Eastman-kodak Company

Global Oled Technology LLC

Nanoco Technologies Limited

Xiaofan Ren

Keith B Kahen

Joseph C Deaton

Shouquan Huo

David J Giesen

Yuan-Sheng Tyan

Liang-Sheng Liao

Christopher T Brown

Cynthia A Pellow

Keith Brain Kahen

An OLED device including a cathode, an anode, and having therebetween a phosphorescent light-emitting layer that contains a light-emitting organometallic complex including a precious metal, a first ligand including an imidazole group and a second nitrogen heterocycle group, and at least one second different ligand.

Emitting complex for electroluminescent devices

An optoelectronic device including two spaced apart electrodes; and at least one layer containing ternary core/shell nanocrystals disposed between the spaced electrodes and having ternary semiconductor cores containing a gradient in alloy composition and wherein the ternary core/shell nanocrystals exhibit single molecule non-blinking behavior characterized by on times greater than one minute or radiative lifetimes less than 10 ns.

Device containing non-blinking quantum dots

An organic light-emitting device comprising an anode; a cathode; a hole-transporting layer disposed between the anode and the cathode; a phosphorescent light-emitting layer disposed between the hole-transporting layer and the cathode, wherein the phosphorescent light-emitting layer includes at least one host and at least one phosphorescent dopant; a first exciton-blocking layer disposed between the hole-transporting layer and the phosphorescent light-emitting layer; wherein the first exciton-blocking layer has a triplet energy greater than the triplet energy of the host in the phosphorescent light-emitting layer; and a second exciton-blocking layer disposed between the first exciton-blocking layer and the phosphorescent light-emitting layer, wherein the second exciton-blocking layer is in contact with the phosphorescent light-emitting layer, and wherein the second exciton-blocking layer has a triplet energy less than the triplet energy of the first exciton-blocking layer.

Phosphorescent oled having double exciton-blocking layers

An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer comprising a phosphorescent emitter represented by Formula (I):LM&#x2003;&#x2003;(I)wherein each L is a cyclometallated ligand with at least one containing a coumarin group, M is Ir or Pt, and n is 3 when M is Ir and 2 when M is Pt. The invention also comprised the compound of formula (I).

Light emitting device containing phosphorescent complex

An OLED device comprises a cathode and an anode and has located therebetween a light-emitting layer comprising a phosphorescent light-emitting material and a host comprising a compound of a tetravalent atom wherein the four groups bonded to the atom are aromatic rings, at least one of which contains an electron-withdrawing group (EWG) substituent comprising at least three atoms, the compound having a triplet energy of at least 2.7 eV and a LUMO energy within 0.6 eV of the LUMO energy of at least one material in an adjacent layer on the cathode side of the light-emitting layer. Particular embodiments include certain tetravalent silicon compounds. The light-emitting layer emits blue light and provides good luminance and reduced drive voltage.

Electroluminescent device

An OLED device comprises a cathode, an anode, and located therebetween a light emitting layer containing a compound represented by formula (I): wherein

Organic phosphorescent light emitting device

An OLED device comprises a cathode, an anode, and located therebetween a light emitting layer containing a compound represented by formula (I):A-M-B&#x2003;&#x2003;(I)wherein wherein

Phosphorescent iridium complexes

An OLED device comprises an anode and a cathode and having therebetween a light emitting layer containing an emissive material, wherein a layer between the anode and cathode contains a phosphineoxide compound bearing two or more tri(hetero)arylphosphineoxide groups, provided these groups are selected to give a compound with a Et&#x2267;2.65 eV.

Growing community of inventors

Rochester, NY, United States of America

Xiaofan Ren