18results about How to "Guaranteed photoelectric conversion efficiency" patented technology

The invention discloses a solar cell and a photovoltaic module, and belongs to the technical field of photovoltaic modules. Comprising a battery piece body, the battery piece body is provided with a first surface and a second surface which are oppositely arranged, and the battery piece body comprises a substrate, a doping layer and a passivation layer which are stacked in sequence; the first grid line pattern area is arranged on the first surface, and first fine grids and second fine grids which extend in the first direction and are alternately arranged in the second direction are arranged in the first grid line pattern area; the protection layer comprises a first protection layer and a second protection layer which extend along a first direction and are alternately arranged along a second direction, the first protection layer comprises a plurality of first protection blocks which are arranged at intervals along the first direction, the second protection layer comprises a plurality of second protection blocks which are arranged at intervals along the first direction, the plurality of first protection blocks are overlapped with the first fine grid, and the second protection blocks are overlapped with the second fine grid; the plurality of second protection blocks are overlapped with the second fine gates; and the overlapped part of the first fine grid and the first protection block penetrates through the passivation layer and is in contact with the doping layer.

The invention discloses a photovoltaic module, a preparation method of the photovoltaic module and a screen printing plate, and belongs to the technical field of photovoltaics. The photovoltaic module comprises a battery piece body, and the battery piece body is provided with a first surface and a second surface which are oppositely arranged. The connecting parts are arranged on the first surface, the connecting parts comprise first connecting parts and second connecting parts, the first connecting parts and the second connecting parts are arranged at intervals in the first direction, and the area of the first connecting parts is larger than that of the second connecting parts; the first bonding layer is arranged on the surface, away from the battery piece body, of the first connecting part, the first bonding layer comprises at least two first bonding strips of a strip-shaped structure, and the at least two first bonding strips extend in the second direction and are arranged at intervals in the first direction; and the electric connecting piece is arranged on the first joint layer, extends along the first direction, is intersected with the at least two first joint strips of the strip-shaped structure, and is electrically connected to the first connecting part through the first joint layer.

The invention relates to the field of photovoltaic technology, in particular to a back contact solar cell and a photovoltaic module. The back contact solar cell comprises a substrate, first areas and second areas which are alternately arranged at intervals in the X direction are formed on the backlight face of the substrate, gaps between the adjacent first areas and second areas form third areas, a first doping layer is formed in each first area, a second doping layer is formed in each second area, and a second doping layer is formed in each second area. A third doping layer is formed in each third region; the doping concentration of the third doping layer is greater than the doping concentration of the first doping layer and the doping concentration of the second doping layer; the third doped layer is electrically connected with the adjacent first doped layer and the adjacent second doped layer. Compared with the prior art, the arrangement of the third doping layer is beneficial to generating leakage current under relatively low reverse bias voltage, so that the hot spot temperature of the assembly is remarkably reduced, the reliability of a single battery and the assembly is improved, and the phenomenon of abnormal concentration of reverse leakage current can be avoided.

This invention discloses a germanium photodetector and semiconductor device. The germanium photodetector includes: a silicon substrate; a first germanium thin film layer deposited on the silicon substrate; the first germanium thin film layer having multiple penetrating dislocations extending through its thickness; multiple pits corresponding one-to-one with the multiple penetrating dislocations formed on the surface of the first germanium thin film layer, and the inner surface of each pit being covered with an amorphous material layer; and a second germanium thin film layer deposited on the surface of the first germanium thin film layer and on the amorphous material layer within each pit, filling each pit. The amorphous material layer effectively blocks the extension of dislocations, reduces dislocation density, and ensures the photoelectric conversion efficiency of the device. Furthermore, by integrating the epitaxial chamber, deposition chamber, and pre-cleaning chamber into the same semiconductor device through a transfer chamber to produce the germanium photodetector, the contact path of external contaminants is reduced, the process flow is simplified, production efficiency is improved, and space and cost are optimized.

