Idemitsu Kosan Company, Limited

Seiko Instruments Inc

Mitsui Chemicals, Inc.

Takayasu Sado

Sayaka Mizutani

Tomoki Kato

Takahiro Fujiyama

Kazuki Nishimura

Mitsunori Ito

Tetsuya Inoue

Kiyoshi Ikeda

Makoto Kurihara

Katsunori Honma

Kumiko Gorai

Chishio Hosokawa

Masahiro Kawamura

Hirokatsu Ito

Yuichiro Kawamura

Hitoshi Kuma

Hiroyuki Saito

Yukitoshi Jinde

Norihiro Dejima

Kenichi Fukuoka

Nobuhiro Yabunouchi

Yoshiaki Takahashi

Emiko Kambe

Tetsuya Masuda

Kumiko Hibino

Fumio Okuda

Naofumi Yamauchi

Takahiko Ochi

Bunji Sawano

Hiroki Ishida

Yoshimitsu Tanabe

Kimiko Hibino

An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), Xto Xare a nitrogen atom or CR, and A is represented by a formula (2) below. In the formula (2), Lis s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Yis an oxygen atom, a sulfur atom or the like, and one of Xto Xis a carbon atom bonded to Lby a single bond and the rest of Xto Xare a nitrogen atom or CR.

Aromatic heterocyclic derivative, material for organic electroluminescent element, and organic electroluminescent element

A top emission organic EL device includes an anode, hole transporting zone, emitting layer, electron transporting zone, and cathode in this order. The hole transporting zone includes: a first layer interposed between the anode and the emitting layer; and a second layer interposed between the first layer and the emitting layer. The first layer contains a first compound and the second layer contains a second compound. A film thickness of the first layer and the second layer satisfies a formula (1) and (2), respectively. A hole mobility &#x3bc;of the first compound satisfies a formula (3) and a hole mobility &#x3bc;of the second compound satisfies a formula (4),100 nm&#x2264;1&#x2264;300 nm&#x2003;&#x2003;(1)1 nm&#x2264;2&#x2264;20 nm&#x2003;&#x2003;(2)1.0&#xd7;10[cm]&#x2264;&#x3bc;&#x2264;1.0&#xd7;10[cm]&#x2003;&#x2003;(3)1.0&#xd7;10[cm]&#x2264;&#x3bc;&#x2264;1.0&#xd7;10[cm]&#x2003;&#x2003;(4).

Top emission organic electroluminescent element, organic electroluminescent light emitting device, and electronic device

An aromatic amine derivative represented by formula (1): wherein R, R, R, L, Ar, Ar, k, m, and n are the same as defined in the specification, is useful as a material for an organic EL device and realizes an organic EL device with a high efficiency and a long lifetime even when driving it at a low voltage.

Aromatic amine derivative, and organic electroluminescent element using same

An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), Xto Xare a nitrogen atom or CR, and A is represented by a formula (2) below. In the formula (2), Lis s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Yis an oxygen atom, a sulfur atom or the like, and one of Xto Xis a carbon atom bonded to Lby a single bond and the rest of Xto Xare a nitrogen atom or CR. 

An aromatic amine derivative represented by formula (1): wherein HAr, Ar, L, L, and Lare as defined in the specification, is useful as a material for constituting an organic EL device and realizes an organic EL device having a high efficiency and a long lifetime even when driving at a low voltage.

A compound is represented by a formula (1) below. In the formula (1), Xto Xeach independently represent a carbon atom to be bonded to a group represented by the following formula (20), CRor a nitrogen atom. At least one of Xto Xis a carbon atom to be bonded to the group represented by the following formula (2). Ris each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or the like. 

Compound, organic electroluminescence device material, organic electroluminescence device and electronic device

Provided are an organic electroluminescence device having high current efficiency and a long lifetime, and a biscarbazole derivative for realizing the device. The biscarbazole derivative has a specific substituent. The organic EL device has a plurality of organic thin-film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin-film layers contains the biscarbazole derivative.

Biscarbazole derivatives and organic electroluminescence device employing the same

An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), Xto Xare a nitrogen atom or CR, and A is represented by a formula (2) below. In the formula (2), Lis s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Yis an oxygen atom, a sulfur atom or the like, and one of Xto Xis a carbon atom bonded to Lby a single bond and the rest of Xto Xare a nitrogen atom or CR 

An aromatic amine derivative represented by formula (1): wherein R, R, R, L, AR, Ar, k, m, and n are the same as defined in the specification, is useful as a material for an organic EL device and realizes an organic EL device with a high efficiency and a long lifetime even when driving it at a low voltage.

An organic electroluminescence device contains an anode and a cathode facing each other, and intervening therebetween at least two hole transporting layers and a light emitting layer sequentially, and one of the hole transporting layers contains a compound having a particular structure having a fluorene structure at the center thereof, and is not adjacent to the light emitting layer. The organic electroluminescence device has a hole transporting layer having an increased thickness, is capable of being controlled in the thickness of the optical film, and has an enhanced device capability.

Organic electroluminescence device

An organic EL device that has a high efficiency and a long service life, an electronic apparatus containing the organic EL device, and a compound capable of providing the organic EL device. The compound is specifically represented by the following general formula (1): wherein in the general formula (1), Arrepresents an organic group A represented by the following general formula (A-1); Arrepresents the organic group A or an organic group B represented by the following general formula (B-1); and Arrepresents the organic group B or an organic group C represented by the following general formula (C-1), provided that in the case where both Arand Arare the organic groups A, the organic groups A may be the same as or different from each other,   

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Sodegaura, Japan

Takayasu Sado