Related references
Note: Only part of the references are listed.
Article
Nanoscience & Nanotechnology
Yuanyuan Zhou et al.
Summary: Nonfused-ring electron acceptors have been developed with advantages of simpler synthetic routes, higher molar extinction coefficients, stronger crystallinity, and more orderly stacking. Devices based on DTC-BO-4F show outstanding power conversion efficiencies and low nonradiative voltage losses.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Congqi Li et al.
Summary: The development of nonfused-ring electron acceptors (NREAs) as a promising candidate for organic solar cells (OSCs) is presented in this paper. A novel series of NREAs-II are constructed to explore their impact on device performance, demonstrating their potential for low-cost and high-performance OSCs.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Xiaopeng Xu et al.
Summary: This review provides an overview of the factors affecting the morphology of ternary blend organic solar cells (TB-OSCs) and summarizes the recent progress in morphology studies, including molecular crystallinity, molecular packing orientation, domain size and purity, etc. It also offers prospects for the future development of TB-OSCs.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zewdneh Genene et al.
Summary: The introduction of a flexible conjugation-break spacer (FCBS) into polymer acceptors (P(A)s) enables the achievement of highly efficient and mechanically robust all-polymer solar cells (all-PSCs), improving both photovoltaic performance and mechanical stretchability.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Pengqing Bi et al.
Summary: This study synthesized three wide-bandgap nonfullerene acceptors with nonfused conjugated structures, among which GS-ISO demonstrated superior performance in terms of optical properties. The OPV cell based on GS-ISO showed excellent power conversion efficiency and stability, making it a promising candidate for various photovoltaic applications.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Wuyue Liu et al.
Summary: Semitransparent organic solar cells (ST-OSCs) are important applications of organic solar cells, but the current high-performance ST-OSCs still lack a low enough optical band gap to achieve the optimal balance between power conversion efficiency and average visible transmittance. By designing and synthesizing a new acceptor SN and incorporating it into the PM6:Y6 system, the performance of the solar cells can be significantly improved.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Jinru Cao et al.
Summary: Fluorinated noncovalently fused-ring electron acceptors (NFREAs) are commonly used in high-performing organic solar cells (OSCs) due to their better performance compared to the chemically cheaper chlorinated ones. By modulating central side chains, three novel chlorinated NFREAs were synthesized and one of them, DBT-HD, exhibited better performance in terms of efficient exciton dissociation and charge transport when blended with PBDB-T. This resulted in achieving a champion power conversion efficiency (PCE) and fill factor (FF) for PBDB-T:DBT-HD based devices among the highest values reported in literature for NFREAs based binary OSCs.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Zhenye Li et al.
Summary: This study aimed to boost the thermal stability of PSCs based on Y-series acceptors by polymerizing Y5-F-Br to obtain PFA1. The excellent film stability of PFA1 effectively suppressed thermally induced phase separation, achieving over 98% thermal stability at 100 degrees C for over 1 year. The use of long-chain acceptor for improving thermal stability was also confirmed in other commonly used PSCs, suggesting polymerizing non-fullerene small molecule acceptors is an effective and universal strategy for enhancing PSCs' thermal stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Xueyan Ding et al.
Summary: Unfused acceptors, like the simple fully unfused acceptor 2T2Se-F, have attracted attention for their low cost and simple synthesis. The crystal structure of 2T2Se-F indicates an ordered three-dimensional network, and when blended with the polymeric donor PM6, it achieves impressive power conversion efficiency.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Junhui Miao et al.
Summary: Organic solar cells (OSCs) with organoboron materials show great potential in enhancing device performance, with the ability to tune optoelectronic properties and increase power conversion efficiency (PCE). Although PCEs of 16% and 14% have been achieved with organoboron polymer electron donors and acceptors, there are still opportunities and challenges in further improving OSC device performance using organoboron photovoltaic materials.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Hao Lu et al.
Summary: Three nonfused ring electron acceptors (NFREAs) were purposefully designed and synthesized, with TTC6, TT-C8T, and TT-TC8. The molecular geometry can be adjusted by the steric hindrance of lateral substituents, resulting in improved planarity and intramolecular charge transfer effect. TT-TC8, with its perpendicular phenyl substituents, exhibits good solubility and suppresses over-aggregation. It forms multidirectional regular molecular orientation and closer molecular stacking in the film, leading to the highest power conversion efficiency (PCE) of 13.13% among NFREAs.
