Eastman-kodak Company

City University of Hong Kong

Liang-sun Hung

Dilip K Chatterjee

Gustavo R Paz-Pujalt

Ching W Tang

James Michael Chwalek

Anna L Hrycin

John A Agostinelli

Jose M Mir

Joseph K Madathil

Longru Zheng

Shuit-Tong Lee

Chun-Sing Lee

Yann Hung

Rajinder P Khosla

Zhi-Qiang Gao

Zhiyuan Xie

Baoxiu Mi

Duncan A Richards

S Tong Lee

An organic light-emitting device capable of reducing ambient-light-reflection from a cathode includes a light-transmissive substrate, a light-transmissive anode, an organic light-emitting structure, a semi-transparent cathode having a work function below 4.0 eV and a refractive index greater than 1, and a multilayer structure, which is combined with the cathode to reduce reflection of ambient-light entering the device.

Organic light-emitting device with reduction of ambient-light-reflection by disposing a multilayer structure over a semi-transparent cathode

Compounds of formula [I]wherein each Rto Ris independently selected from the group consisting of halogen atoms, cyano, isocyano, mercapto, amino, carbonyl, carboxy, sulfone, nitro and hydroxy groups, and optionally substituted alkyl, alkenyl, alkynyl, haloalkyl, hydroxyalkyl, aryl, alkoxy, aryloxy, alkylamino, arylamino, alkylarylamino, amide, alkylthio, arylthio, alkoxy carbonyl, siloxy, cyclic hydrocarbon or heterocyclic groups; each x is independently zero, one, two or three; each y is independently zero or one; and each z is independently zero, one, two or three are useful in organic electroluminescence devices. Such compounds are disclosed herein, as well as organic electroluminescence devices using the compounds in the emissive layer.

Red-emitting organic electroluminescent elements

A low-voltage organic light-emitting device has a light-transmissive hole-injecting electrode on a light-transmissive substrate, and formed over the hole-injecting electrode, in sequence, an organic hole-transporting layer, an organic light-emitting layer, a bi-layer interfacial structure, an electron-transporting layer having an electron affinity higher than an electron affinity of the light-emitting layer, and an electron-injecting electrode. The bi-layer interfacial structure provides effective electron transport from the electron-transporting layer to the light-emitting layer.

Low-voltage organic light-emitting device

A fluorocarbon based conductive polymer and method of making such polymer are disclosed. The conductive polymer is advantageously used in electroluminescent devices.

Conductive fluorocarbon polymer and method of making same

A thin non-conductive fluorocarbon polymer layer is advantageously used in electroluminescent devices. The polymer is produced by plasma polymerization of a fluorocarbon gas in a RF plasma

Organic electroluminescent device with a non-conductive fluorocarbon polymer layer

An organic EL device, includes an anode, an anode, an organic hole transporting layer over the anode, an organic luminescent layer on the organic hole transporting layer, an inorganic electron transporting layer over the organic luminescent layer, and a cathode on the electron transporting layer.

Organic electroluminescent device with inorganic electron transporting

Fluorination can be used to neutralize transition metal impurities in Si. Fluorine is incorporated into the near-surface region of Si by implantation or annealing in a fluorine containing ambient. Thermal treatments at appropriate temperatures are used to initiate the interdiffusion and reaction between fluorine and metal contaminants. The impurities readily react with fluorine to form a compound or complex, thus significantly reducing the number of mid-gap impurities.

Metal impurity neutralization within semiconductors by fluorination

An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation is converted into visible or visible and ultra violet light. The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.

Device for converting invisible and visible radiation to visible light

An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation and visible light are converted to ultraviolet and visible light. The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.

An electroluminescent device comprising an anode, an electroluminescent layer, and a cathode. The cathode includes a fluoride layer contacting the electroluminescent layer, a conductive layer contacting the fluoride layer, and the thickness of the fluoride layer being selected so that the bilayer acts as an electron injecting contact, the bilayer providing stability against atmospheric corrosion.

Bilayer eletron-injeting electrode for use in an electroluminescent

An electroluminescent device containing a transparent electron-injecting electrode is disclosed. The electrode includes a thin nonconductive layer contacting the electroluminescent layer, a conductive transparent overcoat layer, and the thickness of the nonconductive layer being selected so that the bilayer acts as an electron injecting contact, the bilayer providing stability against atmospheric corrosion.

Transparent electron-injecting electrode for use in an

An electrode in contact with a n-type semiconductor for use in an electronic or optoelectronic device is disclosed. The electrode includes a non-conducting layer contacting the semiconductor; a conductive layer contacting the non-conducting layer, and the materials and the thickness of the non-conducting layer being selected so that the bilayer forms a low-resistance contact to the semiconductor, the bilayer providing stability against atmospheric corrosion.

Bilayer electrode on a n-type semiconductor

An electroluminescent device (10) has a bottom electrode layer (13) disposed on a substrate (11) for injecting electrons into an organic layer (15); and a top electrode (17), such as ITO, disposed on the organic layer for injecting holes into the organic layer. The bottom electrode is formed of either metal silicides, such as, rare earth silicides, or metal borides, such as lanthanum boride and chromium boride having a work function of 4.0 eV or less. The electrodes formed from either metal silicates, or metal borides provide protection from atmospheric corrosion.

Conductive electron injector for light-emitting diodes

An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation and visible light are convened to ultraviolet and visible light The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.

Method of making a device for converting infrared radiation

A highly oriented thin film of specific barium fluoride materials deposited at low temperatures are useful as Upconversion waveguides.

Growing community of inventors

Webster, NY, United States of America

Liang-sun Hung