| abstract |
The invention discloses an electron transport material of general formula I, which can be used as an electron transport layer of an organic electroluminescence device in a display device. The electron transport material of the invention has the parent structure of diversified condensed heterocycles, the bond energy between atoms is high, the thermal stability is good, the solid state stacking between molecules is favorable, and the transition ability of electrons is strong, and is used as an electron transport layer material The use can effectively reduce the driving voltage of the organic electroluminescence device, improve the current efficiency of the organic electroluminescence device, and prolong its service life. |