Abstract: An organic light emitting device (OLED) comprising an anode, an organic emissive layer, a cathode, and an ion-complexing material layer, and a display using the OLED, are provided. The ion-complexing material layer is arranged between the anode and the cathode.

Abstract: The present invention describes organic solvent-soluble Diels-Alder adducts of polycyclic aromatic compounds, such as, oligothiophene, perylene, benzo[ghi]perylene, coronene and polyacenes, with variety of dienophiles containing at least one heteroatom and in some cases two heteroatoms bonded to aromatic moiety, such as, thioxomalonates, azodicarboxylates, thialdehyde, acylnitroso and N-sulfinylamides. The Diels-Alder adducts are prepared by a simple, one step cycloaddition reaction of the polycyclic aromatic compounds, such as, pentacene, or other fused aromatic compounds, with heterodienophiles. The Diels-Alder adducts according to the present invention all form soluble adducts with pentacene and can be converted back to pentacene by retro-Diels-Alder reaction at moderate (60-250° C.) temperatures both in bulk, in solution or as thin-films.

Abstract: An objective is to provide an organic thin film transistor material exhibiting an excellent property as a transistor together with reduced aging degradation, and also to provide an organic thin film transistor, a field-effect transistor, a switching element, an organic semiconductor material and an organic semiconductor film employing the organic thin film transistor material. Disclosed is an organic thin film transistor material possessing a compound represented by the following Formula (1). where A composed of a condensed ring formed with a 6 membered aromatic cycle or a 6 membered aromatic heterocycle represents C—R, N or P; at least one of As is N or P; R represents a hydrogen atom, a halogen atom or a substituent; and R may be bonded with other Rs with each other to form a ring.

Abstract: A semiconductor memory device and a method of forming the same are disclosed. The semiconductor memory device may include a first electrode. A monolayer is coupled to the first electrode. An organic memory layer is coupled to the monolayer. A second electrode is coupled to the organic memory layer.

Abstract: Conventional light-emitting elements, in particular an organic electroluminescence devices, involve problems resulting from a low light extraction efficiency of 20% or less, because of limitations on light emission set by total reflection angle on an organic layer or transparent electrode as the component, and are demanded to have improved luminance and other optical characteristics which depend on viewing angle. The present invention provides an organic electroluminescence device which can improve a light extraction efficiency and thereby reduce operational current and power consumption by incorporating a laminate of optical thin films of low refractive index and having pores whose size is controlled at a level equivalent to or shorter than visible wavelengths, because the light components totally reflected to become wave-guided or reflected light in a common device can be extracted as light scattered by the pores.

Abstract: A method for making a polymer containing a first repeat unit having formula: —Ar—N(R)—Ar(N(R?)—Ar)x— which may be substituted or unsubstituted where x or 0 or 1; each Ar is the same or different and independently is a substituted or unsubstituted aryl or heteroaryl group and R and R? each is hydrogen or a substituent group and a second repeat unit that is the same or different from the first repeat unit and comprises a substituted or unsubstituted, aryl or heteroaryl group.

Abstract: A spiro-based compound containing cyclopentaphenanthrene and fluorene, which is used for an organoelectroluminescent device and an organoelectroluminescent device having the spiro-based compound. The spiro-based compound containing cyclopentaphenanthrene and fluorene can be easily manufactured to have high solubility, high color purity, and good thermal stability. The spiro-based compound containing cyclopentaphenanthrene and fluorene is suitable as a substance for an organic film, in particular, an emission layer of an organoelectroluminescent device. Further, the spiro-based compound containing cyclopentaphenanthrene and fluorene can be used as an organic dye, or an electron material such as a non-linear optical material.

Abstract: A method for making an organic conjugated monomer, oligomer, polymer or small molecule includes reacting a silyl substituted pi-system compound with a highly fluorinated pi-system compound.

Abstract: There is provided a process for forming an organic electronic device. The process includes the steps: forming a first layer, which includes an electrically conductive material and a fluorinated acid polymer, the first layer having a first surface energy; forming a second layer over the first layer, the second layer having a second surface energy which is greater than the first surface energy; removing selected portions of the second layer, resulting in uncovered areas of the first layer; forming a third layer over the uncovered areas of the first layer. There are also provided electronic devices made using the process.

