The present invention provides an electron injection material, as shown in formula (I); wherein, the R 1 with R 2 Each independently is a substituted or unsubstituted alkylamino group, a substituted or unsubstituted heterocyclic group, and a derivative group thereof. Compared with the prior art, the adamantane organic base provided by the present invention takes amantadine as the core, and at the same time connects a structure capable of transporting electrons as an electron injection material, which can form a hydrogen bond with the electron transport material to achieve high electron density. Injection ability, it does not need to consider ionization energy, and the synthesis of the electron injection material is simple, the molecule is stable, while ensuring the formation of hydrogen bonds, the molecule also has flexible branched chains, which is convenient to make inkjet materials, not only can be used for direct vapor deposition Coating can also be used to make devices in the form of inkjet, which helps to reduce costs.