58results about How to "Lower open circuit voltage" patented technology

An anode of a lithium battery includes a composite film, the composite film comprising a carbon nanotube film structure and a plurality of nanoscale tin oxide particles dispersed therein. A method for fabricating an anode of a lithium battery, the method includes the steps of: (a) providing an array of carbon nanotubes; (b) pulling out, by using a tool, at least two carbon nanotube films from the array of carbon nanotubes to form a carbon nanotube film structure; and (c) dispersing a plurality of nanoscale tin oxide particles in the carbon nanotube film structure to form a composite film, and thereby, achieving the anode of the lithium battery.

The present invention relates to method and apparatus for preparing thin films of semiconductor films for radiation detector and photovoltaic applications. In one aspect, the present invention is directed to a method of forming a Cu(In,Ga)(S,Se)₂ layer with substantially uniform Ga distribution. In a particular aspect, the method includes depositing a precursor film on the base, the precursor film including Cu, In and Ga, sulfurizing the precursor film thus forming a sulfurized precursor layer with a substantially uniform Ga distribution, and selenizing the sulfurized precursor layer to reduce the sulfur concentration therein and obtain the Cu(In,Ga)(S,Se)₂ layer with substantially uniform Ga distribution. In a further aspect, the method also includes the step of selenizing the precursor film.

The invention relates to a plasm-aided selenium sulfuration treatment device arranged in a vacuum chamber. The plasm-aided selenium sulfuration treatment device comprises a shell, a cathode plate and an anode plate, wherein the cathode plate and the anode plate are alternately stacked to form a plasm generator, the cathode plate is provided with a groove for fixing a semiconductor film substrate, and small holes are uniformly distributed on the surface of the anode plate which is provided with a gas pipe, an independent internal heating electrode and an anode temperature-measuring point. The process based on the treatment device comprises the following steps of: (1) precasting a metal layer on the semiconductor film material according to the proportions of a chemical formula and then putting in the groove of the cathode plate; and (2) putting in the vacuum chamber to vacuumize, switching on a power supply to heat the cathode plate and the anode plate, switching on a power supply of the plasm generator and adding the mixed gases of selenium or sulfur, hydrogen and argon. The invention has the advantages that selenium ions have high reaction activity, the selenizing reaction of the metal precast layer is complete, the photoelectric conversion efficiency is high, and the substrate has lower heating temperature and is hardly deformed. An electronic mode is adopted to monitor the change of capacitive reactance between the two electrodes, know the conversion development and reduce the defective index of the industrial production.

The invention relates to a method for preparing an iron disulfide/carbon composite positive electrode material for a disposable lithium battery. According to the method, carbon covers the surfaces of iron disulfide particles, the mass percentage of iron disulfide is 75-99.5%, and the mass percentage of carbon is 0.5-25%. The method comprises the following specific steps: mixing pyrite and a carbon source substance according to the mass ratio of (75-95): (5-60), dispersing into a dispersing agent, and carrying out ball milling for 1-10 hours, so as to obtain a mixed paste material; drying the obtained mixed paste material for 1-10 hours in a vacuum drying oven at the temperature of 80-150 DEG C, heating the dried precursor material to the temperature of 300-500 DEG C under the protection of inert gas, maintaining for 1-8 hours, then, cooling to room temperature, and sifting, thereby obtaining the iron disulfide/carbon composite positive electrode material for the disposable lithium battery.

A solar cell module with a perovskite layer is revealed. The solar cell module includes a transparent substrate with a light incident surface and a surface opposite to the light incident surface. A plurality of solar cell units is disposed on the surface and each solar cell includes a transparent conductive layer, a first carrier transport layer, a perovskite layer and a second carrier transport layer. An insulation layer is not only located between the adjacent solar cell units but also covered over the solar cell units. A plurality of conductors is used for electrical connection of the plurality of solar cell units in series. Thus the solar cell module has better open circuit voltage and higher stability owing to connection way of the solar cell units in series and the insulation layer.

The invention provides a doped cerium oxide-based solid oxide fuel cell. The fuel cell comprises an anode support, an anode functional layer containing Ba and/or Sr, an electron blocking layer, an electrolyte layer doped with cerium oxide and a cathode layer, and the above parts orderly contact. The electron blocking layer is formed by co-sintering the anode functional layer and the electrolyte layer. The elements in the anode functional layer are diffused at a high temperature and react with the electrolyte layer in situ at the interface to form the electron blocking layer, which effectively improves the open circuit voltage of the cell, so that the cell can work efficiently and stably in the middle-low temperature range. Compared with the conventional method using the double-layer electrolyte and composite electrolyte, method provided by the invention is simple and effective and realizes superior cell performances. The doped cerium oxide-based solid oxide fuel cell provides a novel idea for promoting the development of middle-low-temperature solid oxide fuel cells.

