The invention relates to a bipolar organic material with a phosphorus oxygen functional group and a triarylated amine functional group. The general formula of the compound is shown in the description (Pn). The bipolar compound provided by the invention can be used as a main material of a triplet luminescent dye or a carrier transport material, has a triplet-state energy level, has the characteristics of high carrier transport capability and high stability, and can also transport an electron and a hole, so that the charge transfer balance of a luminance layer is guaranteed effectively, the brightness and the efficiency of an organic electroluminescence device are correspondingly improved, the service life of the organic electroluminescence device is prolonged, and the defects of low efficiency and short service life of the device at large current are overcome.