Provided is a composite material which makes it possible to provide a light-emitting element having at least one of the following characteristics by applying the composite material to the light-emitting element: low voltage driving, high emission efficiency, and a long life (high reliability). The composite material includes a hydrocarbon compound and an inorganic compound which exhibits an electron-accepting property with respect to the hydrocarbon compound. The hydrocarbon compound has a molecular weight of greater than or equal to 400 and less than or equal to 2000, where one or more aryl groups are bonded to a fluorene unit.
提供的是一种复合材料,通过将该复合材料应用于发光元件,可以实现以下至少一种特性的发光元件:低电压驱动、高发射效率和长寿命(高可靠性)。该复合材料包括一个烃类化合物和一个无机化合物,该无机化合物对于烃类化合物表现出接受电子的性质。烃类化合物的分子量大于或等于400且小于或等于2000,其中一个或多个芳基基团与
芴单元结合。