SCIENCE CHINA-CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Yahui Liu et al.
Summary: In recent years, organic solar cells (OSCs) have made significant progress with power conversion efficiencies (PCEs) over 18%, showing promising practical applications. Key research focuses in the OSC field include development in material science and interface materials. The article systematically summarizes the recent progress in these areas and discusses current challenges and future developments.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Physical
Zhong Zheng et al.
Summary: A advanced interconnecting layer for tandem organic solar cell is developed in this study. By controlling the O-2 flux during evaporation, efficient electron extraction and low Schottky barrier are obtained, enabling effective charge recombination between two subcells. The tandem cell with the interconnecting layer shows a high efficiency of 20.27%.
Article
Chemistry, Physical
Xuning Zhang et al.
Summary: This study reveals the impact of dielectric properties on the fill factor and photovoltaic efficiency of organic solar cells. By increasing the molecular packing density and dielectric constant, the fill factor and efficiency can be improved.
Article
Energy & Fuels
Yuniu Zhang et al.
Summary: The study utilizes a nonfused ring acceptor to improve the efficiency of semitransparent organic solar cells (STOSCs), leading to a best PCE of 13.19%. By optimizing the proportion of the third component, STOSCs exhibit improved electrical and optical properties, achieving an AVT of 24.56%.
Article
Nanoscience & Nanotechnology
Yan Zhang et al.
Summary: This study designs and synthesizes three nonfused ring electron acceptors. By introducing large steric substituents and electron-withdrawing end-groups, high-efficiency nonfused ring electron acceptors are successfully constructed.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Hao Lu et al.
Summary: The change in diphenylamine position affects the molecular arrangement, with the face-on orientation on the outer side beneficial for perpendicular charge transport, resulting in higher PCE.
CHEMICAL ENGINEERING JOURNAL
(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%.
Review
Materials Science, Multidisciplinary
Jun Yuan et al.
Summary: This Minireview presents a brief history of the design and synthesis of A-DA'D-A type non-fullerene acceptor molecules for organic solar cells (OSCs), with a focus on the progressive design and synthesis of the Y6 molecule in the Yingping Zou group.
ORGANIC ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Bangbang Li et al.
Summary: All-polymer solar cells (all-PSCs) have excellent mechanical robustness and performance stability, but their power conversion efficiency (PCE) still lags behind that of organic solar cells (OSCs) based on non-fullerene small molecule acceptors. In this study, highly efficient all-PSCs were achieved via sequential deposition (SD) with donor and acceptor layers coated sequentially to optimize the film microstructure.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xiaobin Gu et al.
Summary: Novel polymeric acceptors (PBTzO and PBTzO-2F) were designed and synthesized by copolymerization of noncovalently fused ring acceptors, which were employed in all-polymer solar cells for the first time, resulting in improved power conversion efficiency and reduced cost.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Yunhao Cai et al.
Summary: This study demonstrates the fabrication of efficient thick-film organic solar cells by optimizing the structure of the active layer. The use of one polymer donor and two non-fullerene acceptors in the mixed phase enhances the exciton diffusion length, and the layer by layer approach optimizes the vertical phase separation, resulting in high photovoltaic efficiency.
NATURE COMMUNICATIONS
(2022)
Article
Energy & Fuels
Youyu Jiang et al.
Summary: Researchers have developed an alcohol-dispersed PEDOT formulation for efficient and stable organic solar cells. The formulation shows good wetting properties and low acidity, avoiding the drawbacks of aqueous PEDOT:PSS. Organic photovoltaics based on PEDOT:F achieved a power conversion efficiency of 15% and retained 83% of the initial efficiency after 1,330 hours of continuous illumination.
Article
Energy & Fuels
Baoqi Wu et al.
Summary: The development of polymer acceptors is critical for high-efficiency all-polymer solar cells. In this study, two novel polymer acceptors derived from non-fused small molecules were reported for the first time, offering improved device performance due to more ordered polymer packing resulting in more efficient exciton separation and charge transport. This work demonstrates that polymerizing non-fused small molecular acceptors is an effective strategy for developing polymer acceptors for high-performance all-PSCs.
