieved. The compound has better morphological stability and excellent film stability in an electroluminescent device, is beneficial to the service life of a corresponding device, and is beneficial to improving the performance and luminous efficiency of an OLED (Organic Light Emitting Diode) device. 本发明提供一种有机化合物及其在有机电致发光器件中的应用，本发明的有机化合物具有高的三线态能级、较小的ΔEST、高的光致发光效率和高的玻璃态转变温度，能够实现HOMO能级和LUMO能级的有效分离，既具有良好的空穴传输性能，也具有良好的电子传输性能，能够实现平衡的电荷传输。在电致发光器件中具有更好的形态稳定性和优异的薄膜稳定性，对相应的器件寿命有利，有利于提升OLED器件的性能和发光效率。