217 results about "Copper indium diselenide" patented technology

Copper indium diselenide, copper indium gallium diselenide, and other IB-IIIA-VIA compounds are produced by the liquid deposition on a substrate of a precursor-containing ink, followed by heating to produce the desired material. The precursor containing ink is a mixture of three parts. The first part is plurality of particulates of metal compounds of IB, IIIA. The second part is chalcogen source of selenium, sulfur, or organic chalcogen compounds dissolved in a liquid organic solvent. The third part solution function as viscosity adjustment, as introduction of dopant of sodium ion and/or as ink stabilizer. The precursor ink can be coated on substrate at room temperature and it can be transferred into copper indium (gallium) chalcogenide semiconductor thin film upon baking and a chalcogenization process. The resulting thin film semiconducting material can be incorporated into photovoltaic and other electronic devices.

A MOS or CMOS sensor for high performance imaging in broad spectral ranges including portions of the infrared spectral band. These broad spectral ranges may also include portions or all of the visible spectrum, therefore the sensor has both daylight and night vision capabilities. The sensor includes a continuous multi-layer photodiode structure on a many pixel MOS or CMOS readout array where the photodiode structure is chosen to include responses in the near infrared spectral ranges. A preferred embodiment incorporates a microcrystalline copper indium diselenide/cadmium sulfide photodiode structure on a CMOS readout array. An alternate preferred embodiment incorporates a microcrystalline silicon germanium photodiode structure on a CMOS readout array. Each of these embodiments provides night vision with image performance that greatly surpasses the GEN III night vision technology in terms of enhanced sensitivity, pixel size and pixel count. Further advantages of the invention include low electrical bias voltages, low power consumption, compact packaging, and radiation hardness. In special preferred embodiments CMOS stitching technology is used to provide multi-million pixel focal plane array sensors. One embodiments of the invention made without stitching is a two-million pixel sensor. Other preferred embodiments available using stitching techniques include sensors with 250 million (or more) pixels fabricated on a single wafer. A particular application of these very high pixel count sensors is as a focal plane array for a rapid beam steering telescope in a low earth orbit satellite useful for tracking over a 1500-meter wide track with a resolution of 0.3 meter.

The thermal management and method for large scale processing of CIS and/or CIGS based thin film overlaying glass substrates. According to an embodiment, the present invention provides a method for fabricating a copper indium diselenide semiconductor film. The method includes providing a plurality of substrates, each of the substrates having a copper and indium composite structure. The method also includes transferring the plurality of substrates into a furnace, each of the plurality of substrates provided in a vertical orientation with respect to a direction of gravity, the plurality of substrates being defined by a number N, where N is greater than 5. The method further includes introducing a gaseous species including a selenide species and a carrier gas into the furnace and transferring thermal energy into the furnace to increase a temperature from a first temperature to a second temperature, the second temperature ranging from about 350° C. to about 450° C. to at least initiate formation of a copper indium diselenide film from the copper and indium composite structure on each of the substrates.

The present invention relates to a method and device for integrating solar cell on LCD panels for photovoltaic electricity generation for portable electronic devices. According to one embodiment of the present invention, the black matrix region on the color filter substrate in a LCD panel is replaced by a solar cell region. A lens array substrate is coupled between the light source layer and the TFT to focus the backlight to increase the solar cell layer area while maintaining high fill ratio of the LCD pixels. The solar cell material is selected from at least silicon, a single crystal silicon, poly-crystalline silicon, amorphous silicon, gallium arsenide, cadmium telluride, copper indium diselenide, organic/inorganic, or hybrid cells. The substrate material is selected from glass, metal, plastic or polymer.

The invention provides a recovery method of a copper indium gallium selenide thin-film solar panel. The method comprises the steps that: the copper indium gallium selenide thin-film solar panel is crushed into pieces; the pieces are soaked by using a H2SO4+H2O2 system, such that a soaking liquid is obtained; the soaking liquid is filtered, such that a first leachate is obtained; with a first phase ratio of 1, the first leachate is extracted by using an extraction agent; separation is carried out, such that a first extraction liquid and a first raffinate are obtained; the extraction agent is composed of 30% of P2O4 and 70% of kerosene by volume percentage, the extraction and balance time is 5-20min; an HCl solution is adopted as a stripping agent, and the first extraction liquid is striped by using a second phase ratio, such that In and stripping residual liquid are obtained; a reducing agent is added into the first raffinate; when a reduction reaction is finished, crude Se and a second leachate are obtained by filtering; alkali is added into the second leachate, and a pH value is regulated such that the pH value is constantly higher than 14; when a reaction is finished, filtering is carried out, such that a filtering slag comprising a hydroxide of Cu and a water solution comprising Ga are obtained; the alkali is NaOH, the pH value adjustment process is to add the NaOH in the reaction process after pH=14 so that the pH is always kept more than 14 during the reaction process, and the reaction time is kept for 0.5-2h; and the water solution is electrolyzed.