The utility model discloses a solar street lamp relates to the technical field of lamps and lanterns, including the lamp pole and a plurality of solar energy institutions, the lamp pole is parallel to the up and down direction, a plurality of solar energy institutions are arranged on the lamp pole along the up and down direction, and the light receiving surface of a plurality of solar energy institutions is perpendicular to the horizontal direction. In the morning, evening etc. When the solar elevation angle is small, the light of low angle oblique incidence and the incident angle of the light receiving surface of the vertical setting of solar energy institution significantly reduce, make the light more close to the front illumination state, the energy loss of traditional horizontal light receiving surface because of the large angle reflection is reduced greatly, effectively improve the photoelectric conversion efficiency of solar energy institution in the morning and evening period, and then be favorable to guarantee the illumination effect of solar street lamp in the morning and evening period.

The invention relates to a high-applicability fan body structure and a using method, the high-applicability fan body structure comprises a first fan frame and a second fan frame, a folding fan face is arranged between the first fan frame and the second fan frame, fixing assemblies are arranged at the ends of the first fan frame and the second fan frame, and each fixing assembly comprises a protruding block arranged at the end of the second fan frame; the end of the first fan frame is rotationally connected with a buckling frame buckled with the protruding block, a telescopic supporting rod is arranged on the first fan frame, the surface, away from the telescopic supporting rod, of the folding fan face is coated with a sun-proof and rain-proof coating, and a user unfolds the folding fan face through the fixing assembly. A user holds the telescopic supporting rod by hand to place the folding fan surface on the top of the head, and the folding fan surface coated with the sun-proof and rain-proof coating is used for shielding sun or rain for the user. The folding fan has the effect of improving the applicability of the folding fan.

The invention provides a solar power generation device for a ship deck, and relates to the field of solar power generation. The solar power generation device for the ship deck comprises an installation frame and a photovoltaic power generation panel which are installed on the ship deck, arc-shaped rails are fixedly installed on the installation frame, an installation base moving along the arc-shaped track of the rails is arranged between the two rails, the photovoltaic power generation panel is installed on the installation base, and a fixing piece is fixedly arranged on the installation base. According to the solar power generation device for the ship deck, ship sailing wind energy is used for driving the impeller, impurities are efficiently shaken off through dual effects, the problem that the impurities on the ship deck shield the photovoltaic panel is solved, two sets of reverse pawl and ratchet mechanisms are adopted, reciprocating swing full-stroke power generation of the mounting base is achieved, energy waste is avoided, and the energy utilization rate is increased; the whole structure does not need extra power, has the advantages of being clean, efficient, sufficient in energy recovery and easy, convenient and economical to operate and maintain, guarantees the photoelectric conversion efficiency, and enhances the ship energy supply capacity.

This invention provides a perovskite solar cell and its fabrication method. The fabrication method of the perovskite solar cell includes the following steps: forming a first electrode layer on one side surface of a substrate; and forming NiO on one side surface of the first electrode layer using a magnetron sputtering process. x The layer uses a nickel oxide target. During magnetron sputtering, oxygen is introduced into the magnetron sputtering chamber at a flow rate of 4.5 sccm to 15 sccm and a temperature of 100°C to 140°C. The aforementioned NiO... x The layer preparation method facilitates the doping of oxygen molecules into the nickel oxide film, thus achieving the desired oxygen doping level without the need for excessive oxygen introduction, and enabling precise control of NiO. x The oxygen content of the layer; the low oxygen content in the magnetron sputtering chamber can prevent NiO. x Excessive oxygen doping in the NiO layer ensures the photoelectric conversion efficiency of the perovskite solar cell; the aforementioned NiO x The layer preparation method also improves the uniformity of oxygen distribution within the magnetron sputtering chamber, thereby enhancing the NiO content. x The uniformity of oxygen doping in the layer improves the performance uniformity of perovskite solar cells.

The utility model belongs to the technical field of solar cell protection, and discloses a perovskite cell protection structure, which comprises a perovskite cell, and the perovskite cell is deposited on the surface of the perovskite cell through a chemical vapor deposition method to form a packaging structure. The perovskite cell comprises a transparent conductive substrate, an electron transport layer is deposited on the transparent conductive substrate, a perovskite light absorption layer is deposited on the electron transport layer, a hole transport layer is deposited on the perovskite light absorption layer, and a metal electrode is deposited on the hole transport layer. The packaging structure comprises a first packaging layer, the first packaging layer is deposited on the whole surface of the perovskite cell through a chemical vapor deposition method, the outer surface of the first packaging layer is coated with a second packaging layer, the outer surface of the second packaging layer is covered with a third packaging layer, and the transparent conductive substrate is indium tin oxide or fluorine-doped tin oxide. According to the utility model, environmental factors are effectively blocked through multi-layer packaging, so that the stability and the service life of the cell are improved, the photoelectric conversion efficiency can be ensured, and the solar cell is suitable for large-scale production.

