The present invention generally relates to artificial photosystems and methods of their use, for example in artificial photosynthesis, wherein the artificial photosystems comprise one or more light-harvesting antenna (LHA) comprising a conjugated polyelectrolyte (CPE) complex (CPEC) comprising a donor CPE and an acceptor CPE, wherein the donor CPE and acceptor CPE are an electronic energy transfer (EET) donor/acceptor pair.

A vehicular display system includes an electronic control unit (ECU) and a plurality of cameras disposed at the vehicle. The cameras capture image data and provide captured image data to the ECU. The system includes a video display screen and a video mirror display screen that are operable to display video images derived from video images provided by the ECU. When the vehicle is traveling forward at a speed below a threshold speed, the ECU generates rearward view video images derived from image data captured by a rearward viewing camera and provides the rearward view video images to the video display screen. When the vehicle is traveling forward at a speed at or above the threshold speed, the ECU generates rearward view video images derived from image data captured by a rearward viewing camera and provides the rearward view video images to the video mirror display screen.

Disclosed is a quantum dot light emitting device including a ligand-substituted quantum dot light emitting layer with a polymer having amine groups. The introduction of the ligand-substituted quantum dot light emitting layer with a polymer having amine groups changes the energy level of an electron transport layer and enables control over the charge injection properties of the device so that the flow of electrons can be controlled. In addition, the ligand substitution is effective in removing oleic acid as a stabilizer of quantum dots to prevent an increase in driving voltage caused by the introduction of the additional material, achieving markedly improved efficiency of the device. Also disclosed is a method for fabricating the quantum dot light emitting device.

Measurements on organic single crystals reveal remarkable optical and electrical characteristics compared to disordered films but practical device applications require uniform, pinhole-free films. Disclosed herein is a process to reliably convert as-deposited amorphous thin films to ones that are highly crystalline, with grains on the order of hundreds of microns. The disclosed method results in films that are pinhole-free and that possess grains that individually are single crystal domains.

An organic photovoltaic device comprising a polymer: ##STR00001##
and an acceptor. In this organic photovoltaic device, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently selected from the group consisting of: a halogen, a substituted alkyl, an unsubstituted alkyl, a substituted aryl, an unsubstituted aryl, a substituted heteroaryl and an unsubstituted heteroaryl.

The present invention relates to metal complexes and to electronic devices, in particular organic electroluminescent devices, comprising these metal complexes.

A display device has a light-emitting element layer including a plurality of light-emitting elements each of which includes a first electrode, a function layer, and a second electrode, and that emit mutually different colors of light. The function layer includes a first hole transport layer, a light-emitting layer provided on the first hole transport layer, and an electron transport layer provided on the light-emitting layer. The first hole transport layer contains a hole transport material, and the light-emitting layer contains a quantum dot and a ligand coordinating with the quantum dot. The first hole transport layer contains the quantum dot coordinating with the ligand, and the ligand coordinates with the quantum dot so as to prevent the hole transport material from being exposed to the light-emitting layer.

The display device includes light-emitting elements. Each of light-emitting elements includes a light-emitting layer containing quantum dots each including a core and a shell larger in energy gap than the core; and a hole-transport layer, adjacent to the light-emitting layer, containing a p-type doping material and an organic hole-transport material. The plurality of light-emitting elements includes: a first light-emitting element including a first light-emitting layer as the light-emitting layer; a second light-emitting element including a second light-emitting layer as the light-emitting layer; and a third light-emitting element including a third light-emitting layer as the light-emitting layer. A peak wavelength of light emitted by the first light-emitting layer is longer than a peak wavelength of light emitted by the second light-emitting layer. The peak wavelength of the light emitted by the second light-emitting layer is longer than a peak wavelength of light emitted by the third light-emitting layer.

An organic hole transport material according to an embodiment of the present disclosure is an organic hole transport material doped with an acid-base adduct, in which the acid-base adduct is formed by an acid-base reaction involving an acid and a base, and the acid contains hydrogen ions (H.sup.+) and has the formula H.sup.+X.sup.−, where H.sup.+ corresponds to a hydrogen ion, and X.sup.− corresponds to an anion and corresponds to TFSI.sup.−.

Disclosed is a fluorine-substituted Pi(π)bridge selenide polymer acceptor material, its preparation and application. The selenide polymer acceptor material is named PYSe2FT and is synthesized by Knoevenagel condensation reaction and Still cross-coupling reaction; the material PYSe2FT takes a selenium-substituted core donor unit as a main structure, and combines a difluoro-substituted thiophene π-electronic connection unit, where the selenium-substituted core donor unit and the difluoro-substituted thiophene π-electronic connection unit can effectively regulate and control the molecular energy level, so that molecules generate good accumulation, thus making PYSe-2FT an excellent polymer acceptor material.