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.

The present invention involves the use of specially formulated polymers into which anti-static and conducting metal additives have been incorporated to create a flexible, optically transparent cover for mechanical protection of the incident light-facing surface of the photovoltaic cells. The polymer coating imparts higher conversion efficiencies to photovoltaic cells and modules and is resistant to the destructive effects of UV. In the preferred embodiment, the surface comprising a flexible optically transparent polymer cover has a relief or “crinkle coat” structure morphology comprising a random set of rounded ridge and valley features that impart higher conversion efficiencies to photovoltaic cells and modules due to a concentration affect.

Application of the present invention yields mono-crystalline photovoltaic modules that have conversion efficiencies as high as 20%, or more, as compared to 13-14% for presently available commercial module designs. Components of the present invention can be used to increase conversion efficiency of mono-crystalline, multi-crystalline and nano-crystalline, as well as amorphous silicon photovoltaic cells and solar cells based on non-silicon systems such as CIGS (copper indium gallium selenide).

An apparatus for deposition of a plurality of elements onto a solar cell substrate comprising: a housing; a transporting apparatus to transport said substrate in and out of said housing; a first tubing apparatus to deliver powders of a first elements to said housing wherein said first tubing apparatus is comprised of a first feeder tube located outside of said housing and joined to said housing; a first source material tube located outside of said housing and joined to said feeder tube; a valves located inside of said first source material tube sufficient to block access between said first source material tube and said first feeder tube; a first heating tube located inside of said housing and connected to said first feeder tube; a second tubing apparatus to deliver powders of a second elements to said housing wherein said second tubing apparatus is comprised of a second feeder tube located outside of said housing and joined to said housing; a second source material tube located outside of said housing and joined to said second feeder tube; valves located inside of said second source material tube sufficient to block access between said second source material tube and said second feeder tube; a second heating tube located inside of said housing and connected to said second feeder tube; a loading station for loading said substrate onto said transporting apparatus; one or more thermal sources to heat said housing and said first heating tube and said second heating tube.

The invention relates to the preparation technology of film solar cell, in particular to a preparation method for a copper indium gallium selenide optical absorption layer. The preparation method comprises the steps of (1) uniformly mixing, stirring and ball-milling selenide of metal copper, indium and gallium or metal copper, indium and gallium and selenium simple substance in stoichiometric ratio, and obtaining copper indium gallium selenide nano particles, of which the particle diameter is 10-10,000nm, wherein the atom molar ratio of Cu: In: Ga: Se is (0.9-1):(0-1): (0-1):2; (2) dispersing the copper indium gallium selenide nano particles in a mixing solution formed by dispersant and film-forming agent; stirring or grinding or magnetically stirring and dispersing the particles so as to obtain CIGS (Copper Indium Gallium Selenide) precursor slurry; (3) coating a substrate with the precursor film, drying the precursor film in the air atmosphere to remove the dispersant and the film-forming agent; and obtaining precursor film; and (4) quickly warming and thermally treating the precursor film in the insert atmosphere to obtain copper indium gallium selenide solar cell optical absorption layer film finished product. The method provided by the invention simplifies the process flow, has high production efficiency and is helpful for environment friendliness and; and the method broadens the idea for large-scale industrialization of CIGS film solar cell.

