An electron transport layer includes an electron transport material (host material) and a carrier transportable dopant. The carrier transportable dopant is contained 1 % by weight to 50 % by weight, preferably 1 % by weight to 10 % by weight for the electron transport material. A compound having a carbazole group or a derivative of the compound is employed as the carrier transportable dopant. A complex of an 8-hydroxyquinoline derivative and metal is employed as the electron transport material.
电子传输层包括电子传输材料(主材料)和载流子传输掺杂剂。载流子可迁移掺杂剂的含量为电子传输材料重量的 1%至 50%,最好为电子传输材料重量的 1%至 10%。载流子可迁移掺杂剂采用具有
咔唑基团的化合物或该化合物的衍
生物。采用
8-羟基喹啉衍
生物和
金属的复合物作为电子传输材料。