Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Korea Institute of Science and Technology

Lg Chem, Ltd

Korea University Research and Business Foundation

O Ok Park

Jong Hyeok Park

Jae Young Choi

Young Chul Kim

Jai Kyeong Kim

Seon Mi Yoon

Sang Hyuk Im

Dong Kee Yi

Jae-Woong Yu

Hong Kyoon Choi

Mun Ho Kim

Jaechol Lee

Duck Jong Suh

Hangken Lee

Han Sol Cho

Dong Hwan Wang

Ji Hye Jeon

Seok Hwan Lee

Jin Teak Hwang

Yong Taik Lim

Byung Doo Chin

Provided are a graphene-based compound, a preparation method thereof, a single-phase composition for preparing a graphene-based compound, and a graphene quantum dot. Specifically, provided are a graphene-based compound prepared from a single-phase composition for preparing a graphene-based compound including hydrocarbyl amine, a hydroxyl group-containing carbon source, and an acid, a preparation method thereof, a single-phase composition for preparing a graphene-based compound, and a graphene quantum dot.

Graphene-based compound, preparation method thereof, and single-phase composition for preparing graphene-based compound and graphene quantum dot

The present specification provides a photoactive layer including an electron accepting material and an electron donating material, an organic photovoltaic cell including the same, and a method of manufacturing the organic photovoltaic cell, which includes treating the electron accepting material and the electron donating material by a non-solvent.

Active layer, organic photovoltaic cell comprising the same and manufacturing method thereof

Provided is a transparent carbon nanotube (CNT) electrode comprising a net-like (i.e., net-shaped) CNT thin film and a method for preparing the same. More specifically, a transparent CNT electrode comprises a transparent substrate and a net-shaped CNT thin film formed on the transparent substrate, and a method for preparing a transparent CNT electrode, comprising forming a thin film using particulate materials and CNTs, and then removing the particulate materials to form a net-shaped CNT thin film. The transparent CNT electrode exhibits excellent electrical conductivity while maintaining high light transmittance. Therefore, the transparent CNT electrode can be widely used to fabricate a variety of electronic devices, including image sensors, solar cells, liquid crystal displays, organic electroluminescence (EL) displays, and touch screen panels, that have need of electrodes possessing both light transmission properties and conductive properties.

Transparent carbon nanotube electrode with net-like carbon nanotube film and preparation method thereof

There is provided a polymer electroluminescent device, which comprises a transparent substrate, an anode, a polymer emitting layer, a polymer insulating nanolayer and a cathode. The polymer insulating nanolayer having the dielectric constant (&#x2208;) of less than 3.0 is located between the cathode and the polymer emitting layer. According to the present invention, it is possible to obtain the polymer electroluminescent device showing more improved luminance efficiency.

High-efficiency polymer electroluminescent device with a polymer insulating nanolayer

A polymeric electroluminescent device suppresses photo-oxidation and enhances luminous stability and efficiency by using a nanocomposite of a luminescent polymer and metal nanoparticles as its emitting layer.

Polymeric electroluminescent device using an emitting layer of nanocomposites

Disclosed herein is a multiphase electrorheological fluid having an improved yield stress and stability. The multiphase electrorheological fluid comprises a first liquid phase component as a continuous oil phase; particles dispersed in the continuous oil phase; and a second liquid phase component which consists of emulsion liquid droplets and is dispersed in the continuous oil phase while being immiscible with the continuous oil phase. The dispersed liquid droplets have higher electrical conductivity and dielectric constant than those of the continuous oil phase.

Multiphase electrorheological fluid

A method for fabricating a preform for a plastic optical fiber, having continuous refractive index profile in a radial direction, comprising a firs step of introducing a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, to a cylindrical reactor and polymerizing the mixture in a centrifugal field generated by rotating the reactor; a second step of compensating for a void formed by volume shrinkage from the polymerization in the first step with a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, and polymerizing the mixture in a centrifugal field generated by rotating the reactor, and a third step of repeating the second step until there is no void after polymerization

Method for fabricating a preform for a plastic optical fiber and a preform for a plastic optical fiber fabricated thereby

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Daejeon, South Korea

O Ok Park