15 results about "Photoelectric conversion efficiency" patented technology

The invention relates to the field of a solar cell, and particularly to an organic-inorganic hybrid perovskite solar cell. The invention provides a tin-doped CH3NH3SnxPb1-xI3 perovskite solar cell, wherein an active layer is a tin-doped CH3NH3SnxPb1-xI3 perovskite film. The tin-doped CH3NH3SnxPb1-xI3 perovskite film has a planar heterojunction structure. The invention provides a method for preparing the tin-doped CH3NH3SnxPb1-xI3 perovskite solar cell according to a one-step method in which multiple solvent processing procedures are utilized. A high-quality perovskite film is obtained, and high photoelectric conversion efficiency is realized.

The invention discloses a planar undoped heterojunction-perovskite laminated cell and a preparation method thereof, and relates to the technical field of solar cells. The cell comprises a perovskite top-layer solar cell and a heterojunction bottom-layer solar cell which are connected together, wherein the perovskite top-layer solar cell comprises a front metal electrode layer, a first transparentconductive oxide layer, a hole transport layer, a perovskite light absorption layer and an electron transport layer which are sequentially arranged from top to bottom; the perovskite light absorptionlayer comprises a perovskite layer A, a perovskite layer B and a perovskite layer C which are sequentially arranged from top to bottom; the forbidden band width of the perovskite layer A is 2.4 to 3.0ev; the forbidden band width of the perovskite layer B is 2.0-2.6 ev, the forbidden band width of the perovskite layer C is 1.9-2.2 ev; and the forbidden band widths of the perovskite layer A, the perovskite layer B and the perovskite layer C are sequentially reduced. The perovskite solar cell has the advantages that the photoelectric conversion efficiency exceeds 28%, the open-circuit voltage ishigh, and the generating capacity is increased.

The invention discloses a perovskite solar cell and a preparation method. The solar cell comprises a transparent substrate layer, a transparent anode layer, a layer gradient hole transport layer, a perovskite light absorption layer, an electron transport layer, an electron buffer layer and a metal cathode layer, which are arranged from bottom up, wherein the above layers are mainly prepared by anevaporation process. The solar cell provided by the invention has high open circuit voltage VOC and photoelectric conversion efficiency PCE, the maximum efficiency reaching 16.8%, the open circuit voltage reaching 1.05V and good stability.

The invention discloses a solar battery assembly and a preparation method thereof. The solar battery assembly comprises an upper cover plate, a front-surface adhesive film layer, a transparent film frame, a battery sheet array, a back-surface adhesive film layer and a backboard which are successively superposed, wherein the battery sheet array comprises multiple battery sheets and conductive wires connected with auxiliary grid wires of the battery sheets, the transparent film frame is composed of longitudinal adhesive film belts and transverse adhesive film belts, the longitudinal adhesive film belts and the transverse adhesive film belts are intersected with each other, and the conductive wires are composed of metal wires and are combined with the longitudinal adhesive film belts. According to the solar battery assembly provided by the embodiments of the invention, the conductive wires composed of the metal wires are combined with the longitudinal adhesive film belts of the transparent film frame and then are connected with the auxiliary grid wires of the battery sheets, such that the connection stability between the conductive wires and the auxiliary grid wires can be guaranteed, the shading area of the transparent film frame is also reduced, and the photoelectric conversion efficiency of the solar battery assembly is ensured accordingly.

The invention discloses a solar cell module and a preparation method thereof. The solar cell module comprises an upper cover board, a front film layer, cell sheets, a back film layer and a backboard which are sequentially superposed, wherein the cell sheet is provided with a secondary grid line; a transparent film layer is arranged between the front film layer and the cell sheets; a conductive wire is arranged on the surface, opposite to the cell sheets, of the transparent film layer, is embedded into the transparent film layer and is exposed from the inside of the transparent film layer; the conductive wire is formed by a metal wire and is connected with the secondary grid line; and the melting point of the transparent film layer is higher than those of the front film layer and the back film layer. According to the solar cell module disclosed by the embodiment of the invention, the problem that the metal wire drifts due to melting of the front film layer and the back film layer in the laminating process can be solved; and the connection stability between the conductive wire and the secondary grid line is ensured, so that the photoelectric conversion efficiency of the solar cell module is improved.

The invention relates to an efficient photoelectric converter based on a carbon fiber@ tungsten disulfide nanosheet core-shell composite structure and a preparation method of the efficient photoelectric converter, and belongs to the technical field of novel materials and application thereof. The efficient photoelectric converter provided by the invention adopts the carbon fiber@ tungsten disulfide nanosheet core-shell composite structure as a photoelectric conversion material; furthermore, ohmic electrodes are arranged at two ends of each carbon fiber with the carbon fiber@ tungsten disulfide nanosheet core-shell composite structure, and the carbon fiber is connected in parallel to a solar receiving device and then is connected in series with a low-voltage power supply and an electrical appliance for combination, so that the photoelectric converter is obtained. The photoelectric converter disclosed by the invention is simple in structure; preparation equipment and a process for the device are simple; the prepared device is stable in structure and performance; the product yield is high, the cost is low, and the production process is clean and environment-friendly. The photoelectric converter prepared by the preparation method is high in photoelectric conversion efficiency and can be used as a solar power generation device and a light signal sensitive detector.

The invention discloses selenium-substituted benzodipyrene imide and synthesis method as well as application to a solar battery. The synthesis method is characterized in that: perylenetetracarboxydianhydride is taken as a raw material for preparing anhydride perylene bisimide dimer anhydride through butyl tetracarboxy perylene; different alkyl chain-substituted and selenium-substituted benzodipyrene imide can be prepared easily and simply through an anhydride intermediate. The acceptor molecule has superior photoelectric property, can be applied to organic solar battery, and has simple requirement on device structure, and the photoelectric conversion efficiency under the condition of no optimizing manners such as solvent additive, thermal annealing and the like can reach up to 5.17 percent.

