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Article
Chemistry, Multidisciplinary
Min Li et al.
Summary: The investigation of scalable coating techniques for high-performance photoactive materials involves studying the drying dynamics and kinetic quenching depth related degradation. The optimized PM6:BTP-eC9-based organic solar cells achieve power conversion efficiencies up to 16.81% by controlling film formation kinetics. The photoluminescence lifetime distribution serves as an alternative probe for the kinetic quenching depth, governing the degradation rate and providing mechanistic understanding of long-term stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuan Gao et al.
Summary: The use of combinatory blending strategy in designing efficient organic solar cells (OSCs) shows promise in increasing short-circuit current density and fill factor. This study presents a high-performance ternary all-small molecule OSC (all-SMOSCs) using a narrow-bandgap alloy acceptor and a wide-bandgap small molecule donor. By optimizing the weight ratio of the components, a champion efficiency of 18.02% is achieved, demonstrating the potential for high-performance ternary all-SMOSCs.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jianqiu Wang et al.
Summary: This study proposes the use of 3,5-dichlorobromobenzene (DCBB) to manipulate the morphology of bulk-heterojunction organic solar cells (OSCs), resulting in improved operability and photostability. Simulation experiments reveal the charge distribution and non-covalent interaction of DCBB with active layer materials. The addition of DCBB effectively tunes the aggregation behavior during film formation, leading to a phase separation and molecular packing that enhances the power conversion efficiency to 19.2%.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hongmei Zhuo et al.
Summary: Two giant molecule acceptors, EV-i and EV-o, with longer alkyl side chains were developed for fabricating high efficiency organic solar cells (OSCs). The OSC with EV-i as acceptor processed by the non-halogenated solvent exhibited a higher PCE of 18.27%, while EV-o showed a much lower PCE of 2.50%. This indicates that giant molecule acceptors with suitable linking site are excellent candidates for high performance OSCs processed by non-halogenated solvents.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Multidisciplinary Sciences
Jiehao Fu et al.
Summary: The authors achieved the suppression of non-radiative recombination loss and improved the performance of organic solar cells by regulating the self-organization of bulk-heterojunction in a non-monotonic manner. The efficiency of the organic solar cells reached over 19% with a low non-radiative recombination loss of 0.168 eV.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Lingchen Kong et al.
Summary: Additive engineering is crucial for the development of organic solar cells (OSCs) as it allows precise regulation of the active layer morphology. In this study, solid additives with low melting points were comprehensively investigated and compared for their effects on OSC performance. The results showed that one of the additives, 1-chloro-4-iodobenzene (CIB), had the most significant enhancements on the absorption coefficients and carrier transports, leading to higher power-conversion efficiencies (PCEs) in OSCs. Furthermore, CIB also showed universality as an in situ removable additive, producing remarkable PCEs in various active layer compositions.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Chengliang He et al.
Summary: This work introduces a symmetry-asymmetry dual-acceptor (SADA) strategy for constructing ternary devices, which increases both the power conversion efficiency (PCE) and the operational lifetime of organic solar cells (OSCs).
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Bowen Sun et al.
Summary: Research on the loss pathways and their impact on overall device performance in low-offset organic solar cell systems is crucial for improving efficiency.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Pengqing Bi et al.
Summary: In this study, a multiscale fibril network morphology is constructed in a PBQx-TCl:PBDB-TF:eC9-2Cl-based system by regulating phase-transition kinetics. The ideal fibril network morphology enables superior charge transfer and transport processes, resulting in enhanced photon utilization efficiency. The optimized ternary cell achieves a high power conversion efficiency of 19.51% in a single-junction OPV cell. Furthermore, a tandem OPV cell with an excellent PCE of more than 20% is fabricated to increase solar photon absorption. This study provides guidance for constructing an ideal multiscale fibril network morphology and improving the photon utilization efficiency of OPV cells.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaopeng Xu et al.
