Polymer-Based Organic Photovoltaic Solar Cells

High-efficiency ternary quasi-planar heterojunction organic solar cells with improved stability and performance compared to prior ternary cells. The cells have a composite active layer containing a donor polymer (PBDB-TF) and two acceptor polymers (BTP-BO-4Cl and BTP-BO) that are phase-separated. The acceptors have different terminal functional groups to enhance binding. An additive (1,8-diiodooctane) is added to the acceptor composite to improve light absorption and hole mobility. The phase separation and additive help prevent agglomeration and stabilize the cell.

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A conjugated polymer solution that enables the preparation of flexible organic solar cells with improved mechanical stability and thermal resistance through the synergistic effect of non-covalent interactions between a chlorine-containing polyolefin and carbonyl-containing conjugated polymers. The solution combines a conjugated polymer with a chlorine-containing polyolefin, enabling enhanced film properties through the formation of non-covalent interactions that reduce aggregation and promote cross-linking. This approach enables the fabrication of flexible organic solar cells with superior mechanical performance compared to conventional methods.

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Organic solar cells with improved durability and performance under various environmental conditions. The solar cell comprises a hole-transporting polymer with enhanced thermal and humidity stability, combined with a photoelectric conversion element and organic thin-film structure. The polymer enables efficient conversion of weak light sources, while maintaining high mobility and durability across temperature and humidity ranges.

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High-efficiency quaternary organic solar cell with vertical phase separation in the active layer for improved charge extraction. The cell uses a blend of four materials - wide bandgap polymer donor PM6 and three non-fullerene acceptors L8-B0, BTP-S8, and BTP-S2. The specific choice of materials allows complementary absorption and controlled morphology to optimize charge collection. The cell structure is anode/modification layer/PM6:(L8-B0, BTP-S8, BTP-S2)/cathode modification layer/cathode.

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Inverted polymer photovoltaic cell with improved performance through a novel anode interlayer design. The cell comprises an active layer with photoactive organic polymer donors and acceptors, a buffer layer comprising PEDOT:PSS, and a second buffer layer comprising heteropolyacid and amino compounds. The second buffer layer is interposed between the PEDOT:PSS layer and the active layer, creating a uniform interface. This design enhances adhesion between the active layer and anode interlayer, while maintaining high electron mobility and preventing degradation through water management.

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Organic solar cells that achieve higher power conversion efficiency through the use of well-formed polymer-based electron acceptor materials. The solar cells incorporate a photoactive layer with a bilayer structure featuring an n-type organic material layer and a p-type organic material layer, where the p-type layer comprises a polymer containing non-fullerene-based electron acceptor materials. This polymer-based acceptor system enables enhanced electron transport and collection, leading to improved solar cell efficiency compared to conventional organic solar cells.

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Organic solar cell with improved efficiency and preparation method. The cell structure has a sequential arrangement of conductive base, buffer layers, and active layer containing electron donor PM6 and non-fullerene acceptor N3, without fullerene. The active layer also contains a small amount of bis(pentafluorophenyl)zinc. This composition and order of materials in the active layer improves the conversion efficiency of organic solar cells. The cell is prepared by coating the layers in sequence on a conductive substrate, annealing after each layer, and adding the top electrode.

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Polymeric photovoltaic cells with inverted structure comprising a conjugated polymer containing an anthradithiophene derivative and an organic electron-acceptor compound, where the conjugated polymer comprises an anthradithiophene derivative with a benzodithiophene-4,8-dione derivative.

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Organic solar cells with enhanced power conversion efficiency through the use of a novel two-dimensional conjugated polymer active layer. The active layer comprises a donor polymer with a π-conjugated structure that combines with a donor material to form a non-fullerene-based acceptor system. The donor polymer achieves high open-circuit voltage and short-circuit current through its π-conjugated structure, while the donor material provides electron acceptor capabilities. The resulting active layer composition enables high power conversion efficiency in organic solar cells, particularly when using non-fullerene materials.

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Electron transport layer for organic photovoltaic devices that enhances charge collection efficiency through individualized carbon nanotube dispersion. The layer comprises a conjugated polymer soluble in alcohol and carbon nanotubes, with the polymer selectively dispersed in a carbon nanotube solution. The dispersion enables individual carbon nanotube strands to maintain their optical properties, resulting in a uniform charge collection across the photovoltaic device. The layer is applied between the photoactive layer and the electrodes, providing improved charge collection efficiency compared to conventional carbon nanotube-based solutions.