The invention provides a solar cell module. The solar cell module comprises: an installation frame which is provided with an installation groove for installing a cell panel therein, wherein the bottom wall of the installation groove is provided with a penetrating bar-shaped lead wire lead-out hole; and a junction box arranged at the outer surface of the bottom wall of the installation groove, wherein a lead wire passing through the lead wire lead-out hole electrically conducts the cell panel and the junction box. The solar cell module provided by the invention has the following advantages: on one hand, the junction box is installed on the installation frame rather than the back surface of the cell panel, such that the influence caused by heat dissipation of the junction box to the output power of a cell is avoided, the application of a cell module manufacturer is facilitated, the labor cost is decreased, and the installation efficiency is improved; and on the other hand, compared to a conventional solar cell module whose junction box is installed on a back plate, the photoelectric conversion efficiency of the cell module provided by the invention in actual application is improved. The invention further provides a manufacture method of the solar cell module.

The invention discloses a lattice mismatched five-junction solar cell and a preparation method thereof; a GaInP nucleating layer, a GaInAs buffer layer, an AlGaInAs DBR reflecting layer, an AlGaInAs lattice gradient buffer layer, a first GaInAs sub-cell, a second GaInAs sub-cell, a first GaInP sub-cell, a second GaInP sub-cell and a GaInAs cap layer are sequence formed on a Ge substrate; the GaInPnucleating layer, the GaInAs buffer layer and the AlGaInAs DBR reflecting layer are in lattice matching with the Ge substrate; the epitaxial layers of the first GaInAs sub-cell, the second GaInAs sub-cell, the first GaInP sub-cell and the second GaInP sub-cell are in lattice mismatch with the Ge substrate, and lattice matching is kept between the epitaxial layers. According to the solar cell andthe method, the sub-cell carrier collection efficiency and a cell filling factor can be effectively improved, so that the photoelectric conversion efficiency of the five-junction solar cell is improved; compared with most five-junction cells, the structure does not need to grow a GaInNAs epitaxial layer with high quality and harsh growth conditions, and the product development difficulty and the large-scale growth cost are greatly reduced.

The invention discloses a polynitrogen heterocyclic super molecule sensitizer and an application thereof, wherein the sensitizer uses a polynitrogen heterocyclic derivative as an electron donor of thesensitizer, the polynitrogen heterocyclic super molecule sensitizer is formed by an intermolecular hydrogen bond between-N= group and a carboxylic acid small molecule, the structural formula is as shown in the specification, wherein ''suspension points'' represent the intermolecular hydrogen bond. The polynitrogen heterocyclic super molecule sensitizer has simple molecular assembly and strong stereostructure, and can be used for preparing a solar cell with high photoelectric conversion efficiency.

The invention discloses solar cell conductive mixed paste containing polyethylene vinyl acetate. The solar cell conductive mixed paste containing the polyethylene vinyl acetate is prepared by the following raw materials: by weight, A materials 58-61, B materials 24.8-26.8, triethyl citrate 0.2-0.4, octyl epoxy stearate 0.3-0.5, polyethylene vinyl acetate1.8-2.6, poly adipic acid glycol1-2, castor oil 1-2, silane coupling agents KH602 1-2, and organic silicon flatting agents 1-2. Due to the fact that lead is not contained, the solar cell conductive mixed paste containing the polyethylene vinyl acetate completely conforms to the requirements of environmental protection, can be applied to the production of solar cells, and can form strong adhesion on the surfaces of solar cells, and cell photoelectric conversion efficiency is high.

The invention discloses an N-type single-sided cell preparation method. The N-type single-sided cell preparation method comprises steps that 1) texturing of an N-type silicon wafer is carried out; 2) HCI solution, HF solution, and HPO3 solution are sequentially used for cleaning; 3) POCl 3 mixed liquor is prepared; 4) the back surface of the cleaned silicon wafer is provided with a silicon nitride mask in an adhesive manner, and then is disposed in the POCI 3 mixed liquor, and then is disposed in a diffusion furnace for heating; 5) cooling is carried out, the silicon wafer after phosphorus diffusion is taken out, and the mask is torn off; 6) by adopting wet etching technology, the front surface is provided with a silicon nitride anti-reflection film in a plated way; 7) silk-screen printing is carried out, and sintering of front surface grid lines and back surface aluminum back surface field. A P type technology is used for the preparation of the N type single-sided cell, and therefore costs are low, the technology is simple, production efficiency is low, and large-scale production is realized; and by adopting the solution method having a new formula for the phosphorus diffusion, the diffusion is uniform, the costs are low, the efficiency is high, energy saving and environment protection are realized, and photoelectric conversion efficiency is high.

The invention discloses solar cell conductive paste containing phthalic acid ester. The solar cell conductive paste containing the phthalic acid ester is prepared by the following raw materials: by weight, A materials 66-68, B materials 18-22, phthalic acid ester 0.5-0.8, and castor oil 1-2. Due to the fact that lead is not contained, the solar cell conductive paste containing the phthalic acid ester completely conforms to the requirements of environmental protection, can be applied to the production of solar cells, and can form strong adhesion on the surfaces of solar cells, cell photoelectric conversion efficiency is high, and meanwhile silver powder, aluminum powder and copper powder of different particle diameters are selected to increase contact areas among particles. Therefore, conductivity of silver paste is improved.