Article
Chemistry, Physical
Jiaxin Zhong et al.
Summary: Nonfused ring electron acceptors (NFREAs) have become a research hotspot in organic solar cells due to their facile synthesis and need to optimize molecular structure for good planarity. Choosing appropriate building blocks and introducing noncovalent interactions can enhance molecular planarity and efficiency. The use of the 2T2C unit and multi-molecular conformational lock strategy can lead to the development of efficient NFREAs.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xiaodong Wang et al.
Summary: In this study, two nonfused ring electron acceptors (NFREAs), BTh-OC8-2F and DTh-OC8-2F, were designed and synthesized. It was found that the DTh-OC8-2F based blend film exhibited better nanoscale phase separation and higher photoconversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Shitong Li et al.
Summary: Although organic solar cells have achieved high power conversion efficiency, their stability is still limited. This study presents a new hybrid electron-transport layer technology that significantly improves the stability and efficiency of organic solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yibin Li et al.
Summary: Non-fullerene acceptors with fused-ring structures have significantly improved the performance of organic solar cells in the recent years, but the complexity of their synthesis and high material costs remain major obstacles for their commercialization. The construction of non-fused ring acceptors (NFRAs) has emerged as a feasible solution due to their easy synthesis and satisfactory device performances. In this article, we highlight the important progress of NFRAs and discuss the crucial relationship between molecular design strategies and device performance, providing potential molecular insights for the future design of high-performance NFRAs.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Polymer Science
Xian-Ming Zhu et al.
Summary: Polymerizing narrow bandgap small molecules to design efficient polymer acceptors for all-polymer solar cells is a promising strategy. In this study, nonfused-core small molecule acceptors were used to design high-performance PSMAs with simple synthetic procedures. These PSMAs showed higher figure-of-merit value compared to their fused-ring counterparts.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Chemistry, Physical
Dou Luo et al.
Summary: This study demonstrates a method to improve the efficiency of organic solar cells (OSCs) by using two tailor-made non-fused ring electron acceptors (NFREAs). By introducing an ambipolar NFREA as the third component, smooth charge transfer routes and additional carrier generation are achieved. The results show that, with similar molecular structure and enhanced molecular packing, the power conversion efficiency of the ternary blend is significantly higher than that of the binary devices.
Review
Chemistry, Multidisciplinary
Jiayu Wang et al.
Summary: Fused-ring electron acceptors (FREAs) with high tunability and excellent properties have revolutionized the field of organic solar cells. FREAs have achieved remarkable efficiencies of over 20% and potential operational lifetimes of up to 10 years.
NATURE REVIEWS CHEMISTRY
(2022)
Article
Chemistry, Physical
Qiuju Jiang et al.
Summary: Reducing the bulkiness of alkyl chain in polymer donors can enhance both efficiency and thermal stability, providing an effective strategy for designing high-performance polymers.
Review
Chemistry, Multidisciplinary
Wenkai Zhong et al.
Summary: This review summarizes the key issue of controlling morphology in organic photovoltaic devices and discusses the morphological features and guiding strategies of different material systems. By controlling the processes of drying and post-treatment, the morphology can be manipulated to promote charge generation and transport.
TRENDS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Qing Shen et al.
Summary: This article comprehensively summarizes the work on non-fused ring electron acceptors (NFREAs) in terms of molecular design and efficiency optimization, material cost, and stability. By addressing the issues of conformational unicity and effective molecular packing, NFREAs can achieve higher efficiencies. In addition, the simplified synthesis routes of NFREAs greatly reduce the complexity and cost of production. Strategies for improving intrinsic material stability, photostability, and thermal stability are also discussed. NFREAs have the potential to drive the development of organic solar cells (OSCs) towards high performance, stability, and low cost.
ACCOUNTS OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Ruijie Ma et al.
Summary: This research focuses on the influence of morphology regulation strategies, such as ternary strategy and cosolvent engineering, on the performance of organic solar cells (OSCs). The addition of BN-T as the third component had different effects on the morphology evolution of different systems. This study provides an insightful understanding of the morphology evolution in ternary OSCs assisted by a high-boiling solvent additive via in situ investigation techniques.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Haojie Li et al.
