Provided is an organic EL device having high efficiency and high driving stability while being driven at a low voltage. The organic electroluminescent device includes one or more light-emitting layers between an anode and a cathode opposite to each other. At least one of the light-emitting layers contains a host material and a light-emitting dopant, and (i) a first host formed of an indolocarbazole compound having one or two indolocarbazole rings, and (ii) a second host formed of a carbazole compound having a plurality of carbazole rings and having a bond structure represented by the following general formula (3) are used as the host material.
本发明提供了一种有机电致发光器件,在低电压驱动下具有高效率和高驱动稳定性。该有机电致发光器件包括阳极和阴极之间相对的一个或多个发光层。至少其中一个发光层包含宿主材料和发光掺杂剂,(i) 由具有一个或两个
吲哚咔唑环的
吲哚咔唑化合物形成的第一宿主材料,以及 (ii) 由具有多个
咔唑环且具有以下通式 (3) 所表示的键结构的
咔唑化合物形成的第二宿主材料被用作宿主材料。