7results about How to "Good light response" patented technology

The invention discloses a near-infrared light response ultrathin nanosheet sulfur-doped BiOCl photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. The preparation method comprises the following technical steps: (1) preparing a BiOCl nanosheet; and (2) preparing the sulfur-doped BiOCl nanosheet. By adopting a secondary hydrothermal method and controlling the dosage of thioacetamide and BiOCl nanosheets, the prepared catalyst is an ultrathin nanosheet with uniform morphology, the average size is 70-120nm, the catalyst has light response in a near-infrared light region of 780-1200nm, the light absorption capacity of the catalyst is better, and near-infrared light response can be achieved. The catalyst is applied to catalytic degradation of ENR, the ENR degradation rate under visible light is 66.87%, and the degradation effect is good; under near-infrared light, the ENR degradation rate is 9.25%, and the degradation performance from zero to existence is achieved. The preparation method disclosed by the invention is simple, mild in condition, easy to control, low in raw material consumption, free of complex operations such as centrifugation, low in preparation cost and easy to popularize and apply.

The invention discloses an Au-Mo < 0.1 > W < 0.9 > O < 2.72 > dual-plasmon nanoreactor as well as a preparation method and application of the Au-Mo < 0.1 > W < 0.9 > O < 2.72 > dual-plasmon nanoreactor, Mo < 0.1 > W < 0.9 > O < 2.72 > is taken as a carrier, and 2-10 wt% of Au nanoparticles are loaded. According to the Au-Mo0. 1W0. 9O2. 72 dual-plasmon nanoreactor, Mo0. 1W0. 9O2. 72 serves as a carrier, Au nanoparticles are loaded on the surface, good light response is achieved, adsorption and activation of nitrogen and nitrogen reduction intermediates are improved through the heat-rich electron surface under light excitation, and the photocatalytic nitrogen fixation activity is obviously improved.

An organic composition comprising at least one donor material and at least one acceptor material. The donor material comprises at least one organic conjugated polymer or organic conjugated small molecule. The acceptor material comprises a first acceptor material, and the first acceptor material has a structure as shown in a formula I: # imgabs0 #, and a naphthalene ring group at the tail end of # imgabs0 # can effectively improve the stability of the material. R5, R6, R7 and R8 are substituted with at least one substituent group, so that the energy level of the material can be adjusted, and matching of different donor materials is facilitated. The invention also provides an organic photoelectric component which comprises a first electrode, an active layer and a second electrode. The active layer contains the organic composition. The organic photoelectric component has good light response, dark current, detection degree and photoelectric conversion efficiency, and the stability of the component is good.

This invention provides a prototype infrared detector with integrated metalens, its fabrication method, and an optoelectronic instrument. The prototype infrared detector with integrated metalens, its fabrication method, and the optoelectronic instrument of this invention offer an effective and feasible solution for the industrialization of infrared detectors with integrated metalens, and are beneficial to the development of optoelectronic devices. The prototype infrared detector with integrated metalens of this invention has the advantages of miniaturization and high performance, and is expected to be widely used in scenarios such as integrated miniaturized infrared detection and infrared detection in low-light environments.

The present invention discloses a phototransistor based on platinum diselenide and SOI, a preparation method and its application. The vertical heterostructure and type II energy band arrangement of the PtSe2 / SOI phototransistor enable it to exhibit excellent photodetection performance in a wide spectral range from ultraviolet to near infrared, and the design of the back-gate structure effectively promotes the separation and transmission of photogenerated carriers, thereby improving the light response performance of the photodetector. The preparation method of the phototransistor is simple, low-cost and compatible with silicon processes. The photodetector composed of the phototransistor has excellent characteristics such as zero-bias drive, high response rate, high detection rate, high stability, and wide spectral response, paving the way for a new generation of silicon-based photodetectors.

The application discloses a preparation method of a lead selenide room-temperature mid-wave infrared detector, which comprises the following steps: (1) adopting a magnetron sputtering technology, and depositing a lead selenide film layer on a substrate by using oxygen as a reaction gas; (2) placing the lead selenide film in a horizontal tube furnace to realize high-temperature oxidation in pure oxygen at normal pressure; and (3) placing the lead selenide film in a vertical tube furnace to realize high-temperature iodization in an environment at normal pressure. The lead selenide film is prepared by the magnetron sputtering technology, compared with chemical bath deposition, the film quality is effectively improved, large-area and high-uniformity film preparation is realized, the magnetron sputtering film is subjected to high-temperature "oxidation-iodization" treatment, the magnetron sputtering film has excellent light response to infrared light, the sensitization technology is specific, clear and good in repeatability, the sensitized lead selenide film layer and a top electrode are combined to form a photoconductive type detector, and the device has a room-temperature device specific detectivity of 7.6*10 9 Jones@4.3 mu m, and excellent performance.

The present invention discloses a method for preparing a Co / Cu-MOFs material and an application thereof, and belongs to the field of environmental catalysis technology. The method for preparing the Co / Cu-MOFs material comprises: dispersing a cobalt ion precursor and an organic ligand in an organic solvent, then adding copper foam, and performing a hydrothermal reaction. The product of the hydrothermal reaction is washed, centrifuged and dried to obtain a Co-loaded Cu-based MOFs material, which is annealed to obtain the Co / Cu-MOFs material. The Co / Cu-MOFs material is used to treat volatile organic pollutants under light. Compared with the prior art, the Co / Cu-MOFs material of the present invention has a large surface area, a multi-level pore structure, and the doping of single-atom Co can accurately control the electronic structure of the carrier, thereby effectively improving the catalyst's absorption of visible light and its ability to activate molecular oxygen.