Summary: This study presents a shear impulse strategy for the preparation of high-performance scalable organic solar cells (OSCs) using green solvents. By increasing the coating speed, the shear impulse during film formation is improved, leading to suitable phase separation. The results demonstrate that this strategy can achieve efficient large-area OSCs.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xiaolei Kong et al.
Summary: The side chain configuration of organic small molecule acceptors (SMAs) has been found to significantly impact their intermolecular interaction and aggregation morphology. In this study, two isomeric A-DA 'D-A type SMAs with thienyl outer side chains were designed and synthesized to investigate the effects of thienyl conjugated outer side chains and the alkyl substitution position on SMA properties. It was found that the beta-substituted m-TEH SMA exhibited stronger intermolecular interaction and higher electron mobility compared to the alpha-substituted o-TEH SMA. Furthermore, the m-TEH blend film with the PBQ6 polymer donor showed more suitable phase separation, enhanced molecular packing, and improved hole and electron mobilities compared to the o-TEH blend film. Organic solar cells based on PBQ6:m-TEH achieved a significantly higher power conversion efficiency (PCE) of 18.51% compared to PBQ6:o-TEH based solar cells. This study demonstrates that m-TEH with 2-ethylhexyl beta-substituted thienyl outer side chains is an excellent high-performance SMA for organic solar cells.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Pei Cheng et al.
Summary: Perylene diimide (PDI) has various advantages and is widely used in organic electronic and photonic devices. PDI-based oligomers and polymers are important in solar cells and field-effect transistors, as they offer unique properties and advantages compared to other materials.
ACCOUNTS OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Wei Liu et al.
Summary: In this study, three A-DA'D-A type acceptors with different branching positions on the pyrrole motif were discussed to investigate the relationship between molecular aggregation, crystalline behavior, and device performance in organic solar cells. It was found that the distance between the branching position and the main backbone affected optical absorption, energy levels, and device performance. Side chain engineering proved to be an effective strategy for tuning molecular aggregation and crystallinity, thereby improving the photovoltaic performance of acceptors in A-DA'D-A type molecules.
Article
Materials Science, Multidisciplinary
Ruijie Ma et al.
Summary: All-polymer solar cells (APSCs) are a promising application-oriented photovoltaic technology that offers operational and mechanical stability. However, their low power conversion efficiency has limited their competitiveness compared to other types of solar cells. In this study, we achieved improved performance of APSCs by enhancing energy transfer, tuning crystallinity, and improving phase separation, leading to faster charge transfer, balanced charge transport, suppressed exciton recombination, and more efficient charge extraction. The study also highlighted the importance of good miscibility between polymer donors in maintaining film morphology and ductility.
Review
Chemistry, Multidisciplinary
Chenyi Yang et al.
Summary: The article discusses the recent advances in organic solar cells (OSCs) based on low-cost polymers, emphasizing the importance of simplifying the chemical structures of polymer donors and modulating energy levels, preaggregation effect, and D/A miscibility for enhancing OSC performance. Challenges in realizing practical application of OSCs are also highlighted, aiming to provide guidance for further research and stimulate new ideas.
Review
Chemistry, Multidisciplinary
Jiayu Wang et al.
Summary: The emerging solar cell technologies, such as organic solar cells (OSCs) and perovskite solar cells (PSCs), are attracting attention due to advantages like easy fabrication, low cost, flexibility, and short energy payback time. The development of fused-ring electron acceptors (FREAs) has led to significant improvements in power conversion efficiencies (PCEs) of OSCs, reaching up to 18%, and has initiated a shift from fullerene-based systems to nonfullerene systems within the field.
ACCOUNTS OF CHEMICAL RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Yuanyuan Zhou et al.
Summary: The rapid development of fused-ring electron acceptors has made them a potential substitute to fullerene-based acceptors in organic solar cells, while nonfused-ring acceptors can significantly reduce synthetic cost and achieve reasonable power conversion efficiencies.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Xingzheng Liu et al.
Summary: In recent years, significant improvements have been made in the power conversion efficiency (PCE) of organic solar cells (OSCs) by exploring new active layer materials, especially high efficiency acceptors. Unfused-ring acceptors (UFAs) have attracted attention for their advantages of simple synthesis and low cost compared to fused-ring acceptors. The synthesis of a new UFA BTzO-4F incorporating benzotriazole moiety and intramolecular noncovalent interactions has led to a record PCE of 13.8% for UFAs, demonstrating the great potential of UFAs for high performance OSCs.
