Improving Light Absorption in Dye Sensitized Solar Cells

A method for enhancing the photoelectric conversion efficiency of dye-sensitized solar cells through the use of metal-organic framework (MOF) modified titanium dioxide (TiO2) photoanodes. The method involves coating TiO2 with MOF layers that selectively adsorb light-absorbing dyes, thereby improving the material's ability to absorb visible light. This selective dye adsorption enables the TiO2 photoanode to exhibit higher photoelectric conversion efficiency compared to conventional TiO2-based materials. The MOF layers can be prepared through a sol-gel process, allowing for the precise control of dye adsorption properties.

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Co-sensitization of acid/alkali dye and small molecule sensitizers for improved solar cell performance. The method involves co-sensitizing two or more dye sensitizers with complementary absorption spectra, while simultaneously incorporating a small molecule sensitizer. The sensitizers are prepared through density functional theory calculations to optimize their molecular structure and absorption properties. The resulting sensitized photoanode exhibits enhanced energy conversion efficiency, improved spectral range, and increased stability compared to conventional dye sensitization methods.

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Sensitizing dye for photoelectric conversion, sensitizing dye composition for photoelectric conversion elements, and dye-sensitized solar cells with improved photoelectric conversion efficiency and stability. The sensitizing dye achieves enhanced absorption across a broader wavelength range through its novel molecular structure, enabling higher conversion rates in organic photovoltaic devices. The sensitizing dye composition can be used in photoelectric conversion elements and dye-sensitized solar cells, offering improved performance characteristics compared to conventional sensitizing dyes.

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Fiber dye-sensitized solar cell with high photoelectric conversion efficiency in indoor light environment, comprising vertically grown titanium dioxide nanotube array on a flexible substrate, with titanium dioxide nanoparticles uniformly filling the nanotube gaps and fully adsorbing the dye molecule N719 as the photoanode, and the photoanode is wound with carbon nanotube fibers as the counter electrode.

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Novel organic chromophores and a combination of chromophores as sensitizers for dye-sensitized solar cells (DSSCs) and other electronic devices. The novel chromophores and their combinations achieve enhanced charge injection and electron transfer through novel tautomeric structures that enable efficient charge transfer processes. These chromophores and their combinations exhibit improved performance compared to traditional sensitizers, enabling faster electron transfer rates and higher power conversion efficiencies in DSSCs and other electronic devices.

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A triphenyldihydroacridine dye with enhanced photoelectric performance in dye-sensitized solar cells. The dye combines a 9,9', 10-triphenyldihydroxyl donor with a sialox acceptor and an oligomeric phenophene bridge. This structure enables improved electron transfer within the dye molecule, while the oligomeric phenophene bridge prevents aggregation. The dye achieves high photoelectric efficiency and stability in dye-sensitized solar cells, with enhanced open-circuit voltage and long-term stability compared to conventional sensitizers.

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A composite electrode for dye-sensitized solar cells that enhances photocurrent density through enhanced charge injection kinetics. The composite electrode incorporates a dye-sensitized semiconductor material with a functional dye that selectively absorbs light in the visible spectrum. The dye's active absorption maximizes charge generation while minimizing recombination, leading to improved electron-hole pair formation and increased photocurrent density. The dye-sensitized semiconductor material itself serves as the electrode component, with the functional dye acting as a sensitive indicator of charge generation.

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A near-infrared broadband absorption photoanode for dye-sensitized solar cells that enables efficient conversion of infrared light. The photoanode comprises a conductive glass substrate, a titanium dioxide layer with N719 dye, and a core-shell upconversion nanocrystal layer composed of NaLuF4@NaErF4@NaLuF4. The core-shell nanocrystals absorb infrared light in the 1532nm range, converting it into visible light across the 500-700nm spectrum. This broadens the spectral response of conventional dye-sensitized solar cells, enabling higher efficiency conversion of solar energy.

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Dye-sensitized solar cells with enhanced light trapping capabilities through a novel porous semiconductor layer. The cells incorporate a transparent conductive substrate, specifically FTO glass, and a titanium dioxide-based porous semiconductor layer. The porous layer, comprising zinc oxide, niobium pentoxide, or bustard trioxide, provides efficient light absorption while maintaining electrical conductivity. This architecture enables improved charge separation and electron-hole transport, thereby enhancing the overall photoelectric conversion efficiency of the solar cells.

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Dye-sensitized solar cell photo-anode with high dye adsorption capacity. The dye adsorption capacity can be effectively improved. The preparation method includes ultrafast laser etching, calcining the composite structure, and subjecting the three-dimensional Ti-based TiO to2Calcining the composite structure, and then carrying out dye adsorption, sensitization treatment and post-treatment.

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A method for enhancing the photoelectric conversion efficiency of dye-sensitized solar cells through the incorporation of a novel semiconductor material, specifically a carbon nitride-based photocatalyst, into the photoanode structure. The photocatalyst, Melem (C6N7(NH2)3), is specifically engineered to optimize the semiconductor bandgap and light absorption properties, thereby significantly increasing the solar energy conversion capability of the solar cell. The photocatalyst is incorporated into the photoanode material through a controlled doping process, enabling enhanced charge separation efficiency and improved overall solar energy conversion performance.

