A semiconductor nanocrystal-ligand composite that includes a semiconductor nanocrystal and a ligand layer including an organic ligand coordinated on the surface of the semiconductor nanocrystal, wherein the organic ligand includes a moiety having a conjugation structure, and a first functional group (X) and a second functional group (Y) linked to the moiety having a conjugation structure, wherein the first functional group (X) is bound to the surface of the semiconductor nanocrystal and the second functional group (Y) is present at an ortho position with respect to the first functional group (X).

The present invention relates to an organometallic complex as shown in general formula (I), and to a polymer, mixture and formulation comprising same, and to use thereof in an electronic device, in particular the use in an organic luminous diode. By providing a new high performance phosphorescent luminous material, in the present the device structure is optimized such that the device achieves the best performance, realizing a high efficiency, high luminance and high stability OLED device, thereby providing a better material option for full-color display and lighting.

The invention relates to an electronic device, to the use thereof, and to a method for the production thereof.

The invention relates to iridium complexes that are suitable for use in organic electroluminescent devices, in particular as emitters.

A composition, including a first compound represented by Formula 1 and a second compound represented by Formula 2:

Ir(L.sub.11).sub.n11(L.sub.12).sub.n12(L.sub.13).sub.n13  Formula 1

Ir(L.sub.21).sub.n21(L.sub.22).sub.n22(L.sub.23).sub.n23  Formula 2

wherein L.sub.11, L.sub.12, L.sub.13, L.sub.21, L.sub.22, and L.sub.23 are each i) a bidentate ligand bonded to Ir of Formula 1 or 2 via two nitrogen atoms, ii) a bidentate ligand bonded to Ir of Formula 1 or 2 via a nitrogen atom and a carbon atom, or iii) a bidentate ligand bonded to Ir of Formula 1 or 2 via two carbon atoms, L.sub.11, L.sub.12, and L.sub.13 are different from one another; n11, n12, n21, and n22 are each independently 1 or 2; n13 and n23 are each independently 0 or 1; a sum of n11, n12, and n13 is 3; a sum of n21, n22, and n23 is 3; and L.sub.11 and L.sub.21 are different from each other.

Provided is an OLED having an anode, a cathode and an organic emissive layer disposed between the anode and the cathode. The emissive layer includes a first host; and a first emitter; wherein the first emitter is selected from the following group: (L.sup.1-L.sup.2).sub.nIr(L.sub.A).sub.3−n and (L.sub.B).sub.nIr(L.sup.3-L.sup.4).sub.3−n; wherein (L.sup.1-L.sup.2).sub.nIr(L.sub.A).sub.3−n is

##STR00001##

The invention relates to compounds comprising functional substituents in a specific spatial arrangement, devices containing same, and the preparation and use thereof.

The present disclosure provides an organic electroluminescent device including: an anode; a cathode; and one or more organic material layers interposed between the anode and cathode and selected from the group consisting of a hole injection layer, a hole transporting layer, a light emitting layer, an electron transporting layer, and an electron injection layer, and further including a lifetime enhancement layer (LEL) between the light emitting layer and the electron transporting layer.

New organometallic complexes having bis- or tris-heteroleptic ligands and large aspect ratio in one direction and their use in OLEDs to enhance the efficiency is disclosed.

An organic molecule, comprising a structure of Formula III: ##STR00001##
especially for use in optoelectronic components.