Abstract: The present invention is related to a cyclopentaphenanthrene-based compound and an organic electroluminescence device using the same. In particular, the cyclopentaphenanthrene-based compound offers several advantages, including easy processibility, high solubility, superior color purity, color stability and thermal stability. Moreover, the cyclopentaphenanthrene-based compound may be used not only as a material for forming an organic layer of an organic electroluminescence device, particularly, a light-emitting layer, but also as a material of an organic pigment or nonlinear optical substance.

Abstract: Semiconducting films are formed on a substrate by coating the substrate with a mixture of a semiconducting material and a substance which results in a Tg of the resulting mixture which is lower than that of the said material, and cross-linking the said material. Multilayer electronic devices may be produced by processes which comprise forming a cross-linked semiconducting film on a substrate in this way and forming a layer on the said film by solution or suspension deposition of a second film forming material in which the cross-linked semiconducting film is substantially insoluble in the solvent or suspending agent used in forming the second film. The invention may be used in making, for example, field effect transistors, light emitting diodes (LEDs), organic solar cells and organic lasers.

Abstract: The present invention relates to novel copolymers, compositions comprising novel copolymers, and electronic devices comprising at least one layer containing the copolymer.

Abstract: Pi-conjugated organoboron polymers for use in thin-film organic polymer electronic devices. The polymers contain aromatic and or unsaturated repeat units and boron atoms. The vacant p-orbital of the boron atoms conjugate with the pi-conjugated orbital system of the aromatic or unsaturated monomer units extending the pi-conjugation length of the polymer across the boron atoms. The pi-conjugated organoboron polymers are electron-deficient and, therefore, exhibit n-type semiconducting properties, photoluminescence, and electroluminescence.

Abstract: A varnish comprising a ground substance consisting of a polymer or oligomer of 200 to 50?104 molecular weight or organic compound of 200 to 1000 molecular weight and a solvent containing a good solvent and a poor solvent whose boiling point (under 760 mmHg) is at least 20° C. lower than that of the good solvent, wherein the ground substance is dissolved in the solvent. Any thin film prepared from this varnish is substantially from generation of foreign matter, so that it can appropriately be used as thin films for electronic devices and those for use in other technical fields.

Abstract: A charge-transporting varnish containing either a charge-transporting substance consisting of a charge-transporting oligoaniline or a charge-transporting organic material consisting of the charge-transporting substance and a charge-accepting dopant and at least one polymer selected from among polyimides and polyimide precursors; and charge-transporting thin films and organic EL devices, made by using the varnish. The varnish can give thin films which little suffer from defects and have high uniformity and flatness and excellent mechanical strengths, heat resistance, and transparency. In particular, the varnish realizes excellent EL characteristics such as low driving voltage, high emission efficiency, and long service life, when used in organic EL devices.

Abstract: An organic semiconductor thin film exhibiting high mobility and a method for preparing the same, and a material for preparing the organic semiconductor thin film by a wet process and a method for preparing the same are provided. Further, an organic semiconductor device excellent in electronic characteristics is provided. A mixture of high purity pentacene and 1,2,4-trichlorobenzene was heated to prepare a homogeneous solution, and a silicon substrate having a pattern of a gold electrode as a source/drain electrode formed thereon was heated to 100° C. and the resultant pentacene solution was spread on the surface of the substrate. When 1,2,4-trichlorobenzene was evaporated, a pentacene thin film was formed. A transistor was formed with the use of the thin film.

Abstract: A device having at least one layer including poly(p-phenylene)s based on 3,6-conjugated and 2,7-conjugated phenanthrene moietie having been synthesized by polycondensation using Ni(O)-mediated Yamamoto-type cross coupling are described as the charge transport layer or as the host for a dopant.

Abstract: A main chain-type or side chain-type polymeric compound having a structure wherein at least one metal complex segment having a plurality ligands is introduced into a main chain or a side chain is provided. In the case where the polymeric compound is the main chain-type polymeric compound, the metal complex segment has at least one ligand constituting a polymer main chain of the polymeric compound and having a carbon atom and oxygen atom bonded to a metal atom. On the other hand, in the case where the polymeric compound is the side chain-type polymeric compound, a polymer main chain thereof has a conjugated structure, preferably a conjugated double bond. A ligand for the polymeric compound includes a chain or cyclic ligand, of which a bidentate ligand having an organic cyclic structure is preferred, and the ligand has at least one carbon atom or oxygen atom and is bonded to a center metal atom, preferably iridium, via the carbon atom or oxygen atom.

