40results about How to "Increase the chance of occurrence" patented technology

The invention discloses a method for preparing a thin-film solar photovoltaic cell with a copper indium gallium selenide (CIGS) nano wire array structure. The method comprises the following steps of: growing a large-area cuprous sulfide or copper sulfide nano wire array by adopting a gas-solid reaction method, and converting the cuprous sulfide or copper sulfide nano wire array into a CIGS nano wire array by physical vapor deposition and heat treatment methods. The component, the phase structure and the energy band structure of the semiconductor nano wire array can be regulated by controlling the categories of deposition elements, the deposition sequence, the deposition process, post treatment and the like, so that solar photovoltaic cells with different structures and properties are prepared. Through the cell, light reflection is reduced, light absorption is increased, the probability of producing current carriers can be increased, the probability of recombination of holes and electrons is reduced, and the photoelectric conversion efficiency is greatly improved. The method is low in cost, the preparation processes are controllable, the prepared nano wire array is uniform in structure distribution, and preparation of the nano structural thin-film solar photovoltaic cell with large area and high photoelectric conversion efficiency can be realized.

A non-polarized discharge liquid treating device and treatment are disclosed. Plated electrode (7) and plated electrode (8) are discharging in liquid-phase, gas-liquid phase or gas-liquid mixed phase to realize high-voltage discharging plasma by high-voltage pulse or DC, heat-resistant insulating board (14) with hole (13) focuses electric field to locality, which makes local electric filed a certain height. It can realize plasma discharge, produce shock wave, ultraviolet ray and various active free radicals and remove various pollutants effectively. It's efficient and has no electrode melt.

The invention discloses a method for efficiently inducing jujube tree 2n pollen, which comprises the steps of: with colchicines as mutagen, firstly, cutting a jujube fruit-bearing shoot base part to be induced, covering a wound with absorbent cotton; and secondly, dropping the colchicines medicine liquid into the absorbent cotton to ensure that a jujube fruit-bearing shoot absorbs the medicine liquid into the xylem through the minimally invasive wound and conveys the medicine liquid upwards to stop spindle fibers in the young bud in a process of reductional division of pollen mother cells from forming and induce the pollen chromosome doubling so as to obtain the high-activity 2n pollen. The method is applied to the induction of the jujube high-activity 2n pollen, is simple and convenient, and has high induction efficiency.

The invention relates to a copper-indium-gallium-selenium thin film battery and a preparation method. The copper-indium-gallium-selenium thin film battery comprises a glass substrate, a metal back electrode layer, a light absorption layer, a buffer layer, a barrier layer and a window layer which are sequentially laminated, wherein the surface of each of the glass substrate, the metal back electrode layer, the light absorption layer, the buffer layer, the barrier layer and the window layer has suede with the same roughness. The surface of the glass substrate of the copper-indium-gallium-selenium thin film battery has the suede, and the grown thin film battery has an uneven surface, thereby functioning in trapping light. When sunlight is incident, the incident sunlight may form a certain angle with the surface of the battery due to the existence of the suede structure to further increase the probability of generating the photon-generated carriers in P-N junction areas and finally increase photo-generated current.

The invention provides a two-sided welding method for a U-shaped ribbed slab unit welding seam. The two-sided welding method comprises the following steps: cleaning the welding surface of a piece to be welded; placing a U-shaped rib on the surface of the piece to be welded, wherein an assembly groove is formed between the end part of a U-shaped ribbed web plate and the surface of the piece to be welded, and the groove angle is 50-60 degrees; carrying out positioning welding on the U-shaped rib and the piece to be welded in the horizontal position to obtain a U-shaped ribbed slab unit; welding a fillet welding seam at the jointing position of the inner side of the U-shaped ribbed web plate and the piece to be welded; and placing the U-shaped ribbed slab unit welded with the fillet welding seam on an anti-deformation slanting tension bed to carry out welding of an outer side welding seam, wherein a process of twin-wire submerged arc welding with single power supply is adopted. According to the two-sided welding method, a jointing welding seam between the U-shaped rib and the piece to be welded is changed into a two-sided fillet welding seam form from a single-sided fillet welding seam form in the prior art, so that stress amplitudes at a weld root and a weld toe are greatly lowered, the problem of initiation of fatigue cracks of the welding seam at the weld root is solved, and the fatigue performance at the weld toe is also improved.

