Femtosecond Laser Treatment for Enhanced Red Spectrum Absorption

A side-chain-controlled organic photovoltaic cell acceptor material that enables high-efficiency devices through optimized side chain modification. The material, comprising a donor or acceptor with precisely engineered side chains, achieves photovoltaic performance without additives, particularly in large-area preparation techniques. The side chain modifications enhance light absorption and energy level while maintaining stability and compatibility. This approach enables the development of high-performance organic photovoltaic cells suitable for commercial large-area production.

Source

A DA-type tetrarich-k dimethane derivative photoelectric functional material with improved performance and cost-effectiveness for solar cells. The material comprises a conjugated donor-acceptor system formed through a novel DA-type tetrarich-k structure, which combines a donor unit with a conjugated acceptor unit. The material achieves high PCE values through its optimized molecular structure, which enables consistent absorption across the solar spectrum. The material can be used as a photosensitive layer in solar cells, particularly in thin-film devices where conventional organic materials often suffer from low yields and harsh synthesis conditions.

Source

A novel donor for organic solar cells based on the BODIPY framework that achieves high photovoltaic efficiency. The donor, BDP-1, combines the photophysical properties of BODIPY with the advantages of conventional donor materials, particularly in bulk heterojunction solar cells. The donor's broad absorption spectrum, high hole mobility, and excellent film-forming properties enable efficient charge carrier generation, while the BODIPY core provides a robust electron-donating system. The donor's unique structure allows for enhanced π-n stacking between donor and acceptor molecules, leading to improved device performance compared to conventional donors.

Source

Wireless power transfer system using organic photovoltaic cells enables efficient energy transfer across short distances through selective excitation of photovoltaic cells based on their intrinsic absorption spectra. The system utilizes laser technology with tailored wavelength matching to organic photovoltaic cells, enabling conversion of laser energy into electrical power at optimal efficiency levels. This approach expands the application potential of laser-based wireless power transfer beyond traditional silicon-based systems.

Source

Organic conjugated small molecule material containing cyanoindanone end groups with enhanced photovoltaic performance. The terminal group of these materials exhibits superior self-assembly and aggregation properties, enabling efficient intermolecular interactions that improve device stability and efficiency. The material's conjugated structure enables optimal energy matching between visible and near-infrared light, while its terminal group properties facilitate efficient electron transfer. These characteristics enable high-efficiency organic solar cells with improved stability and performance compared to conventional fullerene-based materials.

Source

Benzobisphene-based donor materials for organic solar cells that enhance photovoltaic efficiency beyond traditional fullerene acceptors. The donor materials feature a wide bandgap structure with a molecular weight of 164 carbon atoms, achieving high conversion efficiencies in solar cells. The materials can be synthesized through a catalyst-assisted reaction pathway, enabling precise control over their molecular structure. These donor materials exhibit improved absorption properties compared to conventional fullerene acceptors, enabling efficient energy conversion in solar cells.

Source

Organic conjugated small molecule material containing thianthrene terminal group, with improved photovoltaic performance through enhanced self-assembly and molecular packing characteristics. The material features thianthrene terminal groups with larger conjugation areas and aggregation properties, enabling improved photovoltaic performance through enhanced intermolecular interactions. The material's photovoltaic properties, including efficiency and short-circuit current density, are measured in organic solar cell devices, demonstrating its potential for high-performance organic solar cells.

Source

Organic photothermal material DDPA-PDN with enhanced absorption and conversion efficiency for solar-powered hydropower integration. The material comprises a phenazinoanthracene derivative acceptor with conjugated rigid planar structure, achieving broad-spectrum absorption across 350-850nm. It demonstrates a photothermal conversion efficiency of 56.23% and enables simultaneous water and electricity generation through solar energy under sunlight intensity. The material's morphology can be engineered through layer-by-layer deposition, enabling scalable production for cogeneration applications.

Source

Near-infrared double-cable polymer for high-efficiency single-component organic solar cells. The polymer combines electron donors and acceptors through covalent bonds, enabling efficient absorption across both visible and near-infrared spectral ranges. The polymer's unique structure allows precise control over absorption characteristics, enabling high short-circuit current densities and improved solar energy conversion efficiency.

Source

Organic electron acceptor materials with a fused ring of sulfur atom, enabling enhanced device performance in organic solar cells. The material features a sulfur-based fused ring structure that improves electron mobility compared to traditional carbon-based systems. This structure enables efficient charge transport and light absorption, addressing limitations in conventional electron acceptor materials. The material's preparation method involves a novel approach that enables the formation of the fused ring structure through a controlled reaction of sulfur-containing precursors.

Source

Benzoxazine diazepam boron nitrogen derivative and its application in organic solar cells, specifically as an acceptor material in organic solar cells, that addresses the efficiency limitations of traditional small molecule acceptors through molecular design. The novel material combines boron and nitrogen to create a conjugated system with tailored energy levels, enabling higher charge carrier mobility and reduced triplet state recombination compared to conventional acceptors. The material's unique molecular structure enables efficient charge transport and exciton pair formation, thereby enhancing device efficiency in organic solar cells.

