Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes at least one first material and at least one second material, the first material being represented by Formula 1 and the second material being represented by Formula 2:

Abstract: 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, wherein the organic layer includes an emission layer including a compound represented by Formula 1: An organic light-emitting device using the compound of Formula 1 may have high efficiency, low voltage, high luminance, and long lifespan.

Abstract: An organic light-emitting device including: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, wherein the emission layer includes a first compound represented by Formula 1A or 1B, and at least one selected from the hole transport region and the electron transport region includes a second compound represented by Formula 2A or 2B:

Abstract: An organic light-emitting device includes an anode, a cathode, and an organic layer between the anode and the cathode, wherein the organic layer includes a mixed organic layer, and the mixed organic layer includes at least two different compounds, and a triplet energy of at least one compound of the at least two different compounds is 2.2 eV or higher. The organic light-emitting device according to embodiments of the present invention may have a low driving voltage, a high efficiency, and a long lifespan.

Abstract: An organic light-emitting device includes a first electrode; a second electrode facing the first electrode; and an organic layer including an emission layer between the first electrode and the second electrode.

Abstract: An organic light emitting element and an organic light emitting device, the organic light emitting element including a first compound represented by the following Chemical Formula 1 and a second compound represented by the following Chemical Formula 2:

Abstract: 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.

Abstract: 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, the organic layer including: an emission layer, an electron transport region between the second electrode and the emission layer, and a mixed layer between the emission layer and the electron transport region, the mixed layer including a first material and a second material, the first material and the second material being selected from a pyrrolidine-based compound and a C10-C30 polycyclicaromatic hydrocarbon-based compound, and a triplet energy EgT1 of at least one selected from the first material and the second material being 2.2 eV or greater.

Abstract: An organic light emitting diode display device includes: a substrate; a first electrode on the substrate; a hole transport layer on the first electrode; an organic light emitting layer on the hole transport layer; and a second electrode on the organic light emitting layer. The hole transport layer includes a hole transport layer composition including a compound represented by Chemical Formula 1, a compound represented by Chemical Formula 2, a compound represented by Chemical Formula 3, and a compound represented by Chemical Formula 4.

Abstract: An organic light-emitting device with improved efficiency and improved lifetime 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.

Abstract: An organic light-emitting device having low-driving voltage, improved efficiency, and long lifespan includes: a first electrode; a second electrode facing the first electrode; a first layer between the first electrode and the second electrode, the first layer including a first compound; a second layer between the first layer and the second electrode, the second layer including a second compound; and a third layer between the second layer and the second electrode, the third layer including a third compound; wherein the first compound does not include a nitrogen-containing heterocyclic group comprising *?N—*? as a ring forming moiety, and wherein the first compound, the second compound, and the third compound each independently include at least one group selected from groups represented by Formulae A to C:

Abstract: An organic light-emitting device includes an anode, a cathode, and an organic layer between the anode and the cathode, wherein the organic layer includes a mixed organic layer, and the mixed organic layer includes at least two different compounds, and a triplet energy of at least one compound of the at least two different compounds is 2.2 eV or higher. The organic light-emitting device according to embodiments of the present invention may have a low driving voltage, a high efficiency, and a long lifespan.

Abstract: 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, the organic layer including: an emission layer, an electron transport region between the second electrode and the emission layer, and a mixed layer between the emission layer and the electron transport region, the mixed layer including a first material and a second material, the first material and the second material being selected from a pyrrolidine-based compound and a C10-C30 polycyclicaromatic hydrocarbon-based compound, and a triplet energy EgT1 of at least one selected from the first material and the second material being 2.2 eV or greater.

Abstract: An organic light emitting diode including a first compound represented by one of Chemical Formulae 1-A to 1-D and a second compound represented by Chemical Formula 2:

Abstract: An organic light-emitting device including a first compound represented by Formula 1 and a second compound represented by one of Formulae 2A to 2C.

Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes at least one first material and at least one second material, the first material being represented by one of Formulae 1-1 and 1-2, below, and the second material being represented by Formula 2, below: (A21)n21-(A22)n22-(A23)n23-(A24)n24.

Abstract: An organic light-emitting device including a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes at least one first material represented by Formula 1 and at least one second material represented by Formula 2:

Abstract: An organic light-emitting device having low-driving voltage, improved efficiency, and long lifespan includes: a first electrode; a second electrode facing the first electrode; a first layer between the first electrode and the second electrode, the first layer including a first compound; a second layer between the first layer and the second electrode, the second layer including a second compound; and a third layer between the second layer and the second electrode, the third layer including a third compound; wherein the first compound does not include a nitrogen-containing heterocyclic group comprising *?N—*? as a ring forming moiety, and wherein the first compound, the second compound, and the third compound each independently include at least one group selected from groups represented by Formulae A to C:

Abstract: An organic light emitting diode display device includes: a substrate; a first electrode on the substrate; a hole transport layer on the first electrode; an organic light emitting layer on the hole transport layer; and a second electrode on the organic light emitting layer. The hole transport layer includes a hole transport layer composition including a compound represented by Chemical Formula 1, a compound represented by Chemical Formula 2, a compound represented by Chemical Formula 3, and a compound represented by Chemical Formula 4.

Abstract: An organometallic complex represented by Formula 1-1 or Formula 1-2 is provided: wherein in Formulae 1-1 and 1-2, descriptions of R1 to R7, X1, X2, Y1 to Y4, rings A, B, C, and a to e are understood by referring to the description provided herein. An organic light-emitting device includes a first electrode, a second electrode facing the first electrode, and an organic layer that is disposed between the first electrode and the second electrode and includes an emission layer, wherein the organic layer includes at least one organometallic complex represented by Formula 1-1 or Formula 1-2.