The invention discloses a cement reinforcing agent, a preparation method, and application thereof. The cement reinforcing agent is synthesized by using an amino silane coupling agent for modifying a wet-process-produced white carbon black product through a chemical coupling reaction. Relative to 100 parts by weight of wet-process white carbon black, the chemical modification process needs 500-1300 parts by weight of deionized water, 1-15 parts of a silane coupling modifier, 1-2 parts of an anionic surfactant, and 10-30 parts of an organic solvent. A national standard GB/T17671-1999 method is employed, the addition amount of the product is only 1.0-2.0 parts relative to the cement mass, and compared with 7-day strength of black cement, the strength is improved by about 30 times.

The invention belongs to the technical field of solar photovoltaic cells, and particularly relates to a thin-film solar cell with a micron-nanometer two-stage array structure and a manufacturing method of the thin-film solar cell. The thin-film solar cell comprises a substrate, wherein a back electrode, a p-type semiconductor micron-nanometer two-stage array, an n-type semiconductor layer, a window layer and a metal grid electrode are sequentially arranged on the substrate. An absorbing layer of the thin-film solar cell with the micron-nanometer two-stage array structure is manufactured on the basis of a Cu2S micron-nanometer two-stage array through the chemical bath deposition technology, and the manufacturing method is simple; compared with a method that high vacuum conditions or high temperature conditions are needed for manufacturing the absorbing layer, the manufacturing method has the advantages that the cost is low, the requirements for equipment are low, reactants are easy to obtain, the preparation temperature is low, reaction conditions are easy to control, and the manufacturing method can be conveniently and widely applied.

The invention provides a method for controlling orientation of electrodeformation of a ferroelectric single crystal. The method for controlling the orientation of the electrodeformation of the ferroelectric single crystal comprises the following steps: bevelling (001) surface of a trigonal ferroelectric single crystal, so as to obtain bevelled single crystal; and initially polarizing the bevelled single crystal in the presence of an external electric field, and then polarizing in the presence of an external reverse electric field, so as to obtain reversely polarized single crystal. The method for controlling the orientation of the electrodeformation of the ferroelectric single crystal has the advantages that the (001) surface of the trigonal ferroelectric single crystal is treated by adopting a bevelling way, so that the surface of the single crystal is not strict (001) in orientation, and ratio of polarization overturn at 109 degrees can be increased when an electric field is turned over up and down. The method for controlling the orientation of the electrodeformation of the ferroelectric single crystal has the advantages that a simple bevelling technology is carried out on a (001)-oriented trigonal ferroelectric single crystal, so that surface normal and a crystal axis are not coincided, symmetry about the surface normal in spontaneous polarization direction is destroyed, and occurrence probability of 109-degree polarization overturn is improved, so that control on the orientation of the electrodeformation is realized. The method for controlling the orientation of the electrodeformation of the ferroelectric single crystal has the advantages that warming-assisted polarization is preferred, a single 109-degree domain rotation path can be realized, and an application of ferromagnetic thin film/piezoelectric single crystal heterojunction equal strain regulation is facilitated.

The invention relates to a dwarf peony 2n pollen inducing method which includes the steps: selecting flower buds of 10-20 perennial healthy and strong dwarf peony plants in a red appearing period; disinfecting the flower buds at 7-8 o'clock in the morning and then injecting 5-7g/L dimethyl sulfoxide and 20-30g/L colchicine into the disinfected flower buds by a syringe once a day in three continuous days; sealing a needle hole by paraffin after pulling out the syringe every time. The inducing method is applied to induction of high-activity dwarf peony 2n pollen, simple, convenient and high in inducing efficiency.