The invention provides a texturing technology and a diffusion technology of diamond wire solar cell pieces. The technical problems that the antireflection effect of an existing conventional chemical method is not obvious, the cost is increased by more than ten times after the whole set of a black silicon technology is matched and an existing diffusion technology is not matched with a texturing technology of diamond wires are solved. The texturing technology of the diamond wire solar cell pieces provided by the invention comprises the following steps: a, texturing; b, silicon wafer surface washing with ultrapure water; c, alkaline washing; d, silicon wafer surface washing with ultrapure water; e, mixed acid solution washing of hydrofluoric acid and hydrochloric acid; and f, ultrapure water washing and drying. The texturing technology has the advantage of low polycrystalline silicon reflectivity.

A laminated structure of a copper-zinc-tin-sulfur film solar cell and a preparation method thereof are disclosed. The laminated structure of the copper-zinc-tin-sulfur film solar cell comprises substrate glass, a transparent conductive layer deposited on the substrate glass, an n-type buffer layer deposited on the transparent conductive layer, a p-type copper-zinc-tin-sulfur absorbing layer deposited on the n-type buffer layer, a molybdenum sulfide interface layer deposited on a p-type copper-zinc-tin-sulfur absorbing layer, and a metal back electrode layer deposited on the molybdenum sulfide interface layer.

The invention discloses an organic photovoltaic and electroluminescent combined display device and a production method thereof. The display device comprises an organic photovoltaic component and an organic electroluminescent component which are arranged on two sides of the same glass substrate. A metallic cathode of the organic photovoltaic component is connected with an ITO (indium tin oxide) conductive layer of the organic electroluminescent component, and an ITO conductive layer of an anode of the organic photovoltaic component is connected with an ITO conductive layer of the organic electroluminescent component. The organic photovoltaic component is used as a direct-current power source supplying direct-current voltage driving for luminescent devices, the open circuit voltage generated from the organic photovoltaic component is lower, and the driving voltage for the luminescent device is met by a series battery structure formed of multiple blocks. An electronic injection layer of the organic electroluminescent component is a polycrystal LaB6 which is transparent and has lower power function, both top emission and bottom emission of the luminescent devices can be realized, and light emitted from the bottoms of the luminescent devices permeates an Ag electrode layer on the other surface of the glass to be further reflected so that the brightness of light emitted from the tops of the luminescent devices can be enhanced.

The invention discloses a power generating method adopting an ionic thermal motion principle. The power generating method comprises the following steps of: firstly, transferring graphene to a substrate and bonding a graphene film on the substrate; secondly, depositing a conducting material with a work function higher than that of the graphene at one end of the graphene film to obtain a first electrode and depositing a conducting material with a work function lower than that of the graphene at the other end of the graphene film to obtain a second electrode; thirdly, leading out the first electrode and the second electrode at two ends of the graphene film by using two metal wires; and fourthly, holding an ionic salt solution in a container casing, integrally immersing the substrate, the graphene film, the first electrode, the second electrode and the two metal wires in the ionic salt solution and leading the metal wires to the outside of the container casing. The invention also provides a graphene battery manufactured by using the power generating method. The power generating method adopting the ionic thermal motion principle and the graphene battery manufactured by the power generation method have the advantages of safety, reliability, no need of using power for charging, long service life of the graphene battery and no harm to a human body and environment.

The invention discloses a thin film solar cell assembly comprising a substrate, a first unit cell deposited on the substrate and a second unit cell arranged on the first unit cell. The thin film solar cell assembly further comprises an insulation film layer arranged between the first unit cell and the second unit cell and used for enabling the first unit cell and the second unit cell to be insulated, a first isolation channel and a second isolation channel which are arranged at the two sides of the edge of the insulation film layer respectively and are used for enabling the first unit cell and the second unit cell to be connected in parallel. The invention also discloses a preparation method of the thin film solar cell assembly. Through the design of the invention, a high-efficiency film solar cell can be obtained.

The present invention discloses a selenium-doped MXene material and a preparation method thereof, comprising the following steps: (1) adding MXene and an organic selenium source into a dispersant, and stirring to prepare a dispersion with a concentration of 10 mg/ml to 100 mg/ml, wherein a mass ratio of MXene and an organic selenium source is 0.1 to 1:1; (2) transferring the dispersion into a reaction kettle, heating to 110° C. to 230° C., reacting for 10 h to 30 h, and then naturally cooling to a room temperature; and (3) washing the product obtained in the step (2) with a cleaning agent, centrifuging to collect a precipitate, and drying the precipitate under vacuum to obtain the selenium-doped MXene material. The composite material prepared by the present invention has high specific surface area, good electrical conductivity, cycle stability performance, rate performance and high theoretical specific capacity.

