45 results about "Nanocrystalline semiconductors" patented technology

The present invention discloses novel solar cell sensitizers, more specifically, the present invention discloses a general formula D-π with electron donor-π conjugated system-electron acceptor (D-π-A) molecular structure -A-Q-G, the hemicyanine dye that contains sulfonic acid or carboxylic acid, compared with the known hemicyanine dye sensitizer, the degree of conjugation of this type of sensitizer is large, and the nanocrystalline semiconductor solar cell sensitized by it has High conversion rate, good stability and excellent effect.

The invention discloses a dye sensitized solar battery integrated by a threadlike light anode with high specific surface area for efficiently absorbing the light, the solar battery is composed of three layers of structures, wherein the first layer is a super-white glass for packaging a cover board, the second layer is a coating metallic net with high specific surface area as the light anode; the coating metallic net with high specific surface area is the metallic net which resists the corrosion of electrolyte or bandwidth gap nanometer crystal semiconductor oxide thin film that a conducting fiber net is coated through coating procedure as charge separation effect; after heat treatment, the sensitized dye is adsorbed to prepare the second layer; the third layer is a coating metal sheet as pair electrodes; the gap between the super-white glass and the coating metal sheet is packaged to form a sealed space which is replete with the electrolyte having the redox. The solar battery of the invention can efficiently collect the electrons and adsorbs more dye to further improve the light absorption of the light anode, solving the problems of large resistance of the conduction glass substrate which limits the battery efficiency, of preparation in large area and of serial, parallel connections of the assemblies, and further enhancing the efficiency of battery.

The invention relates to prepare dye sensitization nano-crystal semiconductor solar cell light anode with electric spinning, which comprises: spraying the solution contained nano-crystal semiconductor conductive substrate by electric field force to form film with porous nano structure to generate current and photo voltage. This invention needs simple devices with low cost and easy control. The product has high specific surface area and porosity. The prepared objective cell has same efficiency as cell by traditional method.

A solar call is provided along with a method for forming a semiconductor nanocrystalline silicon insulating thin-film with a tunable bandgap. The method provides a substrate and introduces a silicon (Si) source gas with at least one of the following source gases: germanium (Ge), oxygen, nitrogen, or carbon into a high density (HD) plasma-enhanced chemical vapor deposition (PECVD) process. A SiOxNyCz thin-film embedded with a nanocrystalline semiconductor material is deposited overlying the substrate, where x, y, z≧0, and the semiconductor material is Si, Ge, or a combination of Si and Ge. As a result, a bandgap is formed in the SiOxNyCz thin-film, in the range of about 1.9 to 3.0 electron volts (eV). Typically, the semiconductor nanoparticles have a size in a range of 1 to 20 nm.

The invention relates to an electroluminescence device, its light-emitting layer and application. The light-emitting layer comprises at least one nanocrystalline semiconductor material, and at least one exciplex; the emission spectrum of the exciplex at least partially overlaps the excitation spectrum of the nanocrystalline semiconductor material; the exciplex The decay lifetime of the excited state of the species is longer than the decay lifetime of the excited state of the nanocrystalline semiconductor material. During the light-emitting process of the light-emitting layer of the present invention, the exciplex that forms delayed fluorescence can effectively transfer energy to the nanocrystal semiconductor material, thereby obtaining a light-emitting layer of a QLED device with high light-emitting efficiency and stability.

The invention relates to an electroluminescence device, its light-emitting layer and application. The light emitting layer comprises at least one nanocrystalline semiconductor material, and at least one organic light emitting material; the emission spectrum of the organic light emitting material overlaps at least partially the excitation spectrum of the nanocrystalline semiconductor material; the excited state of the organic light emitting material The decay lifetime is greater than 1 microsecond. The present invention innovatively uses an organic luminescent material with a long excited state lifetime, specifically an excited state decay lifetime exceeding 1 microsecond, as the host material, so that the energy of the organic luminescent material can be effectively transferred to the nanocrystal semiconductor material to obtain a High-performance QLED devices can greatly improve the efficiency of electroluminescent devices that use nanocrystalline semiconductor materials as luminescent active components.

A solar cell comprises a transparent glass tube with multiple metal wires plated by film being material of wide band gap nanosemiconductor film oxide for separating electric charge. It is featured as utilizing metal wires as light positive electrode of solar cell after they are connected in parallel and led out, placing pair electrode in tube to undertake function of catalysis and electronic transmission, filling electrolyte in the tube and using seal glue to package the tube.

The invention is an all-solid nano crystal solar battery and making method. It smears the plasm of semiconductor nano material on the transparent base piece of the electric thin film, then making high-temperature sintering to prepare wide-band semiconductor nano crystal thin film, and then immerge in the solution to obtain sensitized dye nano crystal semiconductor electrode as anode; uses electric polymer or inorganic / electric polymer cooperative system as P-type material to smear the anode, and uses the electric base piece plated with Pt or Au as pair electrodes to compose the solar battery.