Organic-Inorganic Tandem Solar Cells

A solar cell with improved tandem solar cell performance through the use of a mutually doped connection layer. The connection layer integrates the hole transport layer from the perovskite top cell and the N-type electron selection layer from the heterojunction bottom cell, eliminating the need for separate tunneling layers. This design eliminates contact resistance and recombination losses typically associated with conventional tandem solar cells.

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Solar cell module with improved efficiency and reliability through a tandem structure featuring a perovskite compound layer. The module comprises a perovskite layer, a transport layer, and a second transport layer, with the perovskite layer forming a thick film and uniform composition. The second transport layer is arranged below the perovskite layer and has a different material or structure. The perovskite layer is connected to a bottom electrode, while the second transport layer is connected to a bottom electrode. The perovskite layer is stacked on top of the transport layers, forming a tandem structure with a larger area than the perovskite layer. The module achieves enhanced efficiency through the tandem architecture while maintaining reliability through the single-layer second transport layer.

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Solar cell with enhanced tandem structure that achieves higher efficiency and reduced current leakage through optimized perovskite layer design. The cell comprises a tandem structure with two photoelectric conversion layers, each featuring a perovskite compound layer, transport layers, and electrodes. The perovskite layers are arranged in a specific configuration to minimize current leakage while maintaining high photoelectric conversion efficiency. The cell architecture incorporates a side insulating layer that abuts the perovskite layers, with a pad electrode and busbar electrodes extending along the minor axis. This configuration enables the tandem structure to achieve improved tandem efficiency while maintaining current leakage properties.

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Laminated solar cells with improved efficiency and stability through a novel tandem architecture. The cells comprise a first sub-cell with a light-absorbing layer, a transport layer, and a second sub-cell with a transport layer, light-absorbing layer, and transport layer. The sub-cells are arranged in a specific sequence along the incident solar direction, with the second sub-cell having a transport layer between its light-absorbing layer and transport layer. The sub-cells are joined by a tunneling structure with a body layer and an auxiliary layer, where the auxiliary layer is between the body layer and the transport layer in the second sub-cell. This configuration enables enhanced carrier transport efficiency while maintaining stability through the auxiliary layer.

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Three-tandem (3T) perovskite/silicon (PVT)-based tandem solar cell that achieves high power conversion efficiency through a novel tandem architecture. The cell comprises an antireflection coating, a transparent conductive oxide layer, a hole transport layer, a perovskite layer, an electron transport layer, and buried contacts. The perovskite layer serves as the top sub-cell, while the silicon solar cell acts as the bottom sub-cell. The middle contact layer enables current collection between the two sub-cells. The cell achieves efficiency of 25% and demonstrates improved performance compared to conventional 2T and 4T tandem architectures.

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Tandem solar cells that achieve higher photoelectric conversion efficiency through a novel approach to forming functional layers on textured silicon substrates. The cells employ a textured silicon substrate as the bottom cell, with a perovskite absorption layer grown on a second ordering-inducing layer located between the bottom cell and the hole transport layer. The second ordering-inducing layer acts as an intermediate layer that enables controlled growth of the perovskite absorption layer, while the hole transport layer grows in an ordered manner with improved crystallinity and grain size. This approach addresses the challenges of forming uniform layers on textured substrates, particularly in perovskite solar cells where conventional solution-based deposition methods face issues of material accumulation and disorder.

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A tandem laminated solar cell with improved conversion efficiency by using a stack of perovskite and silicon layers instead of a single layer. The cell has a sequence of transparent electrode, electron transport layer, perovskite layer, silicon layer, hole transport layer, and carbon electrode. The perovskite layer absorbs short wavelength light, while the silicon layer absorbs long wavelength light, expanding the response range and increasing absorption. The layers are fixedly connected and prepared using deposition or spin coating methods.

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A solar cell with improved light absorption and transmission through a novel organic light-absorbing layer design. The layer comprises a donor material and an acceptor material, allowing separate absorption and transmission paths for light. This separation enables enhanced light absorption by the donor material and efficient light transmission by the acceptor material, resulting in improved overall photoelectric conversion efficiency. The layer is deposited using a solution coating method, enabling precise control over its composition and thickness.

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A tandem solar cell with improved performance through a novel connection layer design. The cell comprises a bottom cell, a top cell, and a connection layer arranged between them. The connection layer incorporates a tunnel oxide layer, a phosphorus-doped polysilicon film, and a metal oxide layer in sequence from bottom to top. The phosphorus-doped polysilicon film is prepared through a thermal evaporation process before metal oxide deposition, followed by annealing treatment to enhance its properties. This connection layer architecture enables the perovskite cell to establish a direct electron-hole recombination pathway while maintaining the crystalline silicon cell's performance.

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A two-terminal tandem solar cell design with a simplified structure and improved efficiency compared to conventional tandem cells. The cell has a layered structure with a silicon base, emitter, electron transport layer, tunnel junction, and perovskite layer. The tunnel junction is formed by doping a region of the electron transport layer adjacent to the silicon emitter during deposition. This eliminates the need for additional processing steps and materials like tunnel junction layers to connect the silicon and perovskite cells. The doped junction provides low resistance contact while being transparent to higher energy silicon cell photons. This reduces power losses and improves overall efficiency compared to separate tunnel junctions.

