32results about How to "Broaden the absorption spectrum" patented technology

A composite nanoparticle as the magnetic core carried photocatalyst is composed of the magnetic Fe3O4 nanoparticle as core, SiO2 coated on the surface of said core, and TiO2 carried by said SiO2/FeO4 particle, and is prepared by chemical codepositing method. A method for using said photocatalyst to clean sewage features that the organic pollutants in sewage is deeply oxidized by it to generate CO2 and H2O. Its photocatalyzing apparatus is composed of high-pressure Hg lamp, quartz sleeve tube, bias electrode, condensing water inlet and outlet, gas distributing plate, said photocatalyst, ring reaction chamber, organic class container, sampling opening and aerating unit.

The invention relates to a preparation method of a single layer molybdenum disulfide and titanium dioxide nano heterojunction. The method includes: firstly subjecting an Si/SiO2 substrate to ultrasonic cleaning, and then performing blow drying; putting a graphite boat loaded with molybdenum trioxide in a high temperature area of a chemical vapor deposition apparatus for heating, putting an Si/SiO2substrate on the graphite boat and conducting vacuum pumping; introducing a protective gas into a closed quartz tube, then performing evacuation, heating a tube furnace, raising the temperature to 700-800DEG C, conducting heat preservation for 5-20min, stopping heating, and performing cooling to room temperature to obtain flake single layer MoS2; dissolving tetrabutyl titanate in anhydrous ethanol, then adding acetyl acetone, and performing stirring at room temperature to titanium dioxide sol; immersing the flake single layer MoS2 in titanium dioxide sol, anhydrous ethanol and deionized waterin order, then using anhydrous ethanol for flushing to remove water attached to the surface, and then conducting annealing in a 500-550DEG C muffle furnace for 1-2h, thus obtaining the single layer MoS2/TiO2 nano heterojunction structure.

This invention provides an organic red fluorescent material and method for making same, belonging to the luminescent and display technology field. This fluorescent material can emit bright red light by the radiation of 450-470nm blue light chip, with the maximum value of the emission spectrum near 613nm. This invented material can be mixed with YAG powder and coated on the blue light chip via carrier resin to improve the colouration index of the white light LED elements.

The invention discloses a method for processing an optical active layer of a polymer solar cell and a polymer solar cell manufacturing method. The polymer solar cell manufacturing method comprises the steps that with glass or flexible plastic serving as a substrate and a transparent conducting film serving as a front electrode, a soluble polythiophene and fullerene derivative blending system is established at indoor temperature in air to serve as the active layer, the volatilization rate of a solvent is regulated by regulating the relation among the indoor temperature, the alternative control spin-coating film formation rotating speed and the alternative control spin-coating film formation time, so that processing of the optical active layer is achieved under the condition that high-temperature heating is not needed, an optical active layer thin film obtained after processing is dried naturally in air, the polythiophene material P3HT is induced to achieve the self-assembly function, and the orderliness of the P3HT is improved. The method for processing the optical active layer of the polymer solar cell and the polymer solar cell manufacturing method have the advantages that the technology is simple, operation is easy, safety and stability are guaranteed, the cost is low, a protective gas atmosphere is not needed, heating annealing is not needed, manufacturing of the polymer solar cell can be completed in a controllable mode at room temperature, the polymer solar cell and the flexible substrate are compatible, and compared with a polymer solar cell manufactured through a conventional heating annealing and solvent annealing technology, the polymer solar cell manufactured through the method has better performance.

The invention relates to the technical field of new energy and discloses a dye-sensitized solar cell. The dye-sensitized solar cell comprises a transparent electrode, a counter electrode, and an electrolyte layer located between the transparent electrode and the counter electrode, wherein a nanometer porous semiconductor film is arranged on the inner side of the transparent electrode, a transparent substrate is arranged on the outer side of the transparent electrode, a counter transparent substrate is arranged on the outer side of the counter electrode, the electrolyte layer comprises mixture liquid of electrolyte and a dye sensitizer, and core-shell structured nano-particles with a surface plasma effect are adsorbed in the nanometer porous semiconductor film. According to the dye-sensitized solar cell containing the nano-particles, provided by the invention, the absorption spectrum is broadened, the light absorption efficiency is improved, and the photoelectric conversion efficiency of the cell is enhanced. The invention further provides a manufacture method of the dye-sensitized solar cell.

The invention discloses a biological detection chip. The biological detection chip comprises a substrate, a metal array layer and a film adsorption layer which are stacked, wherein the metal array layer is positioned on the substrate and is provided with a spacing region for exposing the substrate; the film adsorption layer wraps the metal array layer and the surface of the substrate located in the spacing region, and the film adsorption layer is provided with a hydrophilic surface. Cells and organelles with biological film structures can be adsorbed by utilizing the hydrophilic surface of thefilm adsorption layer, target biomolecules are loaded on a biological film, the surface enhanced infrared absorption spectrum of the target biomolecules can be obtained, and detection and analysis ofthe target molecules are realized. The invention discloses a biosensor, which comprises the biological detection chip, is suitable for detecting film surface biomolecules with complex types, does notdestroy the molecular structure, and is suitable for research of various physiological and pathological processes, drug screening diagnosis and the like. The invention discloses a preparation methodof a biological detection chip, which is simple in preparation process and suitable for preparing the chip for detecting the biomolecules on the surfaces of various films.

