Hodogaya Chemical Co., Ltd.

Shinshu University

Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo

Other

Tokai Rubber Industries, Ltd.

Nippon Soda Co., Ltd.

Optc Co., Ltd.

Yoshio Taniguchi

Musubu Ichikawa

Shuichi Hayashi

Norimasa Yokoyama

Tetsuzo Miki

Toshiki Koyama

Makoto Nagaoka

Yasunori Taga

Hisayoshi Fujikawa

Chihaya Adachi

Shizuo Tokito

Koji Noda

Sadaharu Suga

Makoto Satsuki

Atsushi Miura

Akira Shinpo

Tomoyasu Saitou

Tetsuya Takeuchi

Naoaki Kabasawa

Shigeru Kusano

Hiroshi Suzuki

Shunji Mochiduki

Naohiro Tarumoto

Kentaro Yano

Ryo Minoshima

Masato Sugiyama

Fumio Matsui

Shinichi Matsuki

Syunzo Tashima

Toshihiko Shimotoso

Michifumi Nagawa

Hirofumi Mitekura

Hideaki Gondaira

Shingo Hibino

Hiroshi c/o Nippon Soda Co Ltd Suzuki

Hideaki c/o Chiba Plant Gondaira

The invention provides a light emitting layer host compound and an electron-blocking compound that have high excited triplet levels, and can completely confine the triplet excitons of phosphorescent material, for use as the material of a high-efficient organic electroluminescent device. The invention also provides a high-efficient, high-luminance organic electroluminescent device with the use of the compounds. The compound of the general formula (1) below has a triphenylsilyl group and a triarylamine structure, and the organic electroluminescent device includes a pair of electrodes and at least one organic layer interposed between the pair of electrodes, wherein the compound of the general formula (1) having a triphenylsilyl group and a triarylamine structure is used as constituent material of the at least one organic layer. 

Compound having triphenylsilyl group and triarylamine structure, and organic electroluminescent device

A compound having a benzotriazole ring structure and a formula (1): wherein Ar is a substituted or unsubstituted aromatic hydrocarbon group, aromatic heterocyclic group, or condensed polycyclic aromatic group; A and B are the same as or different from each other and each represent a hydrogen atom or a monovalent group of formula (2), provided that A and B are not simultaneously hydrogen atoms: wherein Rto Rare the same as or different and each represent a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a linear or branched alkyl group having 1 to 6 carbon atoms, aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or condensed polycyclic aromatic group; m is an integer of 0, 1 or 2; X represents a carbon atom or a nitrogen atom; when X is a nitrogen atom, the nitrogen atom does not have substituents or bonding groups of R, R, Rand R; and when m is 2, a plurality of R, R, R, Rand X each are the same or different.

Compound having benzotriazole ring structure and organic electroluminescent element

The invention provides an organic compound which shows an excellent electron-injecting/transporting performance, has a hole-blocking ability and shows a high stability as a film, that is, having excellent characteristics as a material for organic electroluminescent device having high efficiency and high durability; and provides an organic EL device comprising the compound and having high efficiency and high durability. The organic compound being a substituted bipyridyl compound represented by the general formula (1); 

Substituted bipyridyl compound and organic electroluminescent device

An object of the invention is to provide an organic compound having excellent characteristics as a material for highly efficient and highly durable organic EL devices, and also to provide a highly efficient and highly durable organic EL device. This invention relates to a compound represented by the general formula (1) having an oxadiazole ring structure bonded with an aromatic heterocycle, and to an organic electroluminescence device containing the compound: wherein Ar represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; A represents a substituted or unsubstituted aromatic heterocyclic group; and n represents an integer of 1 to 3.

Compound having oxadiazole ring structure bonded with aromatic heterocyclic ring and organic electroluminescent device

This invention relates to an arylamine compound having a molecular weight of 1,500 to 6,000 represented by formula (1), and to an organic electroluminescence device having a pair of electrodes and at least one organic layer sandwiched therebetween, wherein the arylamine compound of formula (1) is used as a constituting material of the at least one organic layer: wherein X represents a single bond, CH or CH, or N or NH; Arand Arare respectively the same and each represents a substituted or unsubstituted phenylene group; R, R, R, and Reach independently represents an aryl group, wherein the aryl group may be substituted by a diarylamine group in such a manner as to form a triphenylamine partial structure, and the aryl group at the terminal may be substituted, by repetition, by a diarylamino group in such a manner as to form a triphenylamine partial structure; m represents an integer of 0 to 2; and n represents 0 or 1.