The invention discloses a CIGS nanostructure thin-film photovoltaic battery and a preparation method thereof. The method is on the basis of cuprous sulfide or copper sulphide nanowire array prepared by gas solid reaction method, and combines electrochemical deposition method and heat treatment. Components, phase structure and band structure of the nanowire array in a semiconductor can be changed by changing sediment method, ion kinds in an electrolyte, sequences of ion deposition and post treatment in electrochemical deposition, thereby nanowire array solar energy photovoltaic battery of different components is prepared. The battery can reduce reflection of light, increase absorption of light, and simultaneously increase probability of generation of carriers, and reduce probability of recombination of cavities and electrons, realizing great enhancement of the photoelectric conversion efficiency. The preparation method in the invention has the advantages of simple method, low cost and low requirements of equipments, and the method is capable of being applied to large areas conveniently, the photoelectric conversion efficiency of the prepared nanostructure thin-film photovoltaic battery is relatively high.

The invention relates to a method for separating enriched palladium by adopting supermolecule secondary spherical coordination identification. The method adopts the technical scheme as follows: taking a certain amount of sample solution containing palladium, adding an alcoholic solution of protonized dibenzyl amine to the sample solution containing palladium, adding acid to the mixture, standing the new mixture for 5 hours to 24 hours, filtering the new mixture to obtain solid complexes, drying the obtained solid complexes, dissolving the obtained solid complexes with ammonia, extracting the obtained solid complexes with inert organic solvent to separate organic phases; and taking a water phase as a solution for extracting the palladium, wherein the alcoholic solution can be ethanol, tert-butyl alcohol, n-propanol, isopropyl alcohol, carbinol, n-butyl alcohol, isobutyl alcohol or glycol, the acid can be hydrochloric acid, sulphuric acid, nitric acid, acetic acid, p-toluene sulfonic acid, benzene sulfonic acid and trifluoroacetic acid or the mixture of some of the same, and the inert organic solvent can be nitrobenzene, bromobenzene, chlorobenzene, petroleum ether, chloroform, paraffinic oil, coal oil, methylene dichloride, benzene, toluene or dimethylbenzene or the mixture of some of the same. With the method, the palladium can be rapidly separated from other base metals with high efficiency and high selectivity.

The water washing air purification technology is mostly used in the industrial field due to large occupied space, but is a non-mainstream technology in the household field. The problems are mainly caused by the fact that the technical scheme needs high cost and occupies large space. The invention discloses a device for removing harmful substances in air through water washing. The device is of a novel structure and comprises a set of tightly-arranged vertical pipelines. And the upper end surface of the pipeline is closed. A pair of corresponding communicating holes are formed in the side faces of the adjacent pipelines, each pipeline is provided with at least one air inlet communicating hole and at least one air outlet communicating hole, and therefore an up-down roundabout air channel is formed. A plurality of spray headers are arranged on a gas passage which is roundabout up and down to form multi-stage atomization spraying, so that air is subjected to multi-stage water washing in a limited space, particulate matters, formaldehyde and bacteria in the air are effectively removed, and fresh and pleasant air is provided for households.

The invention belongs to the field of lithium ion battery material preparation, in particular to a preparation method of a high-density ternary composite material. A manufacture process comprise thatfollowing steps: At first, that nano cobalt salt and the nano manganese salt are deposited on the surface of the nickel salt as a core by a gas atomization method to obtain a composite body, Then it is added to the ball mill containing alkaline solution and ball milled, then lithium salt is added to ball milled, sintered, and finally carbon-nitrogen material is deposited on the surface of the ballmill by chemical vapor deposition method, and finally the ternary composite material with carbon-nitrogen substance on the surface is obtained. As the ternary composite material prepared by the invention adopts the twice vapor deposition method, the contact area between the materials is increased, the porosity is reduced, the vibrating density of the material is improved, the probability of the nickel material directly contacting with the electrolyte and the outside is reduced, and the cycle performance is improved.