The invention relates to the technical field of water body aeration, in particular to an intelligent energy-saving precise intelligent aeration system which comprises an aeration tank, a filter cover is mounted in the aeration tank, a water inlet is formed in the top of the aeration tank, a water outlet is formed in the bottom of the aeration tank, valves are arranged on the water inlet and the water outlet, and the water inlet and the water outlet are communicated with the aeration tank. According to the device, the oxygen sensors are arranged at the bottom, the middle part and the upper part of the aeration box, so that the oxygen content of a low-level water layer, a middle-level water layer and an upper-level water layer of a water body is detected, and the detection accuracy is improved; when the detected oxygen content standard meets the requirement, feedback information is sent to the controller, and the controller closes the inflator pump and the stirring motor in time, so that the inflator pump and the stirring motor are started only under the condition that the oxygen content of the water body is low, and the energy-saving effect is achieved.

The present invention relates to the technical field of H01B1 / 16, and specifically to a PERC crystalline silicon solar back side silver paste and a preparation method thereof. The silver paste comprises a silver powder paste combination, a mixed metal oxide paste and an inorganic auxiliary agent paste. The silver powder paste combination comprises a silver powder paste with a D50 of 50nm-1μm. By optimizing the back side silver paste formula, the silver content of the back side electrode silver paste for the PERC crystalline silicon solar cell is effectively reduced to 48-52% (weight percentage), thereby reducing the material cost of a cell sheet while ensuring the photoelectric conversion efficiency and welding performance of the cell sheet.

The invention relates to a vertical charge transfer imaging sensor and a manufacturing method thereof. In the vertical charge transfer imaging sensor, shallow trench isolation and deep trench isolation are formed on one side of a semiconductor substrate, the deep trench isolation comprises a trench electrode and a first isolation medium which are filled in a deep trench formed on one side of the semiconductor substrate, and the deep trench isolation defines a plurality of substrate units in a pixel region. Each substrate unit comprises a photosensitive area and a charge reading area which are isolated by a shallow trench, the substrate units and the control gates respectively form two polar plates of a capacitor corresponding to the photosensitive areas, and the substrate electrodes are formed on the other side of the substrate, are in contact with the polar plates formed by the substrate units and are isolated from the trench electrodes. The deep trench isolation forms physical isolation between pixels, crosstalk between the pixels can be effectively avoided, the trench electrode provides an operable electrode end for the vertical charge transfer imaging sensor, and diversified operation modes can be achieved conveniently.

The invention provides a design method and system for a high-conversion-rate packaging material of an HJT battery assembly, and the method comprises the steps: plating a first antireflection film on the surface of photovoltaic glass, and adding a light conversion substance into the first antireflection film; detecting a plurality of antireflection parameters of the first antireflection film added with the light conversion substance, and adjusting the content of the light conversion substance in the first antireflection film in combination with the plurality of antireflection parameters and a light transmission detection result of the first antireflection film so as to generate a first light conversion antireflection film; plating a second anti-reflection film on the first light conversion anti-reflection film, and adding a corresponding number of light conversion substances into the second anti-reflection film according to a light conversion detection result of the first light conversion anti-reflection film and a preset light conversion effect to generate the second light conversion anti-reflection film; and according to the light transmission effects of the first light conversion antireflection film and the second light conversion antireflection film, setting parameters of the reflective backboard of the HJT battery assembly. According to the method, on the basis of ensuring the photoelectric conversion efficiency of the HJT battery assembly, the cost consumed by light conversion of the packaging material is reduced.

The utility model discloses a solar cell, and relates to the technical field of solar cells. The solar cell includes: a silicon substrate; the P-type doped region and the N-type doped region are arranged on the main surface of the silicon substrate; the N-type doped region is provided with a first tunneling oxide layer, a first N-type doped layer, a heat-resistant isolation layer and a second N-type doped layer from inside to outside; and the P-type doped region is provided with a second tunneling oxide layer and a P-type doped layer from inside to outside. According to the embodiment, synchronous diffusion of the N-type doping element and the P-type doping element can be realized through one-time high-temperature annealing.