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A tandem solar cell made by stacking a cadmium selenide (CdSe) top cell and a crystalline silicon bottom cell. The CdSe cell absorbs high-energy light and the silicon cell absorbs lower energy light, improving overall conversion efficiency beyond what a single CdSe or silicon cell can achieve. The CdSe cell is made by evaporating CdSe onto a transparent electrode, and the silicon cell is made by growing silicon layers on a substrate. The cells are then stacked and connected in series to create the tandem solar cell.

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A simplified tandem solar cell structure that achieves comparable photoelectric performance to conventional tandem structures while reducing fabrication complexity. The structure comprises a transparent conductive oxide (TCO) layer and a perovskite active layer, with a conductive transparent oxide junction layer that serves both as a recombination junction and load selection interface. The TCO layer enables direct contact between the perovskite active layer and the silicon substrate, while the TCO junction layer facilitates efficient current collection. This architecture eliminates the need for multiple interfaces and series resistances typically present in conventional tandem structures.

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A tandem solar cell comprising two photovoltaic cells with different bandgaps, where the tandem cell achieves improved efficiency by stacking the cells. The tandem cell comprises a substrate, light absorption layer, back contact buffer layer I, back contact buffer layer II, and back electrode layer arranged in sequence. The selenium-doped cadmium telluride cell has a substrate, light absorption layer, back contact buffer layer I, back contact buffer layer II, and back electrode layer, while the perovskite cell has a substrate, hole transport layer, light absorption layer, and back electrode layer. The selenium-doped cadmium telluride cell is arranged opposite to the perovskite cell, with the negative electrode of the selenium-doped cadmium telluride cell facing the perovskite cell's positive terminal.

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A tandem solar cell structure that improves overall efficiency by combining a copper-based chalcogenide cell with a perovskite cell. The two cells are stacked in sequence with an interconnect between them. The copper-based cell can be cadmium zinc tin selenide, indium gallium selenide, or indium selenide. The copper-based cell provides the bottom cell with a wider bandgap and better match to the perovskite cell's bandgap. The tunneling interconnect allows charge transfer between cells. The stack is built by sequentially growing the cells using vacuum deposition.

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A solar cell that achieves both high durability and enhanced photoelectric conversion efficiency through a novel anode structure. The solar cell comprises a perovskite-based photovoltaic layer, a metal oxide intermediate layer, and a metal anode. The perovskite layer is combined with the metal oxide intermediate layer and metal anode to form a solar cell with improved durability and photoelectric conversion efficiency compared to conventional solar cells.

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Transparent tandem organic solar cells that combine power generation and thermal insulation capabilities through a novel multi-layered architecture. The cells employ a series of interconnecting organic active layers with selective blocking of UV and IR wavelengths, while maintaining high transparency. A reflective mirror on the rear sub-cell enhances infrared energy absorption, while a DBR on the rear sub-cell prevents infrared transmission. This configuration enables visible light transmission while achieving high power conversion efficiency and thermal insulation performance.

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3-terminal tandem solar cell with improved efficiency and cost-effectiveness. The cell features a perovskite-based photovoltaic layer with a front and back interface, and a novel design where the front contacts have different polarities compared to the back contacts. This configuration enables current matching between the front and back layers while maintaining the conventional comb-toothed architecture. The cell architecture combines the benefits of conventional tandem cells with the advantages of perovskite-based photovoltaics, achieving higher efficiency and reduced manufacturing costs.

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Multi-junction tandem organic solar cells with plasmonic nanostructures achieve enhanced absorption and efficiency through the combination of organic semiconductor materials and metallic nanostructures. The tandem cells feature a bottom subcell with a high-bandgap material and a top subcell with a low-bandgap material, connected in series or parallel. The bottom subcell contains metallic nanostructures like Ag nanostars, which significantly improve absorption beyond the bandgap limit of the organic material, while the top subcell retains the organic material. This configuration enables efficient absorption across the solar spectrum, with the bottom subcell absorbing light in the visible and near-infrared regions and the top subcell absorbing light in the visible region.

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Tandem solar cell with enhanced efficiency through a novel interconnection layer. The cell features a front and rear cell junction with an interconnection layer comprising a metal oxide, p-type metal, and a neutral polymer. This layer acts as a connecting layer between the front and rear cells, enabling efficient electron-hole recombination while maintaining transparency. The interconnection layer's thickness can be precisely controlled to balance electron transport and light transmission. The cell achieves power conversion efficiencies of 11.5% to 17% through optimized layer configurations.

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A solar cell with enhanced photoelectric conversion efficiency and thermal stability through a novel hole transport layer design. The cell incorporates a perovskite solar cell structure with an organic-inorganic perovskite photoelectric conversion layer, featuring a hole transport layer between the perovskite layer and the external electrode. The hole transport layer is engineered to incorporate specific organic compounds, such as lithium or magnesium bis(trifluoromethanesulfonimide), which enhance hole mobility while maintaining thermal stability. This design enables high-efficiency solar cells with improved thermal resistance compared to conventional perovskite solar cells.

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