336 results about "Tandem solar cell" patented technology

The invention discloses a back contact cell and a preparation method thereof, a laminated cell and a photovoltaic module, and belongs to the technical field of photovoltaics, the back contact cell comprises a substrate, the substrate comprises a first region, a second region and a spacer region located between the first region and the second region, and a tunneling oxide layer and a doped polycrystalline silicon layer are arranged in the first region and the spacer region. The doped polycrystalline silicon layer is arranged on the surface, deviating from the substrate in the thickness direction, of the tunneling oxide layer, the amorphous silicon passivation layer and the doped amorphous silicon layer are arranged in the second region and the spacer region, and the doped amorphous silicon layer is arranged on the surface, deviating from the substrate in the thickness direction, of the amorphous silicon passivation layer. And the amorphous silicon passivation layer in the spacer region is positioned on one side, deviating from the substrate along the thickness direction, of the doped polycrystalline silicon layer. The insulating layer is arranged between the amorphous silicon passivation layer and the doped polycrystalline silicon layer, the insulating layer comprises a first insulating part which extends in the thickness direction and is arranged at the junction position of the second region and the spacer region, the first insulating part can prevent the back contact cell from leaking electricity in the horizontal direction, and the overall electrical performance of the back contact cell is improved.

The present invention discloses a two-terminal perovskite-silicon tandem cell and a preparation method thereof, which are applied to the technical field of perovskite solar cells. The two-terminal perovskite-silicon tandem cell includes a tandem cell sheet, and the tandem cell sheet includes a perovskite cell structure for absorbing visible light and a silicon cell structure for absorbing near-infrared light. A near-infrared light conversion layer is provided on the light-incident side surface of the two-terminal perovskite-silicon tandem cell, and the near-infrared light conversion layer is a down-conversion thin film. By converting the short wave in sunlight into a long wave through the near-infrared light conversion layer, the problem of current mismatch caused by the two-terminal perovskite-silicon tandem cell under the illumination condition with a relatively high proportion of visible light is solved, so that the two-terminal perovskite-silicon tandem cell has high performance.

The invention relates to a perovskite / crystalline silicon laminated solar cell structure taking a tin dioxide thin film as a composite layer and a preparation method of the perovskite / crystalline silicon laminated solar cell structure, and belongs to the technical field of photovoltaics. According to the perovskite / crystalline silicon laminated solar cell structure, the tin dioxide thin film is used as a composite layer, so that the cost of cell preparation is reduced; in the preparation method of the perovskite / crystalline silicon laminated solar cell, the composite layer and the electron transport layer can adopt the same preparation method, so that the equipment cost in the preparation process is reduced; the perovskite / crystalline silicon laminated solar cell obtained by the cell structure and the preparation method provided by the invention is relatively low in preparation cost and relatively high in photoelectric conversion efficiency.

The invention discloses a preparation method of a bottom cell of a perovskite / crystalline silicon laminated solar cell, which comprises the following steps of: providing a bottom cell precursor with a surface heavily doped silicon layer and / or an emitter layer exposed, and depositing a hydrogen-rich metal oxide layer on the front surface or double surfaces of the bottom cell precursor by adopting an ALD (Atomic Layer Deposition) method; depositing a hydrogen injection passivation layer on the emitter layer on the back surface of the bottom cell precursor by adopting a PECVD method; printing low-aluminum-content silver paste on the hydrogen injection passivation layer to obtain a metal electrode grid line, and drying, shaping and slightly sintering the metal electrode grid line; and placing the lightly sintered bottom cell precursor in LECO equipment, and carrying out single-sided LECO treatment on a back metal electrode of the bottom cell to obtain the bottom cell. The preparation method is simple, streamline production is easy, the bottom cell precursor does not need to be additionally processed, the bottom cell precursor on a production line can be cut out for back metal electrode preparation and subsequent single-side LECO processing, and preparation and removal of a front metal electrode of the bottom cell are not needed.

The invention discloses a full-perovskite laminated solar cell based on narrow-band-gap buried interface modification and a preparation method and application of the full-perovskite laminated solar cell. According to the preparation method of the full-perovskite laminated solar cell based on narrow-band-gap buried interface modification, hydrazine sulfate and lead iodide are introduced to serve as an interface modification layer between a narrow-band-gap perovskite layer and a hole transport layer, and through the synergistic effect of the hydrazine sulfate and the lead iodide, surface defects of the hole transport layer can be effectively passivated; moreover, the hole mobility can be improved remarkably, and the photoelectric conversion efficiency of the cell is improved based on the preparation method of the full-perovskite laminated solar cell. The full-perovskite laminated solar cell has high photovoltaic performance and can be widely applied to the photoelectric field.