Summary: Sequential deposition is used to fabricate multicomponent organic solar cells with a double-bulk heterojunction structure, improving light absorption and morphology without complex optimization. The power conversion efficiency is improved from 18.25% to 19.61% compared to binary blend OSCs, while a quaternary blend of OSCs shows a reduced efficiency of 15.83%. This demonstrates the potential of the double-BHJ strategy in enhancing the performance of OSCs.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Donghui Li et al.
Summary: This study demonstrates the fibrillization of non-fullerene acceptors (NFAs) with the assistance of solvent additive to enhance the performance of organic solar cells (OSCs). The molecular dynamics simulations show that the additive enhances intermolecular packing and induces self-assembly of NFAs into fibril structures. The resulting OSCs show improved power conversion efficiency, light absorption, charge transport, and collection properties.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fei Meng et al.
Summary: The design and synthesis of two asymmetric silicon-oxygen bridged guest acceptors with distinct properties greatly improved the photovoltaic performance of ternary organic solar cells. Ternary devices incorporating these acceptors achieved high power conversion efficiencies of 18.22% and 18.77%. The fusion of five-membered carbon linkages and six-membered silicon-oxygen connection provided precise control of material properties, attracting significant attention for the development of more efficient OSCs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Energy & Fuels
Shufang Li et al.
Summary: A high-performance pseudo-bilayer heterojunction (PBHJ) organic solar cell with donor:acceptor (D:A) bilayer architecture is reported. The pseudo-bilayer films enable vertical distribution of cascaded components and large D/A interfaces for efficient exciton dissociation. The devices based on PM6:Y6 and PTQ10:Y6 exhibit high power conversion efficiencies of 17.73% and 17.81%, respectively.
Article
Engineering, Environmental
Xinrui Li et al.
Summary: Sequential layer-by-layer deposition method is a promising approach for highly efficient organic solar cells, but most devices prepared by this method use toxic solvents, hindering their commercial production. In this study, we successfully fabricated bilayer devices using a non-halogenated solvent and further improved their performance by doping a third component. Our results demonstrate that precise tuning of material distribution by layer-by-layer method, combined with the use of eco-friendly solvents, is an effective way to achieve high-performance organic solar cells.
CHEMICAL ENGINEERING JOURNAL
(2023)
Correction
Chemistry, Multidisciplinary
Mingwei Zhou et al.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ruijie Ma et al.
Summary: The morphological features and film formation processes of high-performance donor-acceptor binary photovoltaic blends using three representative solvents are investigated. It is found that the solvent used has a significant effect on the efficiency of the PM6:L8-BO system, while the PM6:eC9 system is less influenced by the solvent. The in situ and ex situ studies reveal the reasons behind the observed differences and provide insights into the optimization of organic solar cells.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ji Wan et al.
Summary: The reasonable application of traditional planar heterojunction (PHJ) structure, combined with sequential spin-coating and orthogonal solvent strategy, can solve the issues of organic solar cells (OSCs) with bulk heterojunction (BHJ) and emerging pseudoplanar heterojunction (PPHJ) structures, achieving high efficiency power conversion.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xinyun Dong et al.
Summary: This study investigates the correlation between chemical structure (side chains) and processing solvents to achieve high efficiency and long processing windows in large-area organic solar modules. It is found that the length of side chains on the pyrrole ring is a key factor influencing the aggregation of the active layer. By optimizing the side chain length, it is possible to inhibit excess aggregation and maintain high photovoltaic performance, leading to the fabrication of efficient organic solar modules.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xiaopeng Xu et al.
Summary: By utilizing a sequential solution processing method, a more suitable IHJ nanostructure for organic solar cells has been achieved, leading to an increased power conversion efficiency. The IHJ structure, compared to the BHJ structure, can efficiently dissociate excitons, reduce charge recombination, and facilitate the transport of free electrons and holes through more straightforward pathways, ultimately enhancing performance.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jianqiang Qin et al.
Summary: The study introduces a volatile solid additive-assisted sequential deposition strategy to optimize the morphology of the active layer in organic solar cells, resulting in enhanced performance. The combination of a volatile solid additive and sequential deposition method proves to be effective in developing high-performance OSCs.
Article
Chemistry, Multidisciplinary
Rui Sun et al.
