Organic electroluminescence materials, a luminescent device and a manufacturing method of the device

Organic electroluminescence materials are disclosed the general formula of which is shown as a formula (I), wherein Ar is electron-withdrawing aryl, Ar to Ar are electron donating aryl separately, and R1 to R4 are hydrogen , C1-C20 alkyl or C1-C20 alkoxy separately. Electron donors and electron acceptors are connected through conjugate units in the materials so that thermal activation delayed fluorescence performance of the materials can be ensured and the materials are processable through solution methods. In addition, the invention also provides an organic electroluminescence device comprising the organic electroluminescence materials and a preparing method thereof. The device is good in optical performance, and is processable through solution methods and simple and convenient in preparing process. 种有机电致发光材料，其结构式如式(Ⅰ)，其中，Ar为吸电子芳基，Ar～Ar均为供电子芳基，R～R均为氢原子基、含1～20个碳原子的烷基或含1～20个碳原子的烷氧基。上述有机电致发光材料将电子给体和电子受体通过共轭单元连接，保证了有机电致发光材料的热活化延迟荧光性能，同时具备可溶液法加工的性能。此外本发明还提供含上述有机电致发光材料的有机电致发光器件及其制备方法，该器件光学性能优良，采用可溶液法加工，制备程序简便。