Abstract: The present invention relates to a spiro-compound for an electroluminescence display device and an electroluminescence display device including the same. More particularly, the present invention relates to a spiro-compound comprising at least one selected from the group consisting of a compound represented as the following Formulae 1 and 2 and an electroluminescence display device including the same: In the above Formulae 1 and 2, the definition of the substituents is the same as in the specification. The spiro-compounds represented by the above Formulae 1 and 2 are applicable to any one of a hole injection layer (HIL), a hole transport layer (HTL), an electroluminescent layer, an electron transport layer (ETL), and an electron injection layer (EIL) of the electroluminescence display device. The spiro-compound can realize various colors with low energy, emit blue light even at a low voltage, and have an advantage of excellently increasing luminance and luminous efficiency.

Abstract: It is an object to provide a conductive organic thin film having organic molecules that include at one end a terminal bonding group that is covalently bonded to a substrate surface, a conjugate bonding group that is located at any portion of the organic molecules and that is polymerized with other molecules, and a polar functional group that does not include active hydrogen and that is located at any portion between the terminal bonding group and the conjugate bonding group, wherein the organic molecules are oriented and their conjugate bonding groups are polymerized, forming a conduction network. The conductivity (?) of the conductive organic thin film at room temperature (25° C.) is at least 5.5×105 S/cm, and preferably at least 1×107 S/cm, without dopants, having significantly higher conductivity than metals such as gold and silver. In particular, a film of polypyrrole or polythienylene conjugate bonds that is polymerized through polymerization through electrolytic oxidation has high conductivity.

Abstract: It is an object to provide a conductive organic thin film having organic molecules that include at one end a terminal bonding group that is covalently bonded to a substrate surface, a conjugate bonding group that is located at any portion of the organic molecules and that is polymerized with other molecules, and a polar functional group that does not include active hydrogen and that is located at any portion between the terminal bonding group and the conjugate bonding group, wherein the organic molecules are oriented and their conjugate bonding groups are polymerized, forming a conduction network. The conductivity (?) of the conductive organic thin film at room temperature (25° C.) is at least 5.5×105 S/cm, and preferably at least 1×107 S/cm, without dopants, having significantly higher conductivity than metals such as gold and silver. In particular, a film of polypyrrole or polythienylene conjugate bonds that is polymerized through polymerization through electrolytic oxidation has high conductivity.

Abstract: A polymer light emitting material which contains a polymer compound comprising a repeating unit of the following formula (1) or (2) and having a polystyrene-reduced number-average molecular weight of 103 to 108, and which exhibits light emission from the triplet excited state. [wherein Ar1 and Ar2 each independently represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group. X1 and X2 each independently represent O, S, C(?O), S(?O), SO2, C(R1)(R2), Si(R3)(R4), N(R5), B(R6), P(R7) or P(?O)(R8). X1 and Ar2 bond to adjacent carbon atoms in the aromatic ring of Ar1; and X2 and Ar1 bond to adjacent carbon atoms in the aromatic ring of Ar2]; [wherein Ar3 and Ar4 each independently represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group. X3 and X4 each independently represent N, B, P, C(R9) or Si(R10). X3 and Ar4 bond to adjacent carbon atoms in the aromatic ring of Ar3; and X4 and Ar3 bond to adjacent carbon atoms in the aromatic ring of Ar4].

Abstract: The present invention provides an organic field-effect transistor (OFET) and a method of fabricating the OFET. The OFET, configured to function as a p-type semiconductor, includes a substrate having a top surface and a semiconductor layer located over the top surface. The semiconductor layer comprises organic semiconductor molecules. Each of the organic semiconductor molecules includes a core having conjugated pi bonds, a fluorinated alkyl group, and an alkyl spacer group having a chain of two or more carbon atoms. One end of the chain is bonded to the fluorinated alkyl group and another end of the chain is bonded to the core. Substituents coupled to the carbon atoms have an electronegativity of less than about 4.

Abstract: The invention provides an organic light-emitting polymer having the structure of formula (I): wherein each of the substituents is as defined in the specification and the attached claims. The organic light-emitting polymer can be used in the manufacture of organic light-emitting diode elements.