Summary: The ternary strategy is an effective approach to achieve high-efficiency OSCs, but the nonradiative voltage loss limits further efficiency improvements. By incorporating an asymmetric guest acceptor BTP-2F2Cl, the OSCs show improved photoluminescence quantum yield, exciton diffusion length, and absorption spectrum, leading to enhanced power conversion efficiency.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Guang Zeng et al.
Summary: In this study, an ionic liquid (IL)-type reducing agent containing Cl- and a dihydroxyl group was used to control the reduction process of silver (Ag) in AgNW-based FTEs, achieving atomic-level contact between AgNWs and reduced Ag, thus improving the mechanical stability and optoelectronic properties of flexible FTEs.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Lei Zhu et al.
Summary: Morphological control of donor and acceptor domains is crucial for efficient organic photovoltaics, and this study demonstrates a double-fibril network strategy to achieve a high power conversion efficiency of 19.3%.
Article
Chemistry, Physical
Jianhua Jing et al.
Summary: This study reports a simple yet effective strategy for constructing high-performance semitransparent organic solar cells (ST-OSCs) by introducing a small molecule, 2PACz, into a low-donor content active layer. This strategy improves the fill factor, mitigates charge recombination, strengthens charge extraction, and achieves high AVT and PCE.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Chihyung Lee et al.
Summary: This study demonstrates the enhancement of efficiency and stability in indoor organic photovoltaic (OPV) through morphological modification in non-fullerene blends. The morphological modification improves OPV performance, especially under low-light conditions.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yanan Wei et al.
Summary: The variation of the vertical component distribution has a significant impact on the photovoltaic performance of organic solar cells. This study demonstrates that sequential deposition of materials can improve the efficiency of solar cells.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shitao Guan et al.
Summary: By optimizing the balance between absorption and carrier dynamics, high performance semitransparent organic photovoltaics (ST-OPVs) have been achieved. The devices demonstrate high energy conversion efficiency and visible light transmission, as well as good infrared light reflection capability, making them suitable for practical applications such as solar windows.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Heng Lu et al.
Summary: This study presents a facile strategy to enhance the exciton/charge transport of PM6:Y6-based organic solar cells (OSCs) by using a solid additive, trans-bis(dimesitylboron)stilbene (BBS). The addition of BBS improves the exciton diffusion and charge generation, enhances the crystallization of Y6, and improves the charge-carrier diffusion length. This leads to a higher power conversion efficiency (PCE) of 17.6% in the PM6:Y6:BBS devices compared to the devices without BBS (16.2%).
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Lingling Zhan et al.
Summary: The study demonstrates the potential of using a quaternary strategy to improve the efficiency and practical application of organic photovoltaic (OPV) devices. By optimizing the intermixing-phase size, thick-film and large-area devices are constructed, achieving a high power conversion efficiency (PCE).
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Yan Wang et al.
Summary: This study presents a combined homo hydrocarbon solvent and sequential deposition strategy to improve the fill factor and power conversion efficiency of all-polymer solar cells. The results show that this approach leads to the formation of an ideal film structure and enhances the exciton diffusion dynamics and carrier mobilities, resulting in a higher fill factor. The findings provide a promising strategy for the development and manufacturing of highly efficient and stable all-polymer solar cells.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yanna Sun et al.
Summary: A highly efficient all-small-molecule organic solar cell with a power conversion efficiency of 17.18% is demonstrated through layer-by-layer deposition and solid additive treatment. The controlled morphology allows for ordered molecular stacking and vertical charge transport, resulting in enhanced carrier generation and transport.
Article
Chemistry, Multidisciplinary
Di Wang et al.
Summary: Transparent power windows are developed using a new design of semitransparent organic solar cells, which efficiently utilize solar photons from visible to infrared range for energy generation and saving. These power windows have high color fidelity, outstanding power conversion efficiency, and reject infrared photons. Large-area modules with record-breaking performance have been demonstrated and can contribute to carbon neutrality worldwide.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Li-Yun Su et al.
