Samsung Display Co., Ltd.

Kyushu University

Hokkaido University

Samsung Displayco., Ltd.

Nobutaka Akashi

Hiroaki Itoi

Naoya Sakamoto

Hiromi Nakano

Junta Fuchiwaki

Hirokazu Kuwabara

Toshiyuki Matsuura

Ryuhei Furue

Shuri Sato

Hideo Miyake

Ichinori Takada

Takuma Yasuda

Masatsugu Ueno

Xiulan Jin

Yoshimasa Fujita

Koushin Matsuoka

Asami Sakamoto

Masako Kato

Atsushi Kobayashi

Hiroki Ohara

Akinori Yamatani

Yuji Suzaki

Ikuo Sasaki

Inseob Park

JiYoung Lee

Kotaro Shimada

A nitrogen-containing compound represented by Formula 1 below may be included in a light emitting layer of an organic electroluminescence device. The resulting organic electroluminescence device may exhibit improved light emitting efficiency and may emit deep blue light: wherein, Xto Xare each independently CR, CRor N, at least one of Xto Xis N, at least one of Xto Xis CR, and Ris represented by Formula 2 below:

Nitrogen-containing compound and organic electroluminescence device including the same

Provided is an organic electroluminescence device that includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The emission layer includes a polycyclic compound represented by Formula 1, and thus the organic electroluminescence device exhibits high luminous efficiency.

Organic electroluminescence device and polycyclic compound for organic electroluminescence device

An organic electroluminescence device including a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region, wherein the hole transport region includes a first heterocyclic compound including 1 to 3 structures derived from a compound represented by Formula 1 below, and the emission layer includes a second heterocyclic compound including 1 or 2 structures derived from a compound represented by Formula 1.

Organic electroluminescence device

An organic electroluminescence device of one or more embodiments includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer and a second electrode disposed on the electron transport region, wherein the emission layer includes a polycyclic compound represented by Formula 1, thereby showing high emission efficiency: wherein Y is O or S.

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

An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and a plurality of functional layers disposed between the first electrode and the second electrode, wherein at least one functional layer of the plurality of functional layers includes a polycyclic compound represented by Formula 1, thereby showing excellent light emitting efficiency in a short wavelength region:

An organic electroluminescence device including a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a compound represented by Formula 1 to achieve high efficiency and an improved efficiency drop in a deep blue emission wavelength region: 

Organic electroluminescence device and compound for organic electroluminescence device

An organic electroluminescence device having high luminous efficiency includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region, wherein the emission layer includes a polycyclic compound represented by Formula 1.

An organic electroluminescence device and a polycyclic compound, the device including a first electrode; a hole transport region on the first electrode; an emission layer on the hole transport region; an electron transport region on the emission layer; and a second electrode on the electron transport region, wherein the emission layer includes a polycyclic compound represented by the following Formula 1: 

Provided are an aromatic compound enhancing emission efficiency of blue light emitting region and an organic electroluminescence device including the same. The aromatic compound according to an embodiment of the inventive concept is represented by Formula 1, and more details about the constituents are provided in the disclosure. 

Aromatic compound and organic electroluminescence device including the same

A material for an organic electroluminescent device having high emission efficiency and long life and an organic electroluminescent device including the same. The material for an organic electroluminescent device is represented by the following Formula 1. 

Material for organic electroluminescent device and organic electroluminescent device including the same

Provided are a compound for thermally activated delayed fluorescence having a molecular aspect ratio of 1.5 or more, represented by the following Formula 1 and an organic electroluminescence device including the same in an emission layer. The organic electroluminescence device includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. 

Compound for thermally activated delayed fluorescence and organic electroluminescence device including the same

A polycyclic compound may be represented by Formula 1 below. The polycyclic compound may improve the light emitting efficiency of a blue light emitting region, and an organic electroluminescence device including the polycyclic compound may have improved blue light emission, high external quantum efficiency, and long life. The polycyclic compound may be used as a thermally activated delayed fluorescence material, which emits blue light, to improve the blue light emitting efficiency of the organic electroluminescence device. 

Polycyclic compound and organic electroluminescence device including the same

A heterocyclic compound is represented by Formula 1 and has an absolute value of a difference between a singlet energy level and a triplet energy level of about 0.2 eV or less: wherein in Formula 1, at least one of Rto Ris represented by Formula 2. 

Heterocyclic compound and organic electroluminescence device including the same

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.  

Growing community of inventors

Yokohama, Japan

Nobutaka Akashi