Disclosed is a new class of photo-responsive coordination compounds with at least one photochromic unit on a coordinating ligand. The photo-responsive coordination compounds are shown to be capable of acting as electroactive materials for the fabrication of organic memory devices as well as photo-controllable electron-transporting materials.

The present specification relates to a photoactive layer including: an electron donor; and an electron acceptor, in which the electron donor includes: a single molecular material; and a polymer material, and the single molecular material is represented by Formula 1, and an organic solar cell including the same.

A photodetection device is configured to detect light and the photodetection device includes a substrate having a largest surface; a dielectric formed over the largest surface of the substrate; a first metallic electrode formed on the dielectric; a second metallic electrode formed on the dielectric, at a given distance from the first metallic electrode, to form a channel; and a single-crystal linear-chain polyfluorinated dibromo-platinum(II) diimine complex located in the channel.

An energy converting device includes a base, which is fixed; a methylammonium lead bromide (MAPbBr.sub.3) material having a first end fixedly attached to the base and a second end free to move; and an actuator block attached to the second end of the MAPbBr.sub.3 material. The actuator block moves relative to the base when the MAPbBr.sub.3 material is exposed to light.

A method of forming a photovoltaic device comprising a perovskite photovoltaic cell, particularly a method of forming a perovskite solar cell (PSC), is disclosed having a hole transport layer comprising an additive that may result in one or more of reduced formation of crystalline domains in the hole transport layer; reduced size of pinholes in the hole transport layer; improved dopant homogeneity and increased hydrophobicity of the hole transport layer. Also disclosed are PSCs so formed, showing one or more improved properties.

The present disclosure relates to a solar battery. The solar battery comprises a semiconductor structure, a back electrode, and an upper electrode. The semiconductor structure defines a first surface and a second surface. The semiconductor structure comprises an N-type semiconductor layer and a P-type semiconductor layer. The back electrode is located on the first surface. The upper electrode is located on the second surface. The back electrode comprises a first carbon nanotube, the upper electrode comprises a second carbon nanotube, and the first carbon nanotube intersects with the second carbon nanotube. A multilayer structure is formed by an overlapping region of the first carbon nanotube, the semiconductor structure and the second carbon nanotube.

A solid-state image sensor is provided. The solid-state image sensor includes a semiconductor substrate having photoelectric conversion elements. The solid-state image sensor also includes an isolation structure disposed between the photoelectric conversion elements. The solid-state image sensor further includes a color filter layer disposed above the semiconductor substrate and having color filter segments that correspond to the photoelectric conversion elements. Moreover, the solid-state image sensor includes an organic film disposed above the color filter layer. The solid-state image sensor also includes an upper electrode and a lower electrode respectively disposed on the upper side and the lower side of the organic film. The solid-state image sensor further includes nano-structures disposed on the upper side or the lower side of the organic film.

An organic semiconducting compound and an organic photoelectric component containing the same are provided. The organic semiconducting compound has a novel chemical structure to make the organic semiconducting compound have good response to the infrared light. The organic semiconducting compound can be applied to the organic photoelectric components such as organic photodetector (OPD), organic photovoltaic (OPV) cell, and organic field-effect transistor (OFET). Thus, the organic photoelectric components have better light absorption range and photoelectric response while in use.

A metal-organic chalcogenolate (MOC) includes silver phenylselenolate functionalized with at least one functional group. The functional group may be methyl (CH.sub.3), dimethylamine (N(CH.sub.3).sub.2), thiomethyl (SCH.sub.3), fluoro (F) trifluoromethyl (CF.sub.3), cyanide (CN), carboxy (COOH), nitrito (NO.sub.2), or alkoxy (OC.sub.xH.sub.y). The MOC can be in the form of a single crystal consisting essentially of a nanocluster (0D), a nanotube (1D), or a single monolayer (2D).

The present invention provides a method of forming a crystalline or polycrystalline layer of an organic-inorganic metal halide perovskite material comprising a three-dimensional crystal structure represented by the formula AMX.sub.3, in which A represents an organic cation or a mixture of two or more different cations, at least one of which is an organic cation, M represents a divalent metal cation or a mixture of two or more different divalent metal cations, and X represents halide anions which are the same or different, the method comprising the steps of: (i) forming a first layer on the surface of a substrate, the first layer comprising an organic-inorganic metal halide perovskite material having a planar, layered two-dimensional crystal structure (ii) reacting the first layer with one or more organic halides to form the crystalline or polycrystalline layer comprising an organic-inorganic metal halide perovskite material having the formula AMX.sub.3. Also provided is an optoelectronic or photovoltaic device including an active layer comprising an organic-inorganic metal halide perovskite material comprising a three-dimensional crystal structure represented by the formula AMX.sub.3, wherein the material is obtainable using the above defined method.