The invention relates to the technical field of solar cells, in particular to a perovskite cell, a preparation method of the perovskite cell, a laminated cell and a photovoltaic module. Electron-rich N atoms in dithienopyrrole (DTP) can improve the stability of an organic semiconductor material in an oxidation state, S atoms can interact with metal ions in a perovskite absorption layer, so that interface defects on the surface of perovskite are passivated, and meanwhile, DTP serves as a multifunctional electron-rich thiophene fused heterocyclic unit, so that the performance of the perovskite absorption layer is improved. The compound has the unique characteristics that the recombination energy is small, the mobility is high, N and thiophene sites can be chemically modified, and the compound can interact with metal ions. According to the invention, thiophene sites in DTP are chemically modified by adopting an electron-donating group containing aniline fluorene, so that the hole transport material has a deeper HOMO energy level, the HOMO energy level is better matched with the energy level of a perovskite material, better mobility is realized, and hole extraction and transport are facilitated.

The invention relates to the technical field of batteries, and discloses a perovskite crystalline silicon laminated battery, a manufacturing method thereof, a photovoltaic module and a photovoltaic system. The manufacturing method of the perovskite crystalline silicon laminated cell comprises the following steps: providing a silicon substrate, wherein the silicon substrate comprises a first surface and a second surface which are oppositely arranged; manufacturing a P-type doped layer and a first electrode layer which are stacked in sequence on the first surface of the silicon substrate; an N-type doped layer, a tunneling layer, a hole transport layer, a perovskite layer, an electron transport layer, a buffer layer, a second electrode layer and an antireflection layer which are sequentially stacked are manufactured on the second surface of the silicon substrate; wherein the step of manufacturing the buffer layer comprises the step of forming the buffer layer on one side, far away from the perovskite layer, of the electron transport layer by adopting a plasma enhanced atomic layer deposition method. According to the technical scheme provided by the invention, the long-term stability of the perovskite crystalline silicon laminated cell can be improved.

The invention discloses a perovskite-silicon laminated solar cell, a preparation method thereof and a photovoltaic module, the perovskite-silicon laminated solar cell comprises a silicon bottom cell and a perovskite top cell arranged on the silicon bottom cell, the exposed side surface of the silicon bottom cell is provided with a first hydrogen enrichment layer, and the perovskite top cell is provided with a second hydrogen enrichment layer; wherein the perovskite top cell comprises a transparent conductive layer arranged away from the silicon bottom cell, and the second hydrogen enrichment layer at least comprises a first sub-layer arranged on the top surface, away from the silicon bottom cell, of the transparent conductive layer. The passivation effect of the outer edge region of the perovskite-silicon laminated cell can be effectively improved, so that the photoelectric conversion efficiency of the cell is improved.

This application provides a perovskite-crystalline silicon tandem solar cell and its preparation method. In one implementation, a perovskite-crystalline silicon tandem solar cell includes a crystalline silicon solar cell, a serial connection structure layer, a first carrier transport layer, a perovskite light absorption layer, a second carrier transport layer, and an upper transparent electrode layer. The first carrier transport layer includes a base layer and resistance-increasing nano structures distributed on the base layer. The resistance-increasing nano structures are integrally formed with the base layer. The resistance-increasing nano structures extend from the carrier transport layer base layer into the perovskite light absorption layer.

Disclosed are a solar cell, a tandem solar cell, and a photovoltaic module. The solar cell includes a substrate, a doped semiconductor layer, a passivation layer and a plurality of electrodes. The substrate is provided with textured structures on a portion of a surface of the substrate. The doped semiconductor layer is disposed on the substrate. The solar cell further includes holes extending through the doped semiconductor layer, and corresponding to the textured structures, respectively, and a bottom of a respective hole exposes at least a portion of a corresponding textured structure. The passivation layer is formed over a surface of the doped semiconductor layer away from the substrate, fills the holes. The plurality of electrodes are arranged along a first direction, pass through the passivation layer and are in electrical contact with the doped semiconductor layer.

Provided is a solar cell and a tandem solar cell. The solar cell includes substrate, tunnel dielectric layer, doped conductive layer and first electrode. First surface of the substrate includes metallization and non-metallization regions. The metallization region has first texture structure including first recess. The non-metallization region has second texture structure including second recess. Bottom surface of the first recess has a smaller average one-dimensional size than the second recess. The metallization region includes first and second regions, the first regions are arranged at intervals in first direction, the second regions are arranged at intervals in second direction and connected between adjacent first regions. The tunnel dielectric layer is arranged on the first texture structure. The doped conductive layer is arranged on the tunnel dielectric layer away from the substrate. The first electrode includes finger electrodes electrically connected with the doped conductive layer and corresponding to the first regions.