Arylamine compound and organic electroluminescence device

The present invention relates to a compound having an oxadiazole ring structure having a substituted pyridyl group connected thereto, represented by the following general formula (1). According to the present invention, it becomes possible to provide an organic compound having excellent characteristic of high stability in a thin film state, and the emission efficiency and durability of conventional organic EL devices can be remarkably improved.

Compound having oxadiazole ring structure substituted with pyridyl group and organic electroluminescence device

An organic electroluminescence element has a layered structure on a surface of a transparent substrate. The layered structure comprises an organic material layer including a light-emitting organic material layer, an opaque electrode layer, an insulating layer, a metal layer and a resin film in order. The organic electroluminescence element is improved in durability because moisture is prevented from permeating into a light-emitting element.

Organic electroluminescence element, process for preparation of the same, and electrode film

Objects of the invention are to provide a compound of a single molecular species having excellent hole injection/transport property suitable for highly efficient and highly durable organic EL device and excellent amorphousness, and provide a highly efficient and highly durable organic EL device using the compound. This invention relates to an arylamine compound having a molecular weight of 1,500 to 6,000 represented by the following general formula (1), and to an organic electroluminescence device having a pair of electrodes and at least one organic layer sandwiched therebetween, wherein the compound is used as a constituting material of the at least one organic layer: wherein X represents a single bond, CH or CH, or N or NH; Arand Arare respectively the same and each represents a substituted or unsubstituted phenylene group, biphenylene group, or terphenylene group; R, R, R, and Reach independently represents an aryl group, wherein the aryl group may be substituted by a diarylamine group in such a manner as to form a triphenylamine partial structure, and the aryl group at the terminal may be substituted, by repetition, by a diarylamino group in such a manner as to form a triphenylamine-like partial structure; m represents an integer of 0 to 2; and n represents 0 or 1.

The present invention provides an arylamine compound having a molecular weight of from 1500 to 6000 represented by the general formula (1): According to the present invention, there can be provided an arylamine compound having excellent hole injection and transporting characteristics and being capable of forming a stable thin film. By using the compound, emission efficiency and durability of conventional organic EL devices can remarkably be improved.

Arylamine compound and organic electroluminescent device

Compound having oxadiazole ring structure substituted with pyridyl group, and organic electroluminescent device

4-Cyanocoumarin derivatives which have a distinct sensitivity to visible light, distinct luminescent ability, and satisfactory applicability for photochemical polymerization, dye lasers, and organic electroluminescent elements. Since most of the derivatives have a fluorescent maximum wavelength of 600 to 650 nm, particularly, 610 to 630 nm, they are extremely useful as luminescent agents for organic EL elements which emit visible light in a red-color region, and can be quite useful as luminescent agents in organic EL elements and laser-active substances in dye lasers, as well as luminous bodies as lighting sources for lighting devices, and information displays for visually displaying information.

4-cyanocoumarin derivatives and uses thereof

The present invention relates to an EL device which is driven with a lower voltage or power amount, which is superior in interface stability between layers in the device and which has a higher luminance as compared with the use of a conventional electrode, and is characterized in that in the EL device comprising a light emitting layer disposed as an essential layer between two electrodes facing each other, at least one of the electrodes includes a crystalline conductive film whose diffraction intensity ratio of (400)/(222) is 1.0 or more in X-ray diffraction by a &#x3b8;/2&#x3b8; method.

El device

The objects of the present invention are to provide semiconductor layers for obtaining solar cells having a relatively high energy conversion efficiency, solar cells using the same, and their production methods and uses; all of which are solved by providing semiconductor layers that are used in solar cells and constructed by semiconductor particle groups having a plurality of peaks in particle size distribution, solar cells using the same, and their production methods and uses.

Semiconductor layer, solar cell using it, and production methods and applications thereof

Organic semiconductor laser device

Growing community of inventors

Ueda, Japan

Yoshio Taniguchi