Dyden Corporation

Kyushu Electric Power Co., Inc.

Daiden Co., Ltd

Joled Inc.

Mitsuharu Noto

Yasuyuki Goto

Masataka Watanabe

Izumi Maki

Masanobu Kotsubo

Tsuyoshi Hayashida

Kenji Okumoto

Gosuke Sakamoto

Masaomi Shibata

Masanao Era

Izumi Kakinoki

Tomoko Fukushima

Tomoko Matoba

An organic electron transport material, which includes a phosphine oxide derivative represented by the following Formula (1):  Rrepresents an atomic group which has one or more of either or both of aryl and heteroaryl groups and may have one or more phosphine oxide groups, Rto Reach independently represent an atom or an atomic group selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a nitro group, a carboxyl group, a formyl group, a carbonyl group, an alkoxycarbonyl group, and a trifluoromethyl group.

Organic electron transport material and organic electroluminescent element using same

An organic electron transport material, which includes a phosphine oxide derivative represented by the following Formula (1): 

An organic electroluminescent element comprising an anode, a cathode and a plurality of organic compound layers sandwiched between the anode and cathode, the organic compound layers including: a hole-transporting layer made of an organic compound insoluble in alcohols; and an electron-transporting layer formed on the hole-transporting layer by a wet method, the electron-transporting layer being made of a phosphorus-containing organic compound soluble in the alcohols.

Organic electroluminescent element and manufacturing method thereof, and phosphorus-containing organic compound and manufacturing method thereof

The present invention is to provide a method of favorably forming an organic EL device with the inverted structure by the wet process. On that account, an organic EL device includes a cathode, an electron injection layer, a light emitting layer, a hole transport layer, a hole injection layer, an anode are formed in this order on a substrate. The electron injection layer is formed by applying ink between banks and drying the ink. The ink is formed by dissolving a polymer compound having an organic phosphine oxide skeleton in an alcohol solvent. The light emitting layer is formed by applying ink between components of the bank and the drying the ink. The ink is formed by dissolving material for light emitting layer such as polyphenylene vinylene (PPV) derivative or polyfluorene derivative in a nonpolar solvent.

Organic EL element and method for producing same

There is provided an electroluminescence device capable of causing an inorganic compound to emit light at a direct current voltage (low voltage), and whose luminescent color can be changed by dispersing the inorganic compound in an organic compound layer as an emissive layer. There is provided an electroluminescence device for emitting light through recombination of a hole injected from an anode and an electron injected from a cathode, wherein a single organic compound layer or plural organic compound layers are provided between the anode and the cathode, and an inorganic compound is dispersed in at least one layer of the organic compound layers.

Electroluminescence device

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Kurume, Japan

Mitsuharu Noto