The invention relates to the field of photovoltaic technology, and provides a laminated cell and a preparation method thereof, and a photovoltaic module, the laminated cell comprises a bottom cell and a top cell which are laminated, the bottom cell comprises a crystalline silicon solar cell, and the top cell comprises a perovskite solar cell; the perovskite solar cell comprises a perovskite light absorption layer and a functional layer which are arranged in a stacked mode, the functional layer comprises a first functional layer and a second functional layer which are arranged in a stacked mode, the first functional layer is adjacent to the perovskite light absorption layer, and the second functional layer is arranged on the side, away from the perovskite light absorption layer, of the first functional layer; the first functional layer comprises a titanium oxide nanorod array, and the second functional layer comprises a zirconium oxide layer with a plurality of pores. The laminated cell provided by the invention has the advantages that the optical utilization rate is improved, so that the photoelectric conversion efficiency is improved.

The present invention addresses the problem of providing a tandem solar battery (1) having a simple configuration and exceptional battery performance. A tandem solar battery (1) that solves the aforementioned problem includes a first solar battery cell (CB1) that includes a first light absorption layer (10) containing n-type or p-type crystal silicon, a titanium oxide layer (31) that is disposed on the first light absorption layer (10) and contains amorphous titanium oxide, an intermediate layer (32) that is disposed adjacent to the titanium oxide layer (31) and contains tin oxide or titanium nitride having a higher nitrogen composition than the titanium oxide layer (31), and a second solar battery cell (CT1) disposed on the intermediate layer (32).

The invention discloses a preparation method of a perovskite crystalline silicon laminated solar cell and a bottom cell thereof, and belongs to the field of solar cells, a layer of annular graphite boat is placed on the second surface of a silicon wafer to cover the silicon wafer, a covered contact area and an uncovered non-contact area are formed, a front mask layer is deposited on the non-contact area, a cleaning process is matched, and the bottom cell of the perovskite crystalline silicon laminated solar cell is obtained. When the second surface of the silicon wafer is connected with the transparent conductive layer, the second surface of the silicon wafer is connected with the phosphorus-doped polycrystalline silicon layer of the bottom cell through the contact region and is connected with the passivation layer of the bottom cell through the non-contact region. The problem that electrons or holes are difficult to extract due to the fact that a plurality of small holes are discontinuous is solved, the transparent conducting layer is not likely to be separated, the contact area is larger, and interface contact is improved. By means of the method, H passivation caused by the passivation layer is reserved, laser damage caused by the laser opening is avoided, the opening voltage and filling of the perovskite crystalline silicon lamination can be improved, and the conversion efficiency of the perovskite crystalline silicon lamination can be improved.

A solar cell includes a segmented solar cell, a composite layer, a first passivation layer, and a field passivation layer. The segmented solar cell includes a substrate and an emitter formed at one side of the substrate along a thickness direction of the solar cell, and the segmented solar cell includes at least one cutting surface parallel to the thickness direction. The composite layer is formed at one side of the segmented solar cell close to the cutting surface, and the composite layer is doped with aluminum element and oxygen element. The first passivation layer is provided at the cutting surface. The field passivation layer is provided at one side of the first passivation layer facing away from the first passivation layer. The field passivation layer and the emitter have doping elements of different electric-conductive types.

Solar cell modules and methods of fabrication are described. In an embodiment, a pair of tandem solar cells are bonded together along a contact ledge of a first tandem solar cell using a solid electrically conductive bonding material.

The present invention relates to a perovskite solar cell and a tandem solar cell comprising the same, characterized in that the perovskite solar cell comprises: a substrate; a transparent electrode; a hole transport layer; a perovskite light absorption layer; an electron transport layer; and a metal electrode, wherein the electron transport layer is a graded thin film in which a chemical binding state of elements constituting the electron transport layer gradually changes from the lower portion thereof toward the upper portion thereof.

The application provides a preparation method of a perovskite / crystalline silicon laminated solar cell and the cell. The self-assembled monolayer is blocked from adsorbing on a tunneling layer through a non-full-coverage insulating layer, so as to achieve the effect of a non-full-coverage hole transport layer. On one hand, the lateral conduction network of the hole transport layer can be directly cut off, so that the holes can only migrate longitudinally along the preset transport channel area, and the hole diffusion loss is reduced from the root; on the other hand, the insulating layer is used as a blocking material, and due to the excellent chemical inertness and thermal stability, the insulating layer can be used as a part of interface barrier to inhibit the chemical reaction between the perovskite layer and the SAM layer, slow down the decomposition rate of the perovskite crystal caused by interface erosion, and moreover, the non-full-coverage design can reduce the total amount of SAM molecules by 40%-55%, the SAM molecules in the transport channel area are not densely accumulated, and the problems of transport channel rupture and defect increase caused by molecular aggregation in the traditional structure are avoided.