Abstract: A polymer comprising a first repeat unit of formula (I), wherein each Ar is independently selected from optionally substituted aryl or heteroaryl and the group of formula (I) is present in a molar ratio of less than or equal to 10%, and, optionally, a second, optionally substituted repeat unit having a single nitrogen atom in its backbone of formula —Ar—N(Ar)—Ar— in a molar ratio of no greater than 5%.

Abstract: Novel pentaphenylenes having the following general formula are described; These polymers generally exhibit blue electroluminescence and are useful in electronic devices.

Abstract: Novel pentaphenylene copolymers which are useful in electronic devices are described.

Abstract: A blue electroluminescent polymer having a phenoxazine-based unit in a polyarylene backbone and an organic electroluminescent device using the polymer. The organic electroluminescent device has improved luminous efficiency and color purity.

Abstract: A blue-emitting polymer in which a bisindenospirofluorene unit is incorporated in a polyarylene polymer backbone, and an organic EL device using the blue-emitting polymer as a light-emitting material. The organic EL device exhibits excellent emission efficiency, low turn-on voltage, good color stability and color purity.

Abstract: The invention relates to a semiconductor device having a semiconductor path made from an organic semiconductor material. Semiconductor particles or semiconductor clusters are distributed randomly in the organic semiconductor material. The semiconductor particles and/or semiconductor clusters can also be linked by linker molecules. The addition of semiconductor particles to the organic semiconductor material makes it possible to improve the electrical properties, for example, of a field-effect transistor has a semiconductor path of this nature.

Abstract: Luminescent polymers having doubly- or multiply-bridged biphenylene repeat units are provided, which are particularly suited as electroluminescent polymers. Monomers necessary for the synthesis of the multiply bridged biphenylene polymers are provided, as are electroluminescent devices utilizing these polymers.

Abstract: The present invention provides a novel material capable of realizing excellent color purity of blue, a light-emitting element and a light-emitting device using the novel material. The present invention provides an oligonaphthalene derivative represented by the formula (1). The oligonaphthalene derivatives of the present invention have an extremely large band gap, can emit light with extremely short wavelength, and can emit blue light with favorable color purity. In addition, a light-emitting element that can exhibit excellent color purity of blue can be obtained by applying this material to the light-emitting element or a light-emitting device; therefore the light-emitting element having superior color reproducibility can be provided.

Abstract: High quantum yield luminescent monomers, oligomers, and polymers, comprising benzotriazole repeating units and derivatives thereof have been discovered and utilized in optical devices and components therefor, including electroluminescent devices, light emitting devices, photoluminescent devices, organic light emitting diodes (OLEDs), OLED displays, sensors, and the like.

Abstract: A blue light polymer containing an indenocarbazole unit in its main polyarylene chain and an organoelectroluminescent device using the same are provided. The organoelectroluminescent device exhibits high luminous efficiency and high color purity.

Abstract: An electroluminescent device comprises a combination of a charge-transporting conjugated donor compound and a acceptor compound, the charge-transporting conjugated donor compound including a conjugated unit comprising a multivalent radical sub-unit having a first and a second unsaturated radical site and a shortest chain of unsaturated atoms connecting the first and the second radical site. The number of unsaturated atoms the shortest chain consists of is an odd integer, preferably 1. Such odd-integer sub-units provide the donor compound with lowest-energy triplet levels which are relatively high in energy which in turn enable the EL device, when the donor compound is combined with a suitable acceptor compound, to emit light with high efficiency. For example, highly efficient green light-emitting electroluminescent devices are obtained in this manner.

Abstract: A first organic EL device in accordance with the present invention comprises a pair of electrodes opposing each other and a luminescent layer, disposed between the electrodes, containing a polymer having an anthracene structure; and a hole-transferring compound having a glass transition temperature of at least 70° C. A second organic EL device in accordance with the present invention comprises a hole injection electrode and an electron injection electrode which oppose each other; a luminescent layer, disposed between the hole injection electrode and electron injection electrode, containing a polymer having an anthracene structure and having a modified part, disposed near the surface on the side closer to the electron injection electrode, containing a hole-blocking compound having a bandgap of at least 4.0 eV; and an electron-blocking layer, disposed between the hole injection electrode and the luminescent layer, containing a hole-transferring compound having an electron affinity of 3.0 eV or less.

Abstract: The present invention is generally directed to semiconducting compositions containing a guest material and a light emitting organic host material. These compositions are useful for color tuning and improving efficiency in an electroluminescent device. It further relates to a process for preparing the compositions and the layers and devices that are made with the compositions.