Universal Display Corporation

University of Southern California

Geza Szigethy

Jason Brooks

Hsiao-Fan Chen

Scott A Beers

Joseph A Macor

Peter I Djurovich

Jun Deng

Glenn Morello

Nicholas John Thompson

Zhiqiang Ji

George Fitzgerald

Chuanjun Xia

Gregg Kottas

Tyler Fleetham

Zeinab M Elshenawy

Noah Horwitz

Wystan Neil Palmer

Jui-Yi Tsai

Pierre-Luc T Boudreault

Raymond Kwong

Walter H Yeager

Michael Stuart Weaver

Jerald Feldman

Peter Wolohan

Wei-Chun Shih

Woo-Young So

Eric A Margulies

Douglas Williams

Chi Hang Lee

Morgan C Macinnis

Siu Tung Lam

Kit Yee Tsang

Diana Drennan

Mark Edward Thompson

Michael Stewart Weaver

Christopher Bruce Murray

Rasha Hamze

Sze Kui Lam

Muazzam Idris

Neil Palmer

Patrick Saris

Mahesh Paudyal

Galyna Dubinina

Charles Stanton

Brooks Jason

Hsaio-Fan Chen

The present disclosure provides a compound including a first ligand Lof Formula I, In Formula I, ring A is a 7 to 12-membered heterocyclic ring that is fused to ring B, which is a 5-membered or 6-membered heterocyclic ring; ring C is a 5- or 6-membered ring; n is 1 or 2; X is selected from B, N, Al, In, and Ga; each W is selected from NR, O, S, Se, SO, SO, BR, CRR', C═CRR′, SiRR′, PRR′, and GeRR′; each of Z, Z, and Zis independently C or N; at least one of Z, Z, and Zis N; each R, R′, R, R, and Ris hydrogen or general substituent; each of Kand Kis a direct bond, O, or S; Lis coordinated to a metal M. Formulations, OLEDs, and consumer products containing the compound are also disclosed.

Organic electroluminescent materials and devices

Provided are organometallic compounds including a ligand Lof the following Formula I Also provided are formulations including these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Provided are compounds comprising a ligand Lof Formula I where the ligand Lis coordinated to Ir.

Provided is an OLED structure includes an organic layer having a primary phosphorescent emitter and a first host; where one of the following conditions is true: (1) the organic layer further includes a secondary emitter; or (2) the OLED further includes a second organic layer where the second organic layer includes a secondary emitter. The primary phosphorescent emitter has a peak emission wavelength λmax that is ≥600 nm and ≤750 nm; the secondary emitter has a peak emission wavelength λmax that is ≥750 nm; the primary phosphorescent emitter is capable of transferring energy to the secondary emitter; the first host has a lowest excited state triplet energy T1 that is at least 0.1 eV higher than that of the primary phosphorescent emitter; the primary phosphorescent emitter has the formula Pt(L); Lcan represent one or more ligands that are the same or different; each Lis independently monodentate or multidentate; and m represents a maximum possible number of ligands Lthat can coordinate to Pt.

Organic electroluminescent devices

Provided are compounds comprising a ligand Lof Formula I

An OLED structure including a first organic layer disposed between the anode and the cathode is disclosed. The first organic layer includes a primary phosphorescent emitter and a first host, and where one of the following conditions is true: (1) the first organic layer further includes a secondary emitter; or (2) the OLED further includes a second organic layer disposed between the anode and the cathode, wherein the second organic layer includes a secondary emitter. The phosphorescent emitter has a peak emission wavelength λmax that is ≥600 nm and ≤750 nm, the secondary emitter has a peak emission wavelength λmax that is ≥750 nm, and the first host has a lowest excited state triplet energy T1 that is at least 0.1 eV higher than that of the primary phosphorescent emitter.

Provided are organometallic compounds comprising a first ligand Lof Formula I wherein R, R, R, R, K, ring A and ring B are each defined herein.

Phosphorescent complexes are designed with intramolecular H-bonding properties to prevent deprotonation of neighboring molecules.

A compound having a structure of the formula Ir(L)(L), in which Lis a bidentate, tridentate, tetradentate, pentadentate, or hexadentate ligand and Lis a monodentate, bidentate, tridentate, or tetradentate ligand, or not present, and where the total denticity of Lplus Lis 6, and Lincludes at least one structure of Formula I: is disclosed as a useful phosphorescent emitter compound.

Provided is a process for preparation of a compound of Formula 1 where, ring Y and ring Z are each independently a 5-membered or 6-membered carbocyclic or heterocyclic ring; Zand Zare each independently C or N; each Rand Rindependently represents mono to the maximum possible number of substitutions, or no substitution; x=1, 2, or 3; y=0, 1, or 2; and x+y=3. Disclosed is a chemical synthesis process that involves contacting a compound of Formula 2 with a compound of Formula 3 in an organic solvent to yield a compound of Formula 1 

Imidazophenanthridine ligands and metal complexes are provided. The compounds exhibit improved stability through a linking substitution that links a nitrogen bonded carbon of an imidizole ring to a carbon on the adjacent fused aryl ring. The compounds may be used in OLEDs, particularly as emissive dopants in the emissive region in the OLEDs, providing devices with improved efficiency, stability, and manufacturing. In particular, the compounds provided herein may be used in blue devices having high efficiency.

A compound comprising a ligand Lof Formula I: as well as, devices and formulations containing the compound of Formula 1 are disclosed. In the compounds, having a ligand La of Formula I: wherein Rrepresents mono, or di-substitution, or no substitution; wherein Rrepresents di, tri, or tetra-substitution; wherein R is selected from hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; wherein Rand Rare each independently selected from hydrogen, deuterium, alkyl, cycloalkyl, aryl, and combinations thereof; wherein at least one pair of adjacent Rsubstitutions are joined to form a fused ring; wherein the ligand Lis coordinated to a metal M; and wherein the ligand Lis optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand.

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Ewing, NJ, United States of America

Geza Szigethy