Kyushu University

Kyulux, Inc.

Samsung Display Co., Ltd.

Nippon Soda Co., Ltd.

Ricoh Company, Ltd.

Hodogaya Chemical Co., Ltd.

Takuma Yasuda

Chihaya Adachi

In Seob Park

Katsuyuki Shizu

Ryota Arai

Ryosuke Kondo

Yukio Fukushima

Hiroko Nomura

Yu Seok Yang

Yuuki Miyazaki

Yoshimasa Fujita

Masaki Numata

Inseob Park

Yu Hidaka

Woong Shin

Hiroshi Sumiya

Takehiro Takahashi

Nobutaka Akashi

Hajime Nakanotani

Shuri Sato

Kenichi Goushi

Hiromi Nakano

Tetsuya Nakagawa

Hiroki Uoyama

Seiichi Furukawa

Saeyoun Lee

Jun-Yun Kim

Hyukgi Min

JiYoung Lee

Takuro Nishimoto

Kazunori Togashi

Ryuhei Furue

Hayato Kakizoe

Yuji Suzaki

Katsunori Tanaka

Asuka Yoshizaki

Yasuhiro Miyashita

Hiroshi Ookuma

Junichi Nishide

Sae Youn Lee

Hideaki Komiyama

Takahiro To

Jyunichi Nishide

Yang Yu Seok

Hiroyuki Mieno

Kyohei Matsuo

Jong Uk Kim

Narumi Sato

Yasuhiko Ashikari

Hiroyuki Ishihara

A light emitting device of an embodiment includes a first electrode, a second electrode facing the first electrode, and multiple organic layers disposed between the first electrode and the second electrode. At least one among the organic layers includes a fused polycyclic compound represented by Formula 1 below, thereby showing improved emission efficiency.

Light emitting device and fused polycyclic compound for light emitting device

An organic electroluminescence device exhibiting high light emission efficiency is provided, which includes a first electrode, a second electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer may include a compound represented by Formula 1.

Organic electroluminescence device and compound for organic electroluminescence device

A compound represented by formula (I). In formula (I), each L independently represents a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group, n indicates the number of L groups, and is either 1 or 2, each Q independently represents a substituted or unsubstituted 3,6-di-t-butyl-9H-carbazol-9-yl group, a substituted or unsubstituted 3,6-diphenyl-9H-carbazol-9-yl group, or a substituted or unsubstituted 3-phenyl-6-t-butyl-9H-carbazol-9-yl group, and in indicates the number of Q groups, and has a value of 5−n.

Benzonitrile derivative, light-emitting material, and light-emitting element using same

An organic material represented by General Formula (1): where, in General Formula (1), Ris an alkyl group having 6 carbon atoms or more but 20 carbon atoms or less; n is an integer of from 1 through 3; X1 to X4 are each a hydrogen atom or a fluorine atom; and Z is a compound represented by General Formula (2), (3), or (4) below: where, in General Formulae (2) to (4), R, R, and Rare each an alkyl group having 6 carbon atoms or more but 20 carbon atoms or less; and Y is an oxygen atom or a sulfur atom.

Organic material and photoelectric conversion element

An organic electroluminescence device in which a polycyclic compound including an electron donor and an electron acceptor is included in an emission layer is provided. The electron donor contains an acridine derivative or a dibenzo-azasiline derivative, and the electron acceptor contains B as a ring-forming atom, O or S directly bonded to B, and a heterocyclic group in which three or five hexagonal rings are condensed. Accordingly, an organic electroluminescence device having high efficiency may be achieved.

Organic electroluminescence device and polycyclic compound for organic electroluminescence device

A compound that emits fluorescence and delayed fluorescence is provided as a material for an organic electroluminescent device of high efficiency, and an organic photoluminescent device and an organic electroluminescent device of high efficiency and high luminance are provided using this compound. The compound of general formula (1) having a tetraazatriphenylene ring structure is used as a constituent material of at least one organic layer in an organic electroluminescent device that includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes. 

Compound having tetraazatriphenylene ring structure, light-emitting material, and organic electroluminescent device

Provided are: a dicyano N-heterocyclic compound represented by formula (I) (in the formula, Rrepresents an electron-donating group, and n represents the number of repetitions of the content in brackets and is 0 or 1), the compound having exceptional heat resistance and light emission characteristics; a light-emitting material; and a light-emitting element in which the same is used. 

Dicyano N-heterocyclic compound, light-emitting material, and light-emitting element in which same is used

A compound represented by the general formula (11) is useful as a light-emitting material. R, R, Rand Rrepresent a group represented by the general formula (2), Rto Rrepresent a hydrogen atom or a substituent, and Lrepresents a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group. 

Light-emitting material, organic light-emitting device, and compound

A compound that emits fluorescence and delayed fluorescence is provided as a material for an organic electroluminescent device of high efficiency, and an organic photoluminescent device and an organic electroluminescent device of high efficiency and high luminance are provided using this compound. The spiro compound of a general formula (1) having an azafluorene ring structure is used as a constituent material of at least one organic layer in an organic electroluminescent device that includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes. 

Spiro compound having azafluorene ring structure, light-emitting material, and organic electroluminescent device

A polycyclic compound and an organic electroluminescence device including the same. The polycyclic compound according to an example embodiment is represented by the following Formula 1.  

Polycyclic compound and organic electroluminescence device including the same

A nitrogen-containing compound and an organic electroluminescence device including the same, the nitrogen-containing compound being represented by the following Formula 1: 

Nitrogen-containing compound and organic electroluminescence device including the same

To provide an organic compound represented by the following general formula (1): where Ris a C2-C6 alkyl group or a hydrogen atom, Rand R, which may be identical or different, are each a C2-C12 alkyl group, and Rand R, which may be identical or different, are each a C6-C12 alkyl group that may be a branched chain or a straight chain.

Organic compound and photoelectric conversion element

A compound represented by formula (I) or formula (II):  

Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine

A compound represented by formula (I) or formula (1I):  

A high light emission efficiency can be achieved by the use of a compound represented by the general formula (1) as a host material or a light-emitting material of a light-emitting layer of an organic light-emitting device. Xto Xeach independently represent C or BH constituting carborane, provided that among Xto X, the bonding positions to A and D each represent C, and the other thereof each represent BH; A represents an acceptor bonded to the carborane through an aromatic ring or a heteroaromatic ring; and D represents a donor bonded to the carborane through an aromatic ring or a heteroaromatic ring. 

Organic light-emitting device, host material, light-emitting material, and compound

Growing community of inventors

Fukuoka, Japan

Takuma Yasuda