Samsung Display Co., Ltd.

University-Industry Cooperation Group of Kyung Hee University

Industry-academic Cooperation Foundation Gyeongsang National University

Taekyung Kim

Jaeyong Lee

Seulong Kim

Minkyung Kim

Daeyup Shin

Pilgu Kang

Jiyoung Kwon

Sunwoo Kang

Miehwa Park

Jungsub Lee

Soonchul Chang

Jaehoon Hwang

Sooyon Kim

Youngkook Kim

Seokhwan Hwang

Soobyung Ko

Sanghyun Han

Hyosup Shin

Youngmi Cho

Sangho Jeon

Soon-Chul Chang

Mugyeom Kim

Yoonhyeung Cho

Hyein Jeong

Munki Sim

Sunghun Lee

Ohjune Kwon

Seongmin Wang

Myeongsuk Kim

Sungwook Kim

Hyejin Jung

Wonjun Song

Yun-Hi Kim

Soon-Ki Kwon

Mina Kim

Dongseob Jeong

Yun-hi Kim

Soon-ki Kwon

Yoonkyoo Lee

Heeyeon Kim

Illsoo Park

Jahyun Im

Jeonga Oh

Jaeyoung Hwang

Eunkyung Koh

Eungyoung Park

Jiyoung Song

Dahye Cho

JangHyuk Kwon

Yeonhee Ha

Jaebok Kim

Juyoung Lee

Daehyun Ahn

Siwoo Kim

Jisu Moon

Provided are an organic light-emitting device having improved luminescent efficiency and a compound.

Organic light-emitting device and compound

Provided are an organic-light-emitting device and a display apparatus including the same. The organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and including at least one light-emitting unit, wherein the at least one light-emitting unit includes: an emission layer; and a hole transport region between the first electrode and the emission layer and including a first hole transport (HT) layer, the emission layer includes a host, the first HT layer includes a first compound, a minimum bond dissociation energy (BDE) of the first compound is larger than a triplet energy (T) of the host, and a minimum bond dissociation energy (BDE) of the host is larger than the triplet energy (T) of the host.

Organic light-emitting device and display apparatus including the same

A light emitting device includes a first electrode, a first stack on the first electrode, a first charge generation layer on the first stack, a second stack on the first charge generation layer, and a second electrode on the second stack. The first stack includes a first light emitting layer and a plurality of first organic layers, and the second stack includes a second light emitting layer and a plurality of second organic layers. Among the plurality of first organic layers and the plurality of second organic layers, at least one of organic layers adjacent to the first light emitting layer and the second light emitting layer includes a light emitting material.

Light emitting device and display panel including same

An organometallic compound includes a hexadentate ligand bonded to a metal atom (M). An energy level (E) of aMC state (triplet metal centered state) of the organometallic compound is higher than an energy level (E) of aMLCT state (triplet metal-to-ligand charge transfer state) of the organometallic compound.

Organometallic compound and organic light-emitting device including the same

An organic light-emitting device and a heterocyclic compound, the device including a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and including an emission layer, wherein the organic layer includes a heterocyclic compound represented by Formula 1: 

Heterocyclic compound and organic light-emitting device including the same

Provided are a condensed cyclic compound having the following structure: wherein ring Dand ring Dare each independently a C-Caromatic ring, and an organic light-emitting device including the same.

Condensed cyclic compound and organic light-emitting device including the same

An organic light-emitting device is provided, including: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and comprising an emission layer, wherein the emission layer includes a host and a dopant, wherein the host includes at least one selected from a phosphine oxide-based compound, a pyrimidine-containing compound, a triazine-containing compound, and a cyano group-containing compound, and the dopant satisfies Equation 1, wherein, in Equation 1, Erefers to a singlet state energy level (eV) of the dopant; and Erefers to a triplet state energy level (eV) of the dopant:||&#x2264;0.2 eV.&#x2003;&#x2003;Equation 1

Organic light-emitting device

A condensed cyclic compound is represented by Formula 1. An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode and comprising an emission layer, the organic layer including the condensed cyclic compound represented by Formula 1. A display apparatus includes: a thin-film transistor comprising a source electrode, a drain electrode, and an active layer; and the organic light-emitting device.

Condensed cyclic compound, organic light-emitting device including the same, and display apparatus including the organic light-emitting device

Provided are a heterocyclic compound represented by Formula 1 below, and an organic electroluminescence device including the same in an emission layer. In Formula 1, X is a direct linkage or CRR, Zto Zare each independently CRor N, at least two of Z, Z, Zand Zare each independently CR, and Ris represented by Formula 2 or Formula 3 below. 

Heterocyclic compound and organic electroluminescence device including the same

Provided are an organic electroluminescence device and a display device including the same. The organic electroluminescence device includes a polycyclic compound represented by Formula 1 in a hole blocking layer and at least one of a first light emitting layer and an electron transport layer, wherein each of Yto Yand Yto Yis independently CH or N, at least four of Yto Yare CH, at least four of Yto Yare CH, and R, R, and Rare as disclosed in the description. 

Organic electroluminescence device and display device including the same

Provided are a heterocyclic compound and an organic light-emitting device including the same.

An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and including an emission layer and a triplet exciton quenching layer. A display apparatus includes a thin film transistor comprising a source electrode, a drain electrode, and an active layer; and the organic light-emitting device, where the first electrode of the organic light-emitting device is electrically coupled to one selected from the source electrode and the drain electrode of the thin film transistor.

An organic light-emitting device including: a first electrode, a hole transport region including a first hole transport layer (HTL), an emission layer, an electron transport region; and a second electrode; wherein the first HTL includes a first compound and a second compound, the emission layer includes a third compound and a fourth compound, the electron affinity of the second compound is greater than the electron affinity of the first compound, a lowest unoccupied molecular orbital (LUMO) energy level of the fourth compound is greater than a LUMO energy level of the third compound, the second compound and the third compound are different from each other, and the minimum anionic dissociation energy of the second compound is greater than the triplet energy of the third compound.

An apparatus to evaluate a stability of a luminescent material includes an electrochemical cell that includes a sample including a solvent and the luminescent material mixed in the solvent, a voltage application device that applies a constant voltage to the sample, a light source that irradiates a source light to the sample, and a photoluminescence measuring device that measures a luminescence spectrum of an emission light generated by the luminescent material.

Apparatus of evaluating stability of luminescent material and method of evaluating the same

Growing community of inventors

Yongin-si, South Korea

Taekyung Kim