Samsung Display Co., Ltd.

Sungkyunkwan University

Nic Lab Co., Ltd.

Yunku Jung

Jaekook Ha

Hyunmi Doh

Changhee Lee

Dukki Kim

Sungwoon Kim

Jaehoon Kim

Minki Nam

Hyojin Ko

Sehun Kim

YunHyuk Ko

Jae Hong Park

Junwoo Park

Myoungjin Park

Yunhyuk Ko

Sooho Lee

Jaehong Park

Hyekyoung Choi

Dongwoo Shin

Jongwon Park

Kyoungwon Park

Jonghoon Kim

JunBo Sim

Wan Ki Bae

Chulsoon Park

Byeong Guk Jeong

Changho Cho

Hanyoung Choi

Changyeol Han

Yohan Suh

Disclosed are a light-emitting device and a method of manufacturing the same. The light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode and including a quantum dot including a first ligand bonded to a surface thereof; and a charge transport layer including an inorganic nanoparticle including a second ligand bonded to a surface thereof, wherein an interface between the emission layer and the charge transport layer includes a cross-link in which the first ligand on the surface of the quantum dot and the second ligand on the surface of the inorganic nanoparticle are linked by a cross-linking agent.

Light-emitting device and method of manufacturing the same

A quantum dot composition according to one or more embodiments includes a quantum dot, a first ligand including a first head portion bonded to a surface of the quantum dot and a first tail portion having a crosslinkable functional group at a terminal of the first ligand, and a second ligand bonded to the surface of the quantum dot and being shorter in length than the first ligand. A quantum dot composition according to one or more embodiments is applied to a light-emitting element and a display device, and thus, it is possible to improve a luminous efficiency and element lifespan of the light-emitting element and the display device.

Quantum dot composition, light-emitting element and display device including the same

A quantum dot composition includes a quantum dot and a ligand bonded to a surface of the quantum dot, wherein the ligand includes a head portion bonded to the surface of the quantum dot, and a tail portion containing a crosslinkable functional group. The quantum dot composition according to one or more embodiments may be applied to an emission layer of a light emitting element and a display device to improve luminous efficiency and service life of the light emitting element and the display device.

Quantum dot composition, light emitting element and display device including the same

A quantum dot composition includes a quantum dot, and a ligand bonded to a surface of the quantum dot, wherein the ligand includes a head portion bonded to the surface of the quantum dot and containing a polar solvent dissociative functional group, and a tail portion connected to the head portion. A quantum dot composition according to an embodiment is used to form an emission layer of a light emitting element to enhance luminous efficiency of the light emitting element including an emission layer formed through the quantum dot composition.

Method for manufacturing a light emitting element including a quantum dot composition

A quantum dot includes: a nanoparticle; and a ligand represented by Formula 1 on a surface of the nanoparticle: Ais an anchoring group linked to the surface of the nanoparticle, and Amay be selected from groups represented by Formulae A-1 to A-4: wherein * in Formulae A-1 to A-4 indicates a binding site to a neighboring atom.

Quantum dot, and ink composition, light-emitting device, optical member, and apparatus including quantum dot

A quantum dot composition includes a quantum dot having a surface to which a ligand is bonded, and a photoacid generator. The quantum dot composition according to one or more embodiments may be applied to an emission layer of a light emitting element and a display device, thereby improving luminous efficiency of the light emitting element.

Quantum dot composition, light emitting element, and method for manufacturing the same

An inorganic nanoparticle composition includes an inorganic nanoparticle and a highly fluorinated solvent, and the inorganic nanoparticle includes an inorganic material and a F-containing charge-transporting organic ligand. A light-emitting device with the inorganic nanoparticle composition, for example, as a material for forming at least a portion of an electron transport region in the light-emitting device. An electronic apparatus includes the light-emitting device.

Inorganic nanoparticle composition, light-emitting device, method of manufacturing light-emitting device, and electronic apparatus including light-emitting device

A method for producing a quantum dot composition includes providing a preliminary quantum dot composition containing a quantum dot to which a ligand is bonded and a free ligand, providing an adsorbent to the preliminary quantum dot composition, adsorbing the free ligand to the adsorbent, and removing a modified adsorbent to which the free ligand is adsorbed to provide a purified quantum dot composition. A light emitting element including the purified quantum dot composition may have superior luminous efficiency.

Method for producing quantum dot composition and method for manufacturing light emitting element including the same

A quantum dot composition includes a quantum dot having a surface to which a ligand is bonded, and a thermal decomposition auxiliary compound. The quantum dot composition may be applied to an emission layer of a light emitting element and a display device, thereby improving luminous efficiency of the light emitting element and the display device.

Provided is a light emitting element according to embodiments which includes a body including a semiconductor layer and an active layer, and a ligand including a head portion bonded to a surface of the body, an end portion spaced apart from the body, and having a positive or a negative charge, and a chain portion connecting the head portion and the end portion.

Light emitting element and display device including the same and method for manufacturing display device

A quantum dot composition includes a quantum dot, and a ligand bonded to a surface of the quantum dot, wherein the ligand includes a head portion bonded to the surface of the quantum dot, a connecting portion connected to the head portion and including a metal, and a tail portion coordinated to the metal of the connecting portion. The quantum dot composition according to the present embodiments is used to form an emission layer of a light emitting element, and may thus increase service life and luminous efficiency of the light emitting element including the emission layer formed using the quantum dot composition.

Quantum dot composition including a quantum dot, and a ligand having a head portion, a connecting portion including a metal, and a tail portion

A quantum dot composition includes a quantum dot, a ligand to bind to a surface of the quantum dot, an additive having an amine group, and a precursor comprising an organometallic compound, the composition forming a modified quantum dot having a reformed surface characteristic. A light emitting element including the modified quantum dot may have improved lifespan, luminous efficiency, and material stability.

A quantum dot includes a core and a plurality of shell layers surrounding the core. The core has a band gap less than that of the outermost shell layer, and the outermost shell layer has a band gap less than that of a second shell layer. Thus, a light emitting device including the quantum dot according to an embodiment may have an improved lifespan of the device and excellent luminous efficiency characteristics.

Quantum dot and lighting emitting device comprising the same

Quantum dot composition including a ligand bonded to a surface of a quantum dot, light emitting element including an emission layer containing a quantum dot and ligand residues, and method for manufacturing the same

A quantum dot composition may include: a first solvent; a second solvent different from the first solvent; first quantum dots including a hole-transporting ligand; and second quantum dots including an electron-transporting ligand, wherein the first solvent and the second solvent are miscible solvents having different boiling points from each other, a degree of dispersion of the first quantum dots is greater in the first solvent than in the second solvent, and a degree of dispersion of the second quantum dots is greater in the second solvent than in the first solvent.

Growing community of inventors

Cheonan-si, South Korea

Yunku Jung