The present invention relates to a photocatalyst using a semiconductor-carbon nanomaterial core-shell composite quantum dot and a method for preparing the same, more particularly to a microparticle in which a semiconductor-carbon nanomaterial core-shell composite quantum dot is self-assembled using 4-aminophenol, capable of improving photoelectrochemical response and photoconversion efficiency when used as a photocatalyst or a photoelectrode of a photoelectrochemical device, a photoelectrochemical device using the same and a method for preparing the same.

An organic insulating material and a flexible display device are disclosed. The organic insulating material comprises an acrylic polymer having a cinnamoyl moiety.

Disclosed is a method for manufacturing an inverted organic electronic device. The method includes preparing a substrate having a first electrode; depositing a mixture of a cathode interface material and a photo active material onto the first electrode to form a bilayer or composite layer of a cathode interface layer and a photo active layer, followed by forming an anode interface layer on the bilayer or composite layer; and forming a second electrode on the anode interface layer. According to the present invention, it is possible to achieve simplification of a manufacturing process of an inverted organic electronic device and to provide an inverted organic electronic device having excellent performance by forming a cathode interface layer in the form of a uniform and pinhole-free thin film.

An organic compound represented by general formula (1) is a novel organic compound having an absorption band in the near infrared region, and is useful for infrared absorbing dyes, optical films, and organic electronic devices such as photoelectric conversion elements, wherein R.sup.1 to R.sup.18 each independently represent a hydrogen atom, an aryl group, a heteroaryl group, an alkyl group, a cycloalkyl group, a halogen atom, a hydroxy group, an alkoxy group, a mercapto group, an alkylthio group, a nitro group, a substituted amino group, an amide group, an acyl group, a carboxyl group, an acyloxy group, a cyano group, a sulfo group, a sulfamoyl group, an alkylsulfamoyl group, a carbamoyl group, or an alkylcarbamoyl group; and X represents a substituted or unsubstituted methine group, a silylidyne group, a germylidyne group, a stannylidyne group, a nitrogen atom, a phosphorus atom, an arsenic atom, or an antimony atom. ##STR00001##

The present invention relates to a bias-switchable spectral response high performance PD with multi-mode detection, e.g., dual-mode photoresponses in NIR and visible light ranges. The dual-mode PD has the absorber/spacer type components in its active layer, e.g., a tri-layer configuration of absorber-1 (absorber-1 absorbs the electromagnetic wave of the first wavelength comprising visible light)/optical spacer/absorber-2 (absorber-2 absorbs the electromagnetic wave of the second wavelength comprising IR light). In the presence of IR light, photocurrent generates in the IR light absorbing layer under a reverse bias. In the presence of visible light, photocurrent generates in the visible light absorbing layer under a forward bias. A bias-switchable spectral response PD offers an attractive option for applications in environmental pollution, bio, medical, agricultural, automotive, fishery, food, wellness and security monitoring, detection and imaging in two or different or multiple distinct bands.

A transparent photovoltaic cell and method of making are disclosed. The photovoltaic cell may include a transparent substrate and a first active material overlying the substrate. The first active material may have a first absorption peak at a wavelength greater than about 650 nanometers. A second active material is disposed overlying the substrate, the second active material having a second absorption peak at a wavelength outside of the visible light spectrum. The photovoltaic cell may also include a transparent cathode and a transparent anode.

Small organic molecule semi-conducting chromophores containing a halogen-substituted core structure are disclosed. Such compounds can be used in organic heterojunction devices, such as organic small molecule solar cells and transistors.

A charge transport varnish containing a charge transport substance, an electron-accepting dopant substance, and an organic solvent, wherein the electron-accepting dopant substance contains one or more types selected from naphthalene disulfonic acid, naphthalene trisulfonic acid, and naphthalene tetrasulfonic acid. This charge transport varnish is suitable for forming a hole collection layer that can be used to produce an organic photoelectric conversion element which exhibits high photoelectric conversion efficiency.

Provided is an organic electroluminescence device material, which, in its production, is free from formation of impurities that worsen the performance of organic EL devices, which, in forming an upper layer by coating, does not cause dissolution mixing or swelling mixing, which forms a film of good quality and which contributes toward improving the performance (high durability, and low driving voltage) of organic EL devices. The organic electroluminescence device material is a siloxane compound having a recurring unit represented by the following general formula (1): ##STR00001##

A transparent photovoltaic cell and method of making are disclosed. The photovoltaic cell may include a transparent substrate and a first active material overlying the substrate. The first active material may have a first absorption peak at a wavelength greater than about 650 nanometers. A second active material is disposed overlying the substrate, the second active material having a second absorption peak at a wavelength outside of the visible light spectrum. The photovoltaic cell may also include a transparent cathode and a transparent anode.