A high-efficiency, high-durability organic electroluminescent device, particularly a phosphorescent organic electroluminescent device is provided by using an organic compound of excellent characteristics that exhibits excellent hole-injecting/transporting performance and has high triplet exciton confining capability with an electron blocking ability, and that has high stability in the thin-film state and high luminous efficiency.
The organic electroluminescent device includes a pair of electrodes, and a plurality of organic layers sandwiched between the pair of electrodes and including a phosphorescent light-emitting material-containing light emitting layer and a hole transport layer, wherein a compound of the following general formula (1) having a carbazole ring structure is used as a constituent material of the hole transport layer.
使用具有出色特性的有机化合物作为空穴注入/输运性能出色且具有高三重激子限制能力和电子阻挡能力的有机
磷光电致发光器件,从而提供高效、高耐久性的有机电致发光器件。该有机化合物在薄膜状态下具有高稳定性和高发光效率。该有机电致发光器件包括一对电极,以及夹在电极对之间的多个有机层,包括含有
磷光发射材料的发光层和空穴输运层,其中使用具有
咔唑环结构的以下通式(1)化合物作为空穴输运层的组成材料。