This invention provides a solar cell, its fabrication process, a tandem solar cell, and a photovoltaic module. The fabrication process of the solar cell includes: providing a cell substrate; printing a conductive material onto the cell substrate; and curing the conductive material to form initial grid lines. The conductive material includes bismuth-based lead-free glass; the conductive material also includes copper powder and nickel powder; the mass ratio of copper powder to nickel powder is 80~99.5:0.5~20, and the copper powder includes flake-shaped copper powder and spherical copper powder. In the fabrication process of this invention, the conductive material, through a ternary synergistic system of "copper-nickel-glass" and a dual-morphology copper powder composite design, achieves multiple effects such as suppressing copper diffusion and oxidation and improving adhesion under an air-sintering atmosphere, thereby improving the fill factor and photoelectric conversion efficiency of the solar cell.

This application relates to a back-contact tandem solar cell, its fabrication method, and a photovoltaic module, belonging to the field of photovoltaic technology. The back-contact tandem solar cell includes a back-contact bottom cell and a perovskite top cell, with the perovskite top cell electrically connected to the front side of the back-contact bottom cell via an interconnect layer. The back-contact bottom cell includes a substrate, and the perovskite top cell includes an electron transport layer, a perovskite layer, and a hole transport layer sequentially disposed on the interconnect layer. The surface of the substrate facing the perovskite layer has a textured structure, so that the surfaces of the interconnect layer and the electron transport layer facing the perovskite top cell also have textured structures. The textured structure includes multiple pyramidal structures, and the surface of the pyramidal structures includes multiple recessed structures. The perovskite precursor liquid is guided downward by the recessed structures, promoting the uniform spreading of the perovskite precursor liquid on the surface of the electron transport layer, reducing the risk of pinholes in the perovskite layer, and improving the quality of the perovskite layer.

The invention provides a perovskite / silicon laminated solar cell and a preparation method thereof. The perovskite / silicon laminated solar cell comprises a silicon substrate cell, a hole transport layer, a perovskite light absorption layer, an electron transport layer, a functional layer and an electrode which are sequentially laminated, the material of the electron transport layer comprises tungsten disulfide, and the material of the perovskite light absorption layer comprises a rare earth doped perovskite material. The perovskite / silicon laminated solar cell has high charge transmission capability and space environment endurance capability, is especially suitable for space scenes such as near-earth orbit satellites, and has high stability and environment adaptability.

Provided are a solar cell, a method for preparing a solar cell, a tandem solar cell, and a photovoltaic module. The solar cell includes a substrate, a doped conductive layer, and a dielectric layer. The substrate has a first surface, where the first surface includes electrode regions and non-electrode regions that are alternatingly arranged along a first direction. The doped conductive layer is formed over the first surface of the substrate. The doped conductive layer includes first conductive portions and at least one second conductive portion. Each respective first conductive portion of the first conductive portions is formed over a respective electrode region of the electrode regions, and each respective second conductive portion of the at least one second conductive portion is formed over a part of a non-electrode region of the non-electrode regions. The dielectric layer is between the first surface and the doped conductive layer.

The invention discloses a perovskite cell and a preparation method thereof, a laminated cell, a photovoltaic module, a power generation device and electric equipment, the perovskite cell comprises a compound layer, the compound layer comprises a compound composed of a repetitive unit, the repetitive unit comprises (R3-R1-R2) d (MaXb) cM comprising at least one of Pb, Sn, Zn, Ti, Sb, Bi, Ni, Fe, Co, Ag, Cu, Ga, Ge, Mg, Ca, In, Al, Mn, Cr, Mo or Eu, x comprises at least one of F, Cl, Br, I, SCN <->, CNO <->, OCN <->, OSCN <->, SH <->, OH <->, CP <->, CN <->, SeCN <->, N3 <-> or NO2 <->, R1 comprises at least one of alkyl with the carbon atom number being smaller than or equal to 6, aryl with the carbon atom number being 6-12, five-membered aromatic heterocyclic group or six-membered aromatic heterocyclic group, R2 comprises at least one of a group containing O-C-O, a group containing O-P = O-O or a group containing S, and R3 comprises at least one of alkyl with the carbon atom number being smaller than or equal to 6. And R3 comprises at least one of H, F, carboxyl, amino or acylamino. On the premise of high efficiency, the stability of the perovskite cell is improved.

