The electron transport layer contained in the organic EL device according to the present invention contains at least a first organic compound and a second organic compound. The first organic compound possesses higher electron mobility than the second organic compound, and the second organic compound possesses a higher glass transition temperature than the first organic compound. For this reason, the organic EL device according to the present invention has a long life and a high luminous efficiency. The first organic compound is preferably a silole derivative, and the second organic compound is preferably a quinolinolate metal complex.
根据本发明,有机电致发光器件中的电子传输层至少包含第一种有机化合物和第二种有机化合物。第一种有机化合物的电子迁移率高于第二种有机化合物,第二种有机化合物的
玻璃化温度高于第一种有机化合物。因此,本发明的有机电致发光器件寿命长、发光效率高。第一种有机化合物最好是
硅烷衍
生物,第二种有机化合物最好是
喹啉酸
金属复合物。