Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.

Yan Sui

Shibo Wang

Jianhua Cao

Ruimao Hua

Zhe Shao

Minhui Jia

Jianchuan Zhang

Weizhuang He

Liang Dong

There is provided an imidazole derivative, wherein the structural formula of the imidazole derivative is as represented by formula I: There is further provided a material containing the imidazole derivative and an organic light-emitting device containing the imidazole derivative. The imidazole derivative has an excellent carrier transport capacity, and the organic light-emitting device produced by using the material has obviously reduced starting voltage and improved luminous efficiency and luminance; and due to the features such as relatively good film-forming performance and simple material synthesis and purification methods which are applicable to mass production, the imidazole derivative is an ideal option for an electron transport material of organic light-emitting devices.

Imidazole derivative, material and organic light-emitting device comprising the same

The present invention relates to an organic electroluminescent material, an organic electroluminescent device, and a method for preparing the organic electroluminescent device. Due to comprising an organic compound A with 3.0 eV&#x3e;ET&#x2265;2.0 eV and a compound B of M(LA)x(LB)y(LC)z, the organic electroluminescent material of the present invention has the advantages of an increased luminescence lifetime and/or a reduced operating voltage on the basis of maintaining other electronic properties at a certain level.

Metal complex organic electroluminescent material and organic electroluminescent device

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Hebei, China

Yan Sui