The invention relates to a high-efficiency thin-film solar component battery structure and an implementation method thereof, and belongs to the technical field of solar battery application. The technical scheme is as follows: the high-efficiency thin-film solar component battery structure comprises a piece of substrate glass, a front electrode film, a photoelectric absorption layer, a back electrode film, a packaging film and a back board; each photoelectric unit is connected in series to form two or more sets of photoelectric battery parts and then each photoelectric battery part is connected in parallel to form an integral thin-film component structure by adjusting etching times and etching positions of laser isolation channels, namely, each photoelectric unit is connected in series and then connected in parallel to form the integral component battery structure. In the invention, under the precondition that the power is basically not weakened, output voltage of the component can be efficiently reduced by adjusting the series and parallel connection structure among the photoelectric units in the thin-film solar battery component, and the matching flexibility of the thin-film battery component and fittings of a photovoltaic power generation system, such as an inverter, a controller and a storage battery; moreover, the BOS (basic operation system) cost of the system is reduced, and simultaneously the shading resistance performance of the component is efficiently improved.

The invention discloses an intermediate layer suitable for a laminated solar cell, a cell and a preparation method. MXene is adopted as a composite layer of the intermediate layer, good optical transmittance can be achieved while good electrical properties are ensured, and the intermediate layer is provided with a p type selective contact layer/MXene/n type selective contact layer structure. The intermediate layer can be used as an intermediate layer of a perovskite lamination device. According to the invention, the problem of electrical or optical loss of the middle layer of the prepared perovskite/perovskite two-end laminated solar cell can be solved, and the open-circuit voltage and the short-circuit current loss of the laminated device are reduced.

The invention discloses an iron disulfide positive electrode material and a preparation method thereof. The iron disulfide positive electrode material comprises iron disulfide, the surface of the irondisulfide is coated with a metal oxide, and a conductive agent is mixed in the iron disulfide, wherein the mass percent of the iron disulfide is 88%-95%, the mass percent of the conductive agent is 3%-8%, and the mass percent of the metal oxide is 0.5%-4%; the metal oxide is at least one of MgO, ZnO, CuO or TiO2, and the conductive agent is at least one of graphene and carbon nanotubes. The irondisulfide positive electrode material provided by the invention solves the problem that the open-circuit voltage of a battery assembled by the natural iron disulfide is too high.

The invention provides an organic electroluminescent device, and relates to the technical field of organic photoelectrics. The organic electroluminescent device comprises a substrate, an anode, a cathode, and organic matter layers, wherein each organic matter layer includes at least one of an anode modification layer, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transmission layer, an electron injection layer and a cathode modification layer, interposed between the anode and the cathode. By designing a reasonable device structure, by means of combinedusage of the subject and object of the lighting emitting layer, the organic electroluminescent device reduces the open circuit voltage, and improves the generation and utilization rate of excitons, thus improving the light emitting efficiency and the service life of the device. The organic electroluminescent device is excellent in performance and can be widely applied to the field of display and illumination.

The invention provides a method for preparing a lithium-iron disulfide battery anode piece. The method comprises the steps that FeS2 is taken as an active anode material, the size distribution of FeS2 respectively ranges from 0.1um to 1 um and from 10 um to 60 um, and firstly FeS2 is subjected to heat treatment in an inert gas at the temperature from 200 DEG C to 300 DEG C until elemental sulfur content in FeS2 is not higher than 0.3%; then FeS2 with fine granularity is subjected to ultrasonic dispersion at the temperature from 20 DEG C to 40 DEG C with power in a range from 300 W to 800 W; the obtained turbid liquid is added into a binding agent solution, and then the solution is integrally transferred to a mixture of FeS2 with coarse granularity and a conductive agent, and the mixture is uniformly stirred; and finally the anode piece is formed by the obtained anode paste according to working procedures of coating, press rolling and piece making, and then a lithium-iron disulfide battery is further prepared. A mass ratio of the FeS2 with fine granularity to the FeS2 with coarse granularity ranges from 1:99 to 1:4. According to the lithium-iron disulfide battery prepared by the method, the open-circuit voltage of the battery is reduced, the discharge platform is lifted, and the high-power discharge performance is improved.

The invention discloses a novel undoped monocrystalline silicon heterojunction solar cell and a preparation method thereof. The solar cell has the following structure: Ag/ITO/MoO3/SiO2/c-Si/TiO2/Al; During the preparation, the silicon wafer is washed first, then the SiO2 passivation layer is deposited successively, the MoO3 is deposited, the TiO2 is deposited on the back side, the aluminum back side is deposited, the ITO is sputtered, and finally the gate line electrode is fabricated. SiO2 is inserted into MoO3/c-Si interfacial layer, and TiO2 is inserted between c-Si/Al. The open-circuit voltage, short-circuit current and conversion efficiency of the device are higher than those of the reference battery.