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A solar cell photoanode that enhances dye-sensitized solar cell (DSSC) performance by incorporating TiO2 nanowires (NWs) into a TiO2 nanoparticle (NP) composite structure. The composite structure combines the high surface area and charge transport capabilities of TiO2 NWs with the photocatalytic activity of TiO2 NP. The TiO2 NWs are prepared through a controlled nucleation and growth process, while the TiO2 NP is synthesized through a sol-gel method. The composite TiO2 NWs/TiO2 NP structure is then incorporated into the DSSC photoanode, where the TiO2 NWs enhance electron collection efficiency while the TiO2 NP enhances photocatalytic activity.

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Organic photosensitive dye with improved synthesis and application properties. The dye is synthesized through a novel Knoevenagel condensation reaction that enables efficient synthesis of the dye's core structure. The resulting dye exhibits enhanced photoelectric conversion efficiency compared to traditional metal-organic dyes, particularly in DSC applications. The dye's unique structure enables selective sensitization of photoanode materials, enabling high-performance solar cells with improved charge carrier collection efficiency.

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Double π-A type organic dye for dye-sensitized solar cells that combines porphyrin with triphenylamine as electron donors and benzoic acid as electron acceptors. The modified dye incorporates an alkyl chain between the porphyrin and triphenylamine units, enhancing its photoelectric conversion efficiency compared to single D-π-A dyes. The dye's molecular structure features a porphyrin bridge connecting the triphenylamine donor and benzoic acid acceptor, while the alkyl chain provides a flexible and stable linkage. This design enables improved performance in dye-sensitized solar cells through enhanced charge transfer and electron mobility.

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Dye-sensitized solar cells with improved current uniformity and efficiency through a novel light-absorbing layer architecture. The cell features alternating light-absorbing layers comprising multiple dye layers, where each dye layer is applied through a cocktail method. This multi-layered approach enables direct absorption of light through the counter electrode and electrolyte while maintaining high current production capacity. The alternating arrangement of light-absorbing layers on both substrate surfaces ensures uniform light absorption across the cell, while the counter electrode is positioned to maximize light absorption efficiency.

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Organic dye-sensitized solar cell with improved performance and cost-effectiveness. The cell comprises an organic dye-sensitized photoanode, a composite counter electrode, and a gel electrolyte. The counter electrode is fabricated using a conductive polymer matrix, which enhances its electrical conductivity and catalytic activity. The organic dye-sensitized photoanode and gel electrolyte are integrated between the counter electrode layers, enabling efficient electron transfer and improved light absorption. The counter electrode is fabricated through a conductive polymer matrix, which provides superior electrical conductivity and catalytic activity compared to traditional platinum-based counter electrodes. This design enables the production of high-performance organic dye-sensitized solar cells with reduced material costs and environmental impact.

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Dye-sensitized solar cells with improved electron mobility and dye adsorption efficiency, achieved through a novel photoelectrode preparation method. The method involves creating a nitrogen-doped titanium oxide (TiO2) photoelectrode with graphene oxide incorporated between its grains. This TiO2-NTx-TiO2 composite exhibits enhanced electron mobility and dye adsorption capabilities compared to conventional TiO2-based photoelectrodes. The composite photoelectrode is prepared through a specific reaction sequence involving TiO2 precursor, nitrogen precursor, graphene oxide, and ultrasonic treatment. The resulting photoelectrode exhibits improved light conversion efficiency and charge transport characteristics, enabling higher power output from dye-sensitized solar cells.

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A method for preparing TiO2 NS/graphene composite film dye-sensitized solar cells through a novel approach to enhance the performance of dye-sensitized solar cells. The method involves creating TiO2 NS/graphene composite films by combining nanoscale TiO2 nanoparticles with graphene layers, followed by the deposition of these composite films onto a substrate. This composite film structure combines the high surface area of graphene with the stability and light-absorbing properties of TiO2 nanoparticles, resulting in improved dye-sensitized solar cell performance.

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Indolopyrrole thiophene photosensitive dyes for solar cells, comprising a thiophene ring with an indolopyrrole core. The dye contains a thiophene ring with an indolopyrrole core, which is synthesized through a novel reaction pathway involving a combination of o-dichlorobenzene and triphenylphosphine. The resulting compound exhibits high photochemical stability and efficient absorption in the visible spectrum, making it suitable for use in solar cells.

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Zinc porphyrin with triphenylamine as an electron donor group, synthesized through a novel method involving the coordination of diphenylamine to zinc porphyrin. The resulting zinc porphyrin exhibits enhanced electron mobility and stability, making it an effective electron donor for dye-sensitized solar cells. The synthesis pathway involves the coordination of diphenylamine to zinc porphyrin, followed by oxidation to form the final zinc porphyrin. This approach enables the creation of zinc porphyrins with triphenylamine as an electron donor group, which can be used as a sensitizer in dye-sensitized solar cells.

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