Source

A photoelectric active layer for organic solar cells that simultaneously reduces bandgap and open-circuit voltage loss through a novel three-phase system. The active layer comprises a donor polymer, a non-fullerene acceptor, and a conjugated small molecule donor, where the donor polymer and conjugated small molecule donor are incorporated into a single host material. This host material enables charge transfer and collection across the donor polymer and conjugated small molecule donor, while maintaining the conjugated structure. The donor polymer and conjugated small molecule donor materials are combined in a specific ratio to achieve optimal charge transport properties, while the non-fullerene acceptor provides the necessary bandgap reduction. This three-phase system enables significant improvements in efficiency compared to traditional ternary systems.

Source

A method for preparing solar cells with enhanced efficiency by integrating a nanostructured photocathode with a thin alumina passivation layer. The method involves creating nanostructured nickel oxide layers on nickel substrates using femtosecond laser technology, followed by high-temperature oxidation and deposition of ultra-thin alumina layers. This nanostructured photocathode with passivation layer configuration enables improved charge carrier separation and reduced recombination, leading to increased solar cell efficiency.

Source

A novel fluorinated conjugated polymer for high-efficiency organic photovoltaic cells, specifically designed to enhance open-circuit voltage and overall photovoltaic performance. The polymer incorporates a fluorinated isomer of isoindigo with enhanced electron-donating capabilities through strategic positioning of fluorine substituents. This modification enables a significant reduction in the HOMO energy level, resulting in improved device efficiency compared to conventional fluorinated isomers. The fluorine substitution pattern is optimized to maximize electron-donating capacity while maintaining structural integrity and photovoltaic stability.

Source

An alkyl diamine organic doped PEDOT:PSS organic photoelectric material that overcomes the limitations of conventional PEDOT:PSS hole transport materials. The material incorporates alkyl diamine organic dopants into the PEDOT:PSS film, achieving enhanced conductivity and improved work function through the modulation of the material's electronic properties. The alkyl diamine dopants selectively modify the PEDOT:PSS film while maintaining its excellent thermal and electrical stability, enabling high-efficiency organic photovoltaic devices.

Source

A new class of non-fullerene acceptor materials for organic solar cells that achieves high efficiency through a novel three-dimensional structure featuring 8-hydroxyquinoline aluminum as the core unit. The material combines 8-hydroxyquinoline aluminum with a 4,4'-bipyridine-based donor, which enhances electron mobility while preventing self-aggregation. The structure is engineered to optimize absorption across the visible spectrum, particularly in the wide bandgap region. The material demonstrates improved photovoltaic efficiency compared to conventional fullerene-based acceptors, with enhanced light quantum yield and stability. The 4,4'-bipyridine component acts as a selective acceptor, while the 8-hydroxyquinoline aluminum core provides high electron mobility and stability.

Source

Wide bandgap polymer donor material for organic solar cells featuring benzodiazepine electron-deficient units. The material combines acceptor units with electron-donating capabilities, along with soluble alkyl chains on the phenophene bridge, to enhance electronic structure and charge transfer properties. This approach enables improved absorption, crystallinity, and carrier mobility in organic solar cells.

Source

A polymer receptor material with A-DA'DA-type small molecule acceptor units that enables high-efficiency organic photovoltaic solar cells. The material comprises A-DA'DA-type small molecule acceptor units that form a conjugated system with polymer donors. The A-DA'DA units are connected by bridging units to create a conjugated polymer receptor, which is then integrated into organic photovoltaic cells. This conjugated system enables broad absorption across the solar spectrum, leading to enhanced photoelectric conversion efficiency. The receptor material can be prepared through a simple polymerization process, enabling large-scale production of high-performance organic solar cells.

Source

Benzoxadiazole-based acceptor materials for organic solar cells, featuring a novel molecular structure that enhances absorption and carrier mobility. The acceptor contains a benzoxadiazole unit connected to an electron-withdrawing donor unit through a nitrogen-containing carbon bridge, forming a DAD (diaryl-aniline) structure. This design enables precise energy level adjustment and improved carrier transport properties, leading to enhanced photovoltaic performance in organic solar cells.

Source

Boron-nitrogen coordination polymer acceptor materials for organic photovoltaics, featuring a conjugated backbone with pendant aryl groups and boron-nitrogen coordination bonds. These materials achieve broader absorption spectra, improved electron mobility, and enhanced phase separation in active layer blends compared to conventional polymer acceptors. The boron-nitrogen coordination bonds provide enhanced electron transfer capabilities, while the pendant aryl groups facilitate efficient charge transfer. The resulting materials enable higher power conversion efficiency in organic photovoltaic devices.

Source