Seoul National University

Samsung Electronics Co., Ltd.

Snu Rdb Foundation

Lg Display Co., Ltd.

Korea Institute of Science and Technology

Industry-university Cooperation Foundation Sogang University

Kook Heon Char

Eun Joo Jang

Wan Ki Bae

Jin Kyu Lee

Jae Young Choi

Chang-Hee Lee

Dong Woo Yoo

Yoon Kyung Choi

Jin-Kyu Lee

Yong Soo Kang

Hee-Woo Rhee

Jae-Jin Shin

Seong Jin Choi

Bulliard Xavier

Seong-Hoon Lee

Ho Sub Kim

Ho-Cheol Kang

Bongjin Moon

Young-Hoon Noh

Sung-Kyu Min

Heon Su Jeon

Do Young Yoon

Jeong Hun Kwak

Seung Jae Yang

Joo Hyeon Park

Jae Hoon Lim

Kyungtaek Min

Sang Wook Kang

Se Jung Park

Yu Jin Kang

Dong Gu Lee

A light emitting device comprising a photonic crystal structure having a crystal structure in which nanospheres are densely arranged in a 3D manner, wherein the nanospheres have phosphors excited by an excitation source to emit light of a wavelength longer than a pump photon of the excitation source, wherein the photonic crystal structure has at least a photonic bandgap (PBG) along a specific crystal orientation, and wherein the wavelength of the pump photon overlaps a photonic bandedge region.

Light emitting device having photonic crystal structure

Methods for producing nanoparticle thin films are disclosed. According to one of the methods, a nanoparticle thin film is produced by modifying the surface of nanoparticles to allow the nanoparticles to be charged, controlling an electrostatic attractive force between the charged nanoparticles and a substrate and a repulsive force between the individual nanoparticles by a variation in pH to control the number density of the nanoparticles arranged on the substrate.

Method for dispersing nanoparticles and methods for producing nanoparticle thin films by using the same

The present invention relates to a quantum dot light emitting element which can form a quantum light emitting layer configured of charge transporting particles and quantum dots and a charge transporting layer in a solution process, to reduce process expense, and a method for manufacturing the same. The quantum dot light emitting element includes a substrate, an anode formed on the substrate, a quantum light emitting layer formed on the anode, the quantum light emitting layer having charge transporting particles and quantum dots mixed therein, and a cathode formed on the quantum light emitting layer.

Quantum dot light emitting element and method for manufacturing the same

A method for producing nanoparticle/block copolymer composites is provided. The method includes mixing nanoparticles having an organic ligand L and a block copolymer A-b-B having block repeating units A and B with different solubility parameters in a solvent S to form micelles by self-assembly. The solubility parameters of the organic ligand L, the block repeating units A and B of the block copolymer A-b-B and the solvent S satisfy the following inequalities:29&#x2266;&#x3b4;&#x2212;&#x3b4;&#x2003;&#x2003;(1)&#x3b4;&#x2212;&#x3b4;&#x2266;29&#x2003;&#x2003;(2)|&#x3b4;&#x2212;&#x3b4;|&#x2266;5 or |&#x3b4;&#x2212;&#x3b4;|&#x2266;5&#x2003;&#x2003;(3)in which &#x3b4;, &#x3b4;, &#x3b4;and &#x3b4;represent the solubility parameters of the solvent S, the block repeating unit A, the block repeating unit B and the ligand L, respectively. According to the method, the inherent electrical, magnetic, optical, chemical and mechanical properties of the nanoparticles can be maintained or improved without the need to modify the surface of the nanoparticles.

Method for producing nanoparticle/block copolymer composites and devices containing the same

There is provided a nanocomposite membrane comprising an Ag-nanoparticle/polymer nanocomposite, in which the Ag-particles are uniformly dispersed in the polymer matrix, and a support membrane for supporting the nanocomposite, as well as a process of preparing said membrane. The nanocomposite membrane of the present invention comprising a neutral Ag-nanoparticle as an olefin carrier, which is chemically stable, has excellent long-term operation performance characteristics as well as high selectivity and permeability. Thus, it can be advantageously used for the separation of olefin from an olefin/paraffin mixture.

Silver nanoparticle/polymer nanocomposite membranes for olefin/paraffin separation and method of preparing the same

This invention is related to a reactive nanoparticular cyclodextrin derivative useful as a porogen and a low dielectric matrix, with excellent mechanical properties and uniformly distributed nanopores, manufactured by sol-gel reaction of the above reactive cyclodextrin. Furthermore, this invention also is related to an ultralow dielectric film, with uniformly distributed nanopores, a relatively high porosity of 51%, and a relatively low dielectric constant of 1.6, manufactured by thin-filming of the conventional organic or inorganic silicate precursor by using the above reactive nanoparticular cyclodextrin derivative as a porogen.

Reactive cyclodextrin derivatives as pore-forming templates, and low dielectric materials prepared by using the same

The present invention provides norbornene-based copolymers for which one monomer is at least selected from a group consisting of norbornene and dicyclopentadiene, and the other from norbornene-based comonomers of Formula 1 shown below:   In Formula 1, R, Rand a are defined in this specification. The present invention provides insulating elements for multi-chip packages and antireflection films for the exposure process of semiconductor fabrication using said norbornene-based copolymers. Norbornene-based copolymers according to the present invention have low dielectric constant as well as high thermal stability and excellent solubility to various organic solvents.

Thermally stable low dielectric norbornene polymers with improved solubility and adhesion property

Growing community of inventors

Seoul, South Korea

Kook Heon Char