The invention discloses a flexible metal substrate connected with a back electrode of a solar battery and a fabrication method thereof. The flexible metal substrate has a structure made of stainless steel strip/copper/nickel/nickel-molybdenum alloy, wherein a nickel layer and a nickel-molybdenum alloy coating layer serve as diffusion barrier layers which are both multi-layer coating layers; and the mass content of molybdenum in the nickel-molybdenum alloy coating layer in the diffusion barrier layers is gradually increased from 10% to 80% layer by layer along the growth direction of the coating layer. Therefore, the diffusion of copper and Fe element in the steel strip can be effectively prevented, no new harmful elements are introduced, and the nickel-molybdenum alloy with high molybdenum content can enhance the bonding force between the substrate and a back electrode (Mo layer). Meanwhile, a Cu layer serves as a main current conduction layer, so that the Mo layer is only used as theback contact layer capable of forming good ohmic contact with an absorption layer. The flexible metal substrate used as the substrate of a CIGS (copper indium gallium selenide) solar battery can greatly lower the requirement on the thickness of the Mo layer, and the flexible substrate described in the invention can be manufactured continuously with low cost and high efficiency on a continuous electroplating production line.

The invention discloses a method for preparing a novel conductive indium oxide target and an indium oxide film. A third element is added to an original binary oxide to improve the electric carrier mobility so as to further improve the light transmittance and the electrical conductivity; and the related target is prepared by the combination of casting molding and high-temperature sintering for the first time. Therefore, the uniformity and compactness of the target are improved; an abnormal electric arc in a sputtering process is greatly reduced; the service life of the target is prolonged; the utilization rate of the target is improved; the quality and the performance of the sputtering film are improved; the efficiency of a copper indium gallium selenide (CIGS) solar cell is effectively improved; and the requirements of production are met.

The invention discloses a light absorption layer of a copper indium gallium selenide (CIGS) solar cell and a manufacturing method thereof. The method comprises the following steps of: forming a cuprous sulfide layer by utilizing a sputtering method; forming a plurality of CIGS stacking layers by utilizing a CIGS sol-gel solution in a soaking, rotating, printing or spraying mode by matching with pre-drying; then fusing the cuprous sulfide layer and the CIGS stacking layers to form a CIGS light absorption layer by utilizing quick heating heat treatment so as to form the CIGS solar cell having high photoelectric conversion efficiency and high light absorbancy.

Described herein is a method and liquid-based precursor composition for depositing a multicomponent film. In one embodiment, the method and compositions described herein are used to deposit Germanium Tellurium (GeTe), Antimony Tellurium (SbTe), Antimony Germanium (SbGe), Germanium Antimony Tellurium (GST), Indium Antimony Tellurium (IST), Silver Indium Antimony Tellurium (AIST), Cadmium Telluride (CdTe), Cadmium Selenide (CdSe), Zinc Telluride (ZnTe), Zinc Selenide (ZnSe), Copper indium gallium selenide (CIGS) films or other tellurium and selenium based metal compounds for phase change memory and photovoltaic devices.

The invention discloses a method for preparing a copper indium diselenide film by bipotential phase step electrodeposition under neutral pH value, which comprises the steps that: (1) electrodeposition solution is prepared and pH value thereof is 6.5-7.0; (2) a way of bipotential phase step is adopted for plating a film; (3) the film is evaporated in air at room temperature; (4) the film goes through thermal treatment in argon atmosphere at 400 DEG C for 0.5 hour and a CuInSe2 film with copper pyrite structure being obtained. The method adopts the bipotential phase step electrodeposition method for the first time, takes CuCl2question mark 2H2O, InCl3question mark 4H2O and SeO2 as raw materials and CirNa as a complexing agent, which solves the problem of the deposition of the CuInSe2 film on matrixes which have poor acid and alkali resistance and are easily corrosive such as ZnO, etc. The method is an important part of a film solar battery and is used for solar batteries and a plurality of light sensors, etc.

A preparation method of a thin-film solar cell component comprises the following steps: preparing a molybdenum thin film on a substrate; annealing the molybdenum thin film to form a molybdenum back electrode, wherein the annealing temperature is 400 DEG C to 580 DEG C and the annealing time is 5-15 minutes; and sequentially preparing a copper indium gallium diselenide or copper indium diselenide layer, a buffer layer, a window layer and a transparent conductive thin film on the molybdenum back electrode to form the thin-film solar cell component. In the above method, through annealing treatment, the molybdenum thin film is processed into the back electrode which is excellent in adhesion force, corrosion resistance and electric conductivity and suitable for the thin-film solar cell component. And through the improvement, the working efficiency of a device of the thin-film solar cell component is improved.