The invention relates to a laminated cell, a preparation method thereof and a photovoltaic module. The laminated cell comprises a bottom cell, a top cell and a composite layer arranged between the bottom cell and the top cell, wherein the bottom cell comprises a silicon substrate, one side, facing the top cell, of the silicon substrate is provided with a first suede structure, the first suede structure comprises a plurality of first rounded pyramid structures, the suede size of each first rounded pyramid structure is 1 [mu] m-3. 5 [mu] m, and the rounded radius of the tower top and the tower bottom is 5 nm-300 nm; the top cell includes a perovskite absorption layer. The laminated cell has improved photoelectric conversion efficiency.

This application discloses a solar cell, a tandem solar cell, and a photovoltaic module. The solar cell includes a silicon substrate. The silicon substrate includes a first surface and a second surface disposed opposite to each other. The first surface includes a first region and a second region spaced apart. The surface height of the silicon substrate at the first region is lower than the surface height of the silicon substrate at the second region, so that a step is formed at the boundary between the first region and the second region. An electrode structure is also provided on the first surface, corresponding to the first region and extending to the step. Blind slot structures are distributed on the step, extending in a direction parallel to the thickness direction of the silicon substrate. The method for fabricating the solar cell of the present invention optimizes the interface of the step region, reduces optical loss at the edge of the cell, improves light absorption efficiency, and improves the conversion efficiency of the solar cell.

The application provides a perovskite / crystalline silicon laminated solar cell preparation method, a cell and application. The body heterojunction film layer obtained by mixing N-type SAM and P-type SAM is used as a core tunneling layer, the performance of the tunneling layer is precisely optimized, the defects of a traditional technical solution are effectively solved, the photoelectric conversion efficiency and stability of a device are improved, and the perovskite / crystalline silicon laminated solar cell prepared by the method can be well applied to the field of space photovoltaics.

The invention provides a positive and positive perovskite laminated solar cell based on an N-heterocyclic carbene precursor and a preparation method and application thereof, and relates to the technical field of solar cells, and the positive and positive perovskite laminated solar cell comprises a substrate layer; an electron transport layer stacked on the substrate layer; the perovskite light absorption layer is laminated on the electron transport layer; the hole transport layer is laminated on the perovskite light absorption layer; an electrode layer laminated on the hole transport layer; the N-heterocyclic carbene precursor is used for modifying the positively-arranged perovskite laminated solar cell and the positively-arranged perovskite laminated solar cell (at least one of three is selected) by adopting the following A-C: A, adding the N-heterocyclic carbene precursor into a perovskite light absorption layer; b, arranging an N-heterocyclic carbene precursor between the electron transport layer and the perovskite light absorption layer; and C, arranging the N-heterocyclic carbene precursor between the hole transport layer and the perovskite light absorption layer. According to the invention, the N-heterocyclic carbene precursor is adopted to modify the positive perovskite solar cell so as to improve the quality of the perovskite thin film, the photoelectric property of the cell and the long-term stability.

The present invention relates to a method for manufacturing a tandem solar cell. In addition, the present invention comprises the steps of: forming a CIGS thin-film solar cell on one surface of a substrate; and forming a perovskite solar cell on the other surface of the substrate having the CIGS thin-film solar cell formed thereon, wherein the steps are continuously performed by a roll-to-roll sputtering process, thereby simplifying the manufacturing process and facilitating mass production.

A control method of a tandem solar cell includes: determining a P-V curve of a silicon solar cell by performing scanning for generated electric power while changing a generated voltage of the silicon solar cell at regular intervals; performing power generation control of the silicon solar cell at a maximal power point of a P-V curve; predicting an optimum power generation voltage appropriate for a perovskite solar cell using information regarding a P-V curve of the silicon solar cell; and performing power generation control of the perovskite solar cell using an optimum power generation voltage.

A method for adjusting and measuring a photovoltaic power plant including a photovoltaic string having solar panels in series and an inverter to convert a DC voltage generated by the photovoltaic string into an AC voltage, the inverter having a DC-voltage inputs, includes:measuring a frequency of an AC voltage generated by the photovoltaic power plant and computing a frequency variation of the AC voltage with respect to a reference frequency and computing a power variation applied by the photovoltaic power plant based on the frequency variation,selecting a DC-voltage input, being the i-th input, to measure a curve of current vs. voltage of the input, having an initial DC voltage, thencomputing a residual power variation applied by the photovoltaic power plantif the residual power variation is non-zero, distributing it over inputs different from the i-th input,repeating the steps to create different points of the measured curve.