A series of thermally stable and highly luminescent cyclometalated tetradentate ligand-containing gold(III) compounds was designed and synthesized. The cyclometalated tetradentate ligand-containing gold(III) compounds can be used as light-emitting material for fabrication of light-emitting devices. The cyclometalated tetradentate ligand-containing gold(III) compounds can be deposited as a layer or a component of a layer using a solution-processing technique or a vacuum deposition process. The cyclometalated tetradentate ligand-containing gold(III) compounds are robust and can provide electroluminescence with high efficiency and brightness. More importantly, the vacuum-deposited OLEDs demonstrate long operational stabilities with half-lifetime of over 29,700 hours at 100 cd m.sup.−2.

Compounds of Formula I,

##STR00001##

and Formula IIa,

##STR00002##

Formula IIb,

##STR00003##

are provided. In these structures, M is Pt or Pd; each of X.sup.1 to X.sup.6, X.sup.9 to X.sup.12, and Z.sup.1 to Z.sup.3 is C or N; each of L.sup.1, L.sup.2, L.sup.3, and L.sup.4 is a direct bond or a linker; at least three of L.sup.1, L.sup.2, L.sup.3, and L.sup.4 are present; each K.sup.1, K.sup.2, and K.sup.3 is a bond, O, or S; when Z.sup.1 is N, ring A in Formula I is not a pyridine or pyrazole; L.sup.5 is a bond or an organic linker; Y is selected from the group consisting of amino, alkoxy, aryloxy, or SiR.sup.1R.sup.2R.sup.3; when Y is SiR.sup.1R.sup.2R.sup.3, L.sup.2 is not BR. Devices, consumer products, and formulations containing these compounds are also disclosed.

Highly thermal and photo-stable inorganic-organic hybrid phosphor compounds, in which a copper (I) halide module is coordinated with a multi-dentate organic ligand. Also disclosed are semiconductor and light emitting devices comprising these materials, including light emitting diodes, and methods of preparing these materials and devices.

A fused ring compound and applications thereof in organic electronic components, particularly in organic electroluminescent diodes; an organic electronic component comprising the fused ring compound, and applications thereof in organic electroluminescent diodes and in display and lighting technologies; and a formulation comprising the fused ring compound, and applications thereof in the preparation of organic electronic components. By optimizing the component structure, good component performance can be achieved, and especially, a high-performance OLED component can be implemented, which provide good material and preparation technology choices for full-color display and lighting applications.

A novel light-emitting element material is provided. Alternatively, a light-emitting element material capable of simplifying a process for manufacturing a light-emitting element is provided. Alternatively, a light-emitting element material capable of reducing the cost for manufacturing a light-emitting element is provided. Alternatively, one embodiment of the present invention provides a light-emitting element material capable of achieving a light-emitting element having favorable emission efficiency. A light-emitting element material including an organic compound which includes a first skeleton having a carrier-transport property and a second skeleton having a light-emitting property in one molecule and in which the molecular weight is less than or equal to 3000, is provided.

The invention relates to heteroaromatic, polycyclic condensed compounds according to the formulae (i) and (ii) defined below. Said compounds are suitable for use in electronic devices.

A series of highly luminescent cyclometalated rhodium(III) complexes, with photoluminescence quantum yields up to 0.65 in thin films, have been designed and prepared. The strong luminescence property is realized by the judicious choice of a strong σ-donor cyclometalating ligand with lower-lying intraligand state and the ability to raise the d-d excited state. This is the first report to demonstrate the capability of rhodium(III) complexes as high efficient light-emitting materials for organic light-emitting devices. Compelling external quantum efficiencies of up to 12.2% and operational half-lifetime of over 3,000 hours have been achieved.

The present invention relates to an organic electroluminescent device comprising a light-emitting layer B containing at least one host compound H of Formula (I) ##STR00001##
wherein each of X′.sub.1 and X′.sub.2 is independently from another selected from the group consisting of nitrogen and an optionally substituted carbon atom, and wherein at least one of R′.sub.1—R′.sub.10 is CN and at least one of R.sub.A—R.sub.E is a substituted silane residue.

A compound including a first ligand L.sub.A having a structure of Formula I ##STR00001##
is disclosed. The compound is useful a an emitter dopants in OLEDs for enhancing the OLED performance.

A compound of Formula I: ##STR00001## wherein ring A is a 5-membered or 6-membered aromatic ring; wherein R.sup.A, R.sup.B, and R.sup.C each independently represent mono to the maximum allowable substitution, or no substitution; wherein Y.sup.1 is absent or present, and when present is selected from the group consisting of a direct bond, O, S, Se, CRR′, NR, SiRR′, and BR; wherein each X.sup.1-X.sup.3 is N or CR; wherein at least one of X.sup.1-X.sup.3 is N; wherein each A.sup.1-A.sup.5 is independently C or N; wherein the maximum number of N atoms that can connect to each other within each ring is two; wherein each R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is independently selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, aryl, heteroaryl, and combinations thereof; wherein each R, R′, R.sup.A, R.sup.B, and R.sup.C is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and wherein any two substituents may be joined or fused together to form a ring.