The invention provides a taurine substituted bodipy fluorescent compound, and further provides a preparation method of the taurine substituted bodipy fluorescent compound. The method comprises the following steps: reacting 8-(4-position substituted phenyl)-3, 5-diiodo-1, 2, 6, 7-tetra-substituted bodipy and 1,2-disubstituted taurine under the conditions of an additive, a catalyst and a solvent toobtain 8-(4-position substituted phenyl) 3-iodo-5-(2-ethanesulfonic acid) amine)-1,2,6,7-tetra-substituted bodipy and 8-(4-position substituted phenyl) 3,5-bis((2-ethanesulfonic acid) amine)-1,2,6,7-tetra-substituted bodipy. According to the taurine substituted bodipy fluorescent compound, by a cheap metal catalyzed direct C-X/N-H activating method, taurine with biological activity is introducedat a 3,5 activated site of star fluorescent molecule bodipy, and therefore, a novel fluorescent molecule framework is formed.

The invention relates to a linked furan-based n-type conjugated polymer and its application in organic photoelectric device. The conjugated polymer is composed of two parts which are naphthalimide andsubstituted linked furan conjugated structure. The conjugated polymer has wide absorption spectrum and absorption coefficient, and high electronic mobility, and can be applied to the high-efficient organic photovoltaic device as the high-efficient electronic acceptor. The invention designs the D-A copolymerized n-type semiconductor conjugated polymer, the conjugated polymer can greatly improve the absorption coefficient of the polymer, widen the absorption spectrum, greatly improve the light current and efficiency of the battery device; the novel n-type conjugated polymer can reach the short-circuited current as the electronic acceptor, and balance an open-circuit voltage and a filling factor; a full polymer photovoltaic device of which energy conversion efficiency is more than 10% is prepared, and is much better than the battery performance of the existed acceptor.

The invention provides a preparation method and an application of a conjugated molecule based on fluoro-benzo-thiadiazole. The preparation method includes the steps: taking methylbenzene as a solvent;taking tetra (triphenylphosphine) palladium as a catalyst; reacting IDTT-fBT (thiophene-fluorobenzothiadiazole) and 2-((6-fluoro-7-benzo[c] [1, 2 and 5] thiadiazole-4-radical) methylene) propane dinitrile at the temperature of 90-110 DEG C to the conjugated molecule based on the fluoro-benzo-thiadiazole. Compared with the prior art, the benzo-thiadiazole has suitable LUMO (lowest unoccupied molecular orbital) and HOMO (highest occupied molecular orbital) energy levels and excellent planarity, so that a conjugated structure of a molecule can be effectively expanded, a fluorine atom is introduced onto a benzene ring, the charge transfer rate in the molecule can be increased as the fluorine atom has high electronegativity, spectrums are absorbed by the fluorine atom, the conjugated moleculecan serve as a receptor material to prepare solar cell devices, and high performance is acquired.

The invention provides a manufacturing method of a Si nanometer rod/QDs (quantum dots) composite effective silica-based solar cell. A light trapping structure of a one-dimensional Si nanometer rod can remarkably improve light absorption performance of the cell, but surface carrier combination rate of the Si nanometer rod is higher and is a greatest obstacle having an effect on further improving photoelectric conversion efficiency. Quantum dots are combined with the Si nanometer rod so as to form heterojunction due to close contact, quantum confinement effect and multi-exciton effect of the quantum dots are sufficiently utilized, separation and capture efficiency of hot carriers is improved, and photoelectric conversion efficiency of the silica-based solar cell is further improved. The silica-based solar cell is a monocrystalline-silicon, polycrystalline-silicon or microcrystalline-silicone semi-finished product or finished product. Further, the manufacturing method has the advantages of simplicity in process, high material utilization rate and low production cost, and is applicable to industrial massive production.

A printing ink composition includes a metal salt of a metal ion and a counter ion, and a viscosity adjusting agent. The metal ion is present as a metal complex of the metal ion and the viscosity adjusting agent, the viscosity adjusting agent includes at least one functional ligand, where the functional ligand may be a monofunctional ligand having one functional group and multifunctional ligands having more than one functional groups.

The invention discloses 4-(2-thienyl)triphenylamine and derivatives thereof, and a preparation method and application of the 4-(2-thienyl)triphenylamine and the derivatives thereof. The 4-(2-thienyl)triphenylamine and the derivatives thereof have the structure represented by formula (I) or formula (II), wherein X is a halogen atom. The 4-(2-thienyl)triphenylamine and the derivatives thereof have strong absorption ability to ultraviolet rays and can be used as an ultraviolet absorber; moreover, when the 4-(2-thienyl)triphenylamine and the derivatives thereof have the structure represented by the formula (II), the heavy atom effect of the halogen atom can cause fluorescence quenching, so that the 4-(2-thienyl)triphenylamine and the derivatives thereof do not fluoresce and do not affect penetrating light rays, the original light rays can keep an original color, and injuries to human eyes are reduced.