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High-stability translucent all-polymer solar cell device based on light management engineering and preparation method. The device comprises a substrate, transparent anode, hole transport layer, active layer, cathode interface layer, and transparent cathode. The active layer is a thin film with a bulk heterojunction structure containing electron donor and acceptor materials, with donor material to acceptor material mass ratio ranging from 1:0.1 to 1:10. The device achieves high light transmission while maintaining stability through precise light management engineering.

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A semi-transparent organic photovoltaic cell using conductive polymer electrodes that achieves high efficiency while reducing manufacturing complexity. The cell incorporates a conductive polymer layer that simultaneously functions as an electrode and hole transport layer, eliminating the need for separate metal electrodes. The polymer layer is formed through a solution process, enabling rapid manufacturing and cost-effective production of the transparent photovoltaic cell.

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Metal oxide electron collecting layer for inverted organic solar cells with enhanced power conversion efficiency and reduced production costs. The layer comprises a nano-scale crater structure with a non-fullerene organic material, enabling efficient electron collection through the crater's unique surface properties. The crater structure is fabricated through a low-temperature process, allowing for flexible manufacturing while maintaining superior electron collection performance compared to conventional fullerene-based materials. The resulting inverted organic solar cell achieves higher power conversion efficiency than conventional organic solar cells, with a production process that can be performed at temperatures as low as 150°C.

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High-efficiency organic solar cells based on poly(3-hexylthiophene) achieve enhanced solar conversion efficiency through novel non-fullerene acceptor architectures. The approach involves modifying the central unit of these non-fullerene acceptors to incorporate spirofluorene or dithiophene units, which enables precise energy level matching with poly(3-hexylthiophene) while maintaining broad light absorption. These modified acceptors exhibit improved carrier mobility and Voc, leading to higher PCE values compared to conventional P3HT-based solar cells.

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Polymer photovoltaic cells with inverted structures that achieve higher efficiency than conventional organic solar cells. The cells incorporate an anode buffer layer comprising an orifice transport material, where the transport material is prepared through a process involving an aqueous solution of molybdenum oxide. This anode buffer layer enables efficient electron transport between the active layer and counter electrode, while maintaining the cell's open circuit voltage and current density over time. The anode buffer layer can be prepared through various deposition techniques, including vacuum evaporation, centrifugal coating, and gravure printing.

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Organic solar cells that achieve higher power conversion efficiency through optimized charge carrier transport layers. The cells employ a single molecular material donor and a polymer material as the charge carrier layer, with the donor serving as both the electron donor and hole donor. This approach eliminates the need for separate electron and hole transport layers, reducing manufacturing complexity and costs. The donor material is a single molecular compound, while the polymer material is a non-crystalline copolymer. The polymer material provides enhanced charge carrier mobility and stability, while the molecular compound donor enables efficient charge separation.

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Polymer solar cells with enhanced energy conversion efficiency through a novel bulk heterojunction architecture. The cells feature a PTB7/PC71BM active layer, which combines the benefits of both organic and inorganic photovoltaic materials. The active layer is prepared through a novel process involving a chlorobenzene solution of PTB7 and PC71BM, allowing for precise control over the organic material composition. The architecture incorporates a cross-linked structure that facilitates efficient photogenerated exciton dissociation and charge carrier transport, leading to improved solar cell performance compared to conventional bulk heterojunction structures.

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High-efficiency ternary organic solar cells that achieve significant increases in short-circuit current density while maintaining high open-circuit voltage. The ternary solar cell incorporates a third component that is complementary to the original binary blend film, enabling broadened light absorption and enhanced spectral response. This complementary component enables the formation of a continuous energy level structure across the solar spectrum, thereby increasing the solar cell's absorption capacity and short-circuit current density. The ternary solar cell achieves this through the incorporation of a third component with a narrower bandgap than the original binary material system, which enables the formation of a continuous energy band across the solar spectrum.

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Ternary all-polymer solar cells that achieve enhanced photoelectric conversion efficiency through the strategic incorporation of a strong crystalline non-fullerene small molecule acceptor into the polymer-based photovoltaic system. The ternary system combines a donor polymer with two complementary non-fullerene acceptors, where the acceptor material is specifically selected to match the absorption spectrum and energy level of the donor polymer. This dual-acceptor approach enables improved charge carrier separation, reduced recombination, and enhanced charge generation through phase separation. The ternary system demonstrates improved device performance compared to conventional binary systems, particularly at high power levels.

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Ternary system heterostructure polymer solar cells that achieve enhanced photoelectric conversion through the integration of a narrow band gap electron donor polymer with fullerene electron acceptor. The ternary system enables stable and efficient solar cells with improved light absorption beyond traditional binary heterojunctions, despite the poor miscibility of the donor polymer with fullerene materials. The ternary system can be achieved through controlled thermal processing of the donor polymer, resulting in a stable and high-efficiency solar cell architecture.

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