Summary: In this study, interfacial engineering using an amphiphilic dendritic block copolymer (DBC) and gold nanoparticles (NPs) was demonstrated to enhance the performance and thermal stability of non-fullerene bulk-heterojunction organic photovoltaic devices. The newly developed DBC@AuNPs interlayer improved device efficiency by enabling better energy-level alignment and enhanced interfacial compatibility at the ZnO/BHJ interface, showing great potential for commercialization with a T(80)lifetime of over 1.79 years at room temperature.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Sunan Bao et al.
Summary: Controlling the self-assembly of organic semiconductors to form well-developed nanoscale phase separation is critical for building high-performance organic solar cells. A new approach utilizing the synergistic effect of DTT and CN is developed to tune the morphology of the photoactive layer, leading to a significant increase in power-conversion efficiency and fill factor in ternary OSCs processed with dual additives of CN and DTT.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Moritz Riede et al.
Summary: Organic solar cells have the potential to be the cheapest form of electricity, surpassing silicon photovoltaics. However, challenges remain in increasing efficiency and long-term stability. The technology could be used in building integrated photovoltaics and portable electronics, with the potential to have the lowest carbon footprint of all energy generation technologies.
ADVANCED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Haiyang Chen et al.
Summary: The research team successfully achieved power conversion efficiencies of over 17% in organic solar cells processed from green solvent paraxylene (PX) using a guest-assisted assembly strategy. This approach improved device operational stability and enabled uniform deposition on large-area modules with high efficiency, paving the way for industrial development of organic solar cells.
Article
Chemistry, Physical
Di Wang et al.
Summary: This study developed high-performance spectrally engineered semitransparent organic solar cells using green fabrication methods for greenhouse applications. Empowered by the newly designed quaternary blends, the solar cells achieved excellent power conversion efficiency and maintained good photovoltaic properties during fabrication with non-halogenated solvents to meet the needs of plant photon absorption.
Article
Chemistry, Multidisciplinary
Ling Hong et al.
Summary: Establishing an ideal architecture with selective carrier transport and suppressed recombination is crucial for improving photovoltaic efficiency in organic solar cells (OSCs). By tailoring a hybrid planar/bulk structure, highly efficient OSCs with reduced energy losses were fabricated. The study highlights the potential of precisely regulating the structure of donor:acceptor heterojunction to further enhance the efficiencies of OSCs.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xue Zhang et al.
Summary: The study introduces solid but volatile additives to replace common liquid additives with high boiling points in nonfullerene organic solar cells, showing improved efficiency and operational stability through molecular dynamics simulations. This universal strategy enhances pi-pi stacking among nonfullerene acceptor molecules and demonstrates significant improvements in efficiency and operational lifetime in various OSC systems.
Article
Chemistry, Physical
Xia Xiong et al.
Summary: This study focused on optimizing charge extraction efficiency and charge recombination through interface engineering, resulting in increased efficiencies of two types of organic solar cells.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Physical
Pengqing Bi et al.
Summary: Introducing HDO-4Cl increased the exciton diffusion length in the acceptor phase, reducing non-radiative charge recombination and improving photon utilization efficiency in PBDB-TF: eC9-based OPV cells. This led to achieving a high-efficiency OPV cell with outstanding power conversion efficiency, demonstrating the effectiveness of regulating exciton behaviors in reducing energy loss.
Article
Chemistry, Physical
Yan Wang et al.
Summary: By utilizing the conjugated macrocycle cyanostar, this study successfully modified the active layer and hole transporting layer of organic solar cells, improving device performance and demonstrating the potential of cyanostar in device optimization. Cyanostar dopes PEDOT:PSS and polymer donor, prolonging carrier lifetime, suppressing charge recombination, and enhancing charge transport and extraction efficiency.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Jie Lv et al.
Summary: By introducing an additive-induced miscibility and morphology control strategy, the performance of the PM6:Y6 organic solar cell has been improved to 17.5%, optimizing the photon response of the Y6 phase and enhancing charge extraction and collection efficiency.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Review
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Kenjiro Fukuda et al.
ADVANCED ENERGY MATERIALS
(2020)
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(2011)