Mitsubishi Chemical Corporation

Pioneer Corporation

Masayo Fugono

Masayoshi Yabe

Masako Takeuchi

Hideki Sato

Koichiro Iida

Tomoyuki Ogata

Yoshiharu Sato

Takeshi Shioya

The present invention provides an organic electroluminescent device exhibiting a long life, a high luminance, and a high efficiency. An organic electroluminescent device comprising on a substrate an anode, a hole transport layer, an organic light-emitting layer, and a cathode, wherein the organic light-emitting layer contains an organic compound having a pyridine ring, a pyrazine ring, or a triazine ring as a partial structure and the hole transport layer contains a monoamine compound represented by the following formula (I): wherein Rto Rrepresent a hydrogen atom, an aryl group, or an alkyl group; Rto Rmay be the same or different from each other; and Rto Rmay further have an aryl group or an alkyl group as a substituent in the case where Rto Rare an aryl group or an alkyl group.

Monoamine compound, charge-transporting material, and organic electroluminescent device

An organic compound and a charge-transporting material which are excellent in both a hole-transporting property and an electron-transporting property and have excellent electrical oxidation/reduction durability and a high triplet excitation level are provided, and an organic electroluminescent device which uses this organic compound and has high luminous efficiency and high driving stability and long lifetime is provided, wherein the organic compound has two or more partial structures represented by the following Formula (I):  

Organic compound containing at least two carbazolyl-substituted phenyl structures; charge-transporting material and organic el element containing the compound

An object of the invention is to provide a charge transporting material having an excellent heat resistance, excellent filming properties, an excellent charge transporting ability, and excellent light-emitting characteristics and, also, to provide an organic electroluminescent element providing a high luminance and a highly luminous efficiency and having a long life. The invention relates to a charge transporting material comprising a compound having within the molecule two or more pyridine rings substituted at 2-, 4- and 6-positions thereof, which rings do not substantially conjugate each other (provided that the 3- and 5-positions of the pyridine rings may be substituted) and an organic electroluminescent element using the charge transporting material.

Compound, charge transporting material and organic electroluminescent element

An organic electroluminescent device is disclosed, comprising a substrate having thereon a light-emitting layer sandwiched by an anode and a cathode, wherein the light-emitting layer comprises at least:

Growing community of inventors

Kanagawa, Japan

Masayo Fugono