The invention provides a photovoltaic power generation device and a cleaning method, the photovoltaic power generation device floats on the water surface, the photovoltaic power generation device can comprise a supporting structure, a photovoltaic panel, a driving structure, a cleaning structure and a control structure, and the supporting structure is provided with a sliding rail extending along a first direction; at least one photovoltaic panel is in sliding connection with the sliding rail; the driving structure is connected with the supporting structure and the photovoltaic panel and can provide driving force for the photovoltaic panel to slide relative to the supporting structure. The cleaning structure comprises a roller brush, the roller brush is arranged on the light receiving surface of the photovoltaic panel, the roller brush extends in the second direction meeting the vertical condition with the first direction, and the roller brush can rotate on the light receiving surface in the process that the photovoltaic panel slides along the sliding rail, so that flexible bristles on the peripheral side of the roller brush clean the light receiving surface; the control structure is in signal connection with the driving structure to control the driving process of the driving structure. The light receiving surface is cleaned by the flexible bristles, so that the photoelectric conversion efficiency of the photovoltaic panel can be ensured.

The present invention discloses a ring-connected expandable LED smart street lamp, which relates to the technical field of smart street lamps, including a lamp pole; a lamp body; a photovoltaic panel; a protection mechanism, which includes a slider, a telescopic rod is rotatably connected to the slider, one end of the telescopic rod is rotatably connected to the photovoltaic panel, and two protection plates are symmetrically slidably connected to a fixed plate; a cleaning mechanism, which includes a cross bar slidably connected to the fixed plate, a brush is fixedly connected to the cross bar, and the brush abuts against the photovoltaic panel; the slider slides on the fixed plate in a first direction to first drive the photovoltaic panel to rotate to a horizontal state, and when the photovoltaic panel is in a horizontal state, the cross bar is passively driven to move laterally, and the photovoltaic panel is cleaned by the brush, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel; as the slider continues to move, the two protection plates are passively driven to move closer to and abut against each other, and the two protection plates cover the outside of the photovoltaic panel, thereby protecting the photovoltaic panel in a horizontal state, thereby preventing damage to the photovoltaic panel caused by severe weather such as hail.

The utility model discloses a kind of BIPV photovoltaic devices, including light-transmitting first bearing plate group, battery assembly, curved conductive sheet and light-transmitting or non-light-transmitting second bearing plate group;Battery assembly includes at least one battery string, the battery string includes multiple cell pieces, multiple the cell piece is successively connected in series and is arranged along the length direction of the battery string, curved conductive sheet is set between two adjacent cell pieces, the first end of the conductive sheet is connected with the front electrode layer of one of the cell piece, the tail end of the conductive sheet is connected with the back electrode layer of another cell piece, first bearing plate group, battery assembly and second bearing plate group are sequentially stacked, wherein, at the position corresponding with conductive sheet, first bearing plate group has first light shielding part and / or first refractive part, the design structure is compact, guarantees photoelectric conversion efficiency, appearance is beautiful, reliable in use.

The invention provides carbon nanotube composite silver paste and a preparation method thereof. The carbon nanotube composite silver paste comprises the following components in parts by weight: 1-3 parts of carbon nanotube paste, 80-85 parts of silver powder, 1.2-2.5 parts of aluminum powder, 2-8 parts of glass powder, 7-10 parts of an organic carrier and 1-2.4 parts of a first solvent, the carbon nano tube slurry is prepared by mixing a carbon nano tube with a second solvent and a dispersing agent, and then carrying out tank milling, sanding and convection homogenization; and the carbon nano tube slurry comprises the following components in percentage by weight: 1-5% of the carbon nano tube, 94.5-98.5% of the second solvent and 0.15-1.5% of the dispersing agent. The carbon nanotube composite silver paste provided by the invention not only can solve the problems that the traditional carbon-silver composite paste is difficult to print and easy to block a net, but also can improve the battery performance to a certain extent while reducing the production cost of the silver paste.