| abstract |
The invention provides an organic electroluminescence material containing germanium element and an organic light-emitting device, belonging to the technical field of organic photoelectric materials. The organic electroluminescent material structure provided by the present invention contains the structure of triphenylgermanium, which will make the triplet state energy level of the compound higher, and in addition, the inclusion of fluorene groups can further increase the triplet state energy level, between HOMO and LOMO The energy barrier is larger, which is more conducive to use as a blue light-emitting material; the glass transition temperature is also higher. In addition, triphenylgermanium is a large non-planar group, and the fluorene group is a twisted rigid group. The π-π stacking effect between molecules can be avoided, the compound is not easy to crystallize, and the aggregation and quenching of excitons in the crystallization area is avoided. Compared with the prior art, when it is applied to an organic light-emitting device, especially as a light-emitting layer, it has a relatively high luminous efficiency and a longer service life. |