Abstract: An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further includes a molecule of Formula I (shown below) wherein an alkyl substituent at position R?5 results in high efficiency and operational stability in the organic light emitting device.

Abstract: Semiconductor ink is disclosed for use in printing thin film solar cell absorber layer. The semiconductor ink is particularly useful in fabricating multi junction tandem solar cell wherein a high bandgap absorber layer as the top cell and a lower band gap absorber layer as the bottom cell. The ink contains ingredients of IB-IIIA-VIA compound with micron-sized semiconductor as the main building “bricks” and nano-sized semiconductor as the binder to fulfill the formation of smooth semiconductive film with micron-sized crystal grain size. Thus formed ink can be used in direct printing for the fabrication of low cost high performance solar cells.

Abstract: Semiconductor ink is disclosed for use in printing thin film solar cell absorber layer. The semiconductor ink is particularly useful in fabricating multi junction tandem solar cell wherein a high bandgap absorber layer as the top cell and a lower band gap absorber layer as the bottom cell. The ink contains ingredients of IB-IIIA-VIA compound with micron-sized semiconductor as the main building “bricks” and nano-sized semiconductor as the binder to fulfill the formation of smooth semiconductive film with micron-sized crystal grain size. Thus formed ink can be used in direct printing for the fabrication of low cost high performance solar cells.

Abstract: An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further includes a molecule of Formula I (shown below) wherein an alkyl substituent at position R?5 results in high efficiency and operational stability in the organic light emitting device.

Abstract: Copper indium diselenide, copper indium gallium diselenide, and other IB-IIIA-VIA compounds are produced by the liquid deposition on a substrate of a precursor-containing ink, followed by heating to produce the desired material. The precursor containing ink is a mixture of three parts. The first part is plurality of particulates of metal compounds of IB, IIIA. The second part is chalcogen source of selenium, sulfur, or organic chalcogen compounds dissolved in a liquid organic solvent. The third part solution function as viscosity adjustment, as introduction of dopant of sodium ion and/or as ink stabilizer. The precursor ink can be coated on substrate at room temperature and it can be transferred into copper indium (gallium) chalcogenide semiconductor thin film upon baking and a chalcogenization process. The resulting thin film semiconducting material can be incorporated into photovoltaic and other electronic devices.

Abstract: The present invention relates to an organic light emitting device (OLED) in which a binaphthalene derivative is used as the emissive layer and/or one or more of the charge transport layers, or as a host or dopant material for one or more of such layers.

Abstract: A pyrene based compound and its use in an organic light emitting device (OLED) according to the following formula: In the above formula, Z1 represents a hydrogen atom, deuterium atom, oxygen atom, silicon atom, selenium atom, substituted or unsubstituted aryl group, substituted or unsubstituted heteroaryl group, substituted or unsubstituted aryl amine or a combination thereof, and Z2 represents a hydrogen or deuterium atom. One of Y1 and Y2 represents a hydrogen atom, deuterium atom, oxygen atom, silicon atom, selenium atom, a substituted or unsubstituted aryl group, substituted or unsubstituted heteroaryl group, substituted or unsubstituted aryl amine or a combination thereof, and the other of Y1 and Y2 represents a hydrogen or deuterium atom. X1 through X6 independently represent hydrogen atoms, deuterium atoms, alkyl groups or aryl groups, and at least one of X1 through X6 represents a bulky alkyl group or bulky aryl group.

Abstract: An organic light emitting device (OLED) in which an anode includes a gold or gold composition layer under a thin layer of thiol or thiol-derivative. Preferably, the thin layer of thiol or thiol derivative is a self-assembled monolayer so as to enhance interface properties with other layers (such as a hole transporting layer) in the OLED.

Abstract: An organic light-emitting device (OLED) in which pyrylium salt or its derivative, such as thiapyrylium, selenapyrylium, or telluropyrylium, is used as a charge transport material and/or at least a dopant or principal component in a charge transport layers.

Abstract: A compound having a host moiety chemically bonded to at least one guest moiety according to the following general molecular structure: Ho—(L—G)n. Ho represents a host moiety that receives hole and/or electron recombination energy and transfers that energy to a guest moiety; G represents a guest moiety that contains a luminescent chromophore; L represents a chemical moiety that links the host and guest moiety and n is from 1 to 4. The compound can be used in the emissive layer of an OLED, or as a dopant dispersed in a host material that forms the emissive layer, wherein the host material has the same chemical structure as Ho.

Abstract: Fused conjugated polymers having the following general formula wherein X=C or N; R1-R16 is independently selected from H, D, alkyl, alkoxyl, silyl, aromatic ring, fused aromatic ring, heteroaromatic ring, fused heteroaromatic ring, diarylamino group, carbazole, and at least one of them being a crosslinkable group consisting of a vinyl double bond or an azide group are useful in the fabrication of organic light emitting devices.

Abstract: An organic light emitting device (OLED) in which an anode includes a gold or gold composition layer under a thin layer of thiol or thiol-derivative. Preferably, the thin layer of thiol or thiol derivative is a self-assembled monolayer so as to enhance interface properties with other layers (such as a hole transporting layer) in the OLED.

Abstract: A compound having a host moiety chemically bonded to at least one guest moiety according to the following general molecular structure:

Abstract: An organic light-emitting device (OLED) in which pyrylium salt or its derivative, such as thiapyrylium, selenapyrylium, or telluropyrylium, is used as a charge transport material and/or at least a dopant or principal component in a charge transport layers.

Abstract: Spiro-type conjugated polymers having the following general formula 1

Abstract: The present invention relates to an organic light emitting device (OLED) in which a binaphthalene derivative is used as the emissive layer and/or one or more of the charge transport layers, or as a host or dopant material for one or more of such layers.

Abstract: Electron transporting materials and organic light emitting devices utilizing the electron transporting materials, wherein the electron transporting materials are dibenzoquinoxaline compounds, and the devices utilize at least one layer incorporating a dibenzoquinoxaline compound. Dibenzoquinoxaline compounds include dipyridyl substituted dibenzoquinoxaline compounds, diphenyl substituted dibenzoquinoxaline compounds, naphthalene substituted dibenzoquinoxaline compounds, anthrene-dibeanzoquinoxaline compounds, bis(methoxy)phenyl substituted dibenzoquinoxaline compounds, dithiophen-dibenzoquinoxaline compounds, and dibenzoquinoxaline compounds.

Abstract: An organic light-emitting device (OLED) in which a phenanthroline-fused phenazine based compound is used an emissive layer, an electron transport layer, a hole-blocking layer, and/or a host material for a functional dopant.

Abstract: Organic semiconductors consisting of conjugated chromophores wherein one or more hydrogen atoms are deuterated are disclosed. Methods of preparing such organic semiconductors are described. The organic semiconducting compounds exhibit remarkably high luminescence and good thermal stability. Applications of these materials for optoelectronic devices, such as light-emitting devices and photodiodes, with enhanced performance and lifetime are disclosed. The disclosed materials can be used as emissive layer, charge-transporting layer, or energy transfer (i.e. phosphorescence dopant) material in organic light-emitting devices.

Abstract: Organic semiconductors consisting of conjugated chromophores wherein one or more hydrogen atoms are deuterated are disclosed. Methods of preparing such organic semiconductors are described. The organic semiconducting compounds exhibit remarkably high luminescence and good thermal stability. Applications of these materials for optoelectronic devices, such as light-emitting devices and photodiodes, with enhanced performance and lifetime are disclosed. The disclosed materials can be used as emissive layer, charge-transporting layer, or energy transfer (i.e. phosphorescence dopant) material in organic light-emitting devices.