Provided are a conductive laminate having low electric resistance and high transmittance over a long period of time, various optical elements provided with the conductive laminate, and a method for manufacturing the conductive laminate. In the conductive laminate 1 according to the present technology, a first transparent material layer 3, a metal layer 4 mainly composed of silver, and a second transparent material layer 5 are laminated on at least one surface of the transparent substrate 2 in this order from the transparent substrate 2 side. The first transparent material layer 3 is composed of a composite metal oxide containing at least zinc and tin and containing 10 atomic % or more and 90 atomic % or less of tin. The second transparent material layer 5 is composed of a metal oxide containing zinc and having a tin content of 10 atom % or less.

Disclosed is an organometallic compound represented by a following Chemical Formula 1. The organometallic compound acts as a dopant of a light-emitting layer of an organic light-emitting diode. Thus, operation voltage of the diode is lowered, and luminous efficiency and lifespan thereof are improved:

Ir(L.sub.A).sub.m(L.sub.B).sub.n  [Chemical Formula 1] where in the Chemical Formula 1, L.sub.A represents a main ligand, and is one selected from a group consisting of Chemical Formula 2-1, Chemical Formula 2-2, and Chemical Formula 2-3, L.sub.B denotes an ancillary ligand represented by a Chemical Formula 3, each of m and n denotes a number of the ligands bound to Ir (iridium), and m is 1, 2 or 3, and n is 0, 1 or 2, and a sum of m and n is 3.

An organic light emitting diode and an organic light emitting device including the organic light emitting diode are discussed. The organic light emitting diode can include a first compound represented by the following formula, a second compound as a p-type host and a third compound as an n-type host in an emitting material layer. As a result, the organic light emitting diode and the organic light emitting device have advantages in the driving voltage, the luminous efficiency and the lifespan.

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An organometallic compound, represented by Formula 1:

M.sub.1(Ln.sub.1).sub.n1(Ln.sub.2).sub.n2  Formula 1

wherein, Ln.sub.1 is a ligand represented by Formula 1-1, Ln.sub.2 is a ligand represented by Formula 2-1 or Formula 2-2, n1 may be 1 or 2, and n2 may be 1 or 2, wherein the other substituents may be understood by referring to the descriptions thereof provided herein:

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A compound including a first ligand L.sub.A of Formula I,

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is provided. In Formula I, each of moiety A and moiety B independently represents monocyclic or polycyclic rings; one of Z.sup.1 and Z.sup.2 is C and the other is N; K is a direct bond, O, or S; at least one R.sup.A or R.sup.B has a structure of Formula II,

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where at least two of X.sup.1 to X.sup.4 are C; L is a direct bond or an organic linker; each R, R′, R″, R.sup.A, R.sup.B, and R.sup.C is a hydrogen or a General Substituent; and L.sub.A is coordinated to a metal M. Formulations, OLEDs, and consumer products containing the compound are also provided.

A light emitting device of an embodiment includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region, wherein the emission layer includes an organometallic compound represented by Formula 1, thereby showing long life and high efficiency.

A compound comprising a metal M and a first ligand L.sub.A having a structure of Formula I,

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is described. In Formula I, each independently represents a single bond or a double bond; each of X.sup.1′ to X.sup.4′ is independently C, N, or NR′; at least one of X.sup.1 to X.sup.4 is NR′; each R.sup.A′, R′, R.sup.1, R.sup.2, and R.sup.3 is independently hydrogen or a general substituent; at least one of R.sup.A′, R′, R.sup.1, R.sup.2, and R.sup.3 comprises the metal M; when X.sup.1 and X.sup.2 are both NR′, the B atom of Formula I forms a maximum of one direct bond to a nitrogen atom, and does not form a direct bond to an oxygen atom; and any two adjacent R.sup.A, R′, R.sup.1, R.sup.2, and R.sup.3 can be joined or fused to form a ring. Formulations, OLEDs, and consumer products including the compounds are also described.

An organic electroluminescence device of an embodiment includes a first electrode, a second electrode facing the first electrode, and multiple organic layers disposed between the first electrode and the second electrode, wherein the organic layers include at least one organic layer including a fused polycyclic compound represented by Formula 1, thereby showing improved emission efficiency.

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Heteroleptic compounds having a structure of Ir(L.sub.A).sub.p(L.sub.B).sub.q(L.sub.C).sub.r, where L.sub.B and L.sub.C are different bidentate ligands, p is 1 or 2, q is 1 or 2, r is 0, 1, or 2, and ligand L.sub.A has a structure of Formula I,

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In Formula I, moiety B is a monocyclic or polycyclic fused ring system; each of X.sup.1 to X.sup.6 is C or N; each R.sup.A, R.sup.B, and R.sup.C is independently a hydrogen or a general substituent; at least one R.sup.B comprises a partially or fully deuterated alkyl or cycloalkyl group; if moiety B is phenyl, at least two adjacent R.sup.C substituents are fused to form a ring, with the proviso that at least one L.sup.B or L.sup.C is present and is not a phenylpyridine-based ligand. Formulations, OLEDs, and consumer products containing the same are also disclosed.

A light emitting device includes an emission layer disposed between electrodes. The emission layer includes a host and a delayed fluorescence dopant. The delayed fluorescence dopant includes a fused polycyclic compound represented by Formula 1:

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