Rohm and Haas Electronic Materials Korea Ltd.

Dupont Specialty Materials Korea Ltd.

Kyung-Hoon Choi

Young-Jun Cho

Jae-Hoon Shim

Chi-Sik Kim

Doo-Hyeon Moon

Hong-Yeop Na

Sang-Hee Cho

Su-Hyun Lee

Kyoung-Jin Park

Ji-Song Jun

Seon-Woo Lee

Kyung-Joo Lee

Hee-Choon Ahn

Nam-Kyun Kim

Young-Kwang Kim

Tae-Jin Lee

Jin-Ri Hong

Hee-Ryong Kang

Bitnari Kim

Jeong-Eun Yang

Hong-Se Oh

Young-Mook Lim

Hyun-Ju Kang

Dong-Hyung Lee

Jeong-Hwan Jeon

Du-Yong Park

Hyo-Jung Lee

So-Mi Park

Hyun-Woo Kang

Yoo-Jin Doh

Hong-Yoep Na

The present disclosure relates to an organic electroluminescent device comprising a light-emitting layer and a hole transport zone. By comprising a combination of the specific light-emitting layer and the specific hole transport zone according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifespan characteristics.

Organic electroluminescent device

The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.

Multi-component host material and an organic electroluminescence device comprising the same

The present invention relates to an organic electroluminescent device comprising at least one light-emitting layer between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant; the host consists of multi-component host compounds; at least a first host compound of the multi-component host compounds is a specific bicarbazole derivative containing an aryl group, and a second host compound is a specific carbazole derivative including a nitrogen-containing heteroaryl group. According to the present invention, the organic electroluminescent device using the multi-component host compounds has a high efficiency and long lifespan compared with the conventional device using one component host compound.

Multi-component host material and organic electroluminescent device comprising the same

The present invention relates to an electron buffering material and an organic electroluminescent device comprising the same in an electron buffer layer. It is possible to provide an organic electroluminescent device having excellent luminous efficiency and lifespan characteristics by using the electron buffering material according to the present invention.

Electron buffering material and organic electroluminescent device comprising the same

The present invention relates to an electron transport material and an organic electroluminescent device comprising the material in an electron transport layer. The compounds according to the present invention as an organic electron transport material have faster electron transport property compared to a conventional electron transport material. Thus, a device comprising the compounds according to the present invention shows low driving voltage, high efficiency, and excellent lifespan property. Furthermore, the electron transport compounds have excellent color coordinate, and thus are effective in blue light-emitting.

Electron transport material and organic electroluminescent device comprising the same

The present invention relates to a plurality of host materials and an organic electroluminescent device comprising the same. By comprising a specific combination of a plurality of host compounds, the organic electroluminescent device according to the present invention provides excellent lifespan characteristics while maintaining high luminous efficiency.

Plurality of host materials and an organic electroluminescence device comprising the same

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Hwaseong, South Korea

Kyung-Hoon Choi