SCIENCE CHINA-CHEMISTRY
(2021)
Review
Chemistry, Physical
Akchheta Karki et al.
Summary: The recent progress highlights how pairing new nonfullerene electron acceptors with suitable high-performing polymer electron donors has significantly improved the power conversion efficiencies of single-junction organic solar cells. Studies on the device photophysics of high performing polymer:NFA blends demonstrate the importance of morphology on efficiency, and further challenges need to be addressed in order to achieve PCEs of over 20% in NFA OSCs.
ADVANCED ENERGY MATERIALS
(2021)
Review
Chemistry, Physical
Ardalan Armin et al.
Summary: Organic solar cells have evolved from relying on fullerenes as acceptors to the emergence of non-fullerene acceptors (NFAs) which have significantly improved cell efficiencies. However, NFAs challenge the traditional understanding of organic solar cell operation, requiring rethinking of morphology, charge generation, and recombination.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Feng Qi et al.
Summary: Novel NFAs were designed with enhanced absorption edge and high J(sc), leading to efficient organic solar cells with improved power conversion efficiency.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Physical
Xiaodong Wang et al.
Summary: NFREAs with increasing pi-conjugation length show enhanced molar extinction coefficient and electron mobility in blend films. The molecular conformation of 2BTh-2F is planar, supported by S···N and S···O intramolecular interactions, and it forms a 3D network packing structure compared to the 2D packing of 2Th-2F. 2BTh-2F:PBDB-T-based organic solar cells achieve a high power conversion efficiency of 14.53%, reaching a record efficiency of 15.44% when D18 is used as the donor polymer.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yuanyuan Zhou et al.
Summary: A series of tetrathiophene-based fully non-fused ring acceptors have been developed for efficient organic solar cells, with the ability to tune solubility and packing through lateral chain size adjustments. Incorporating 2-ethylhexyl chains enhances compatibility with donor polymers and achieves high power conversion efficiencies.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xin Zhang et al.
Summary: NFREAs have simple synthetic routes, high efficiencies, and low costs, but their efficiencies are still far behind those of FREAs. This study designed new NFREAs with precisely tuned electronic properties, charge transport, and energy loss to achieve high-performance solar cell efficiencies.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Tian-Jiao Wen et al.
Summary: Despite recent progress, organic photovoltaics (OPVs) still need to work on balancing efficiency, stability, and cost. This study developed two non-fused electron acceptors which, when blended with a specific polymer, achieved the highest reported efficiency for fully unfused electron acceptors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Chunhui Liu et al.
Summary: Organic solar cells (OSCs) have achieved power conversion efficiencies (PCEs) over 18% through continuous research, demonstrating flexibility for special applications. Flexible OSCs (F-OSCs) have made progress in materials, fabrication techniques, and applications, achieving PCEs over 15% but still facing challenges.
Article
Engineering, Environmental
Jinru Cao et al.
Summary: The study explores the use of unfused acceptors, specifically DBT-4F, in organic solar cells, which show strong near-infrared absorption and narrow optical band gaps leading to high efficiency. The blends of DBT-4F with PBDB-T exhibit champion power conversion efficiency due to better miscibility, making it one of the highest values reported for unfused acceptor based binary OSCs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Shounuan Ye et al.
Summary: Fused-ring electron acceptors have shown the best photovoltaic performances, and developing simple non-fullerene acceptors can reduce synthetic costs. In this study, four simple non-fullerene acceptors were synthesized with the same conjugated backbone but different halogen atoms and alkyl side chains. Among them, the QCIC3-based blended film exhibited the strongest pi-pi stacking and suitable phase-separation domains, resulting in the highest power conversion efficiency for organic solar cells. This work provides insights for optimizing molecular arrangements and enhancing the photovoltaic properties of simple electron acceptors through subtle chemical modifications.
Editorial Material
Multidisciplinary Sciences
Qunping Fan et al.
Article
Chemistry, Physical
Wenyan Yang et al.
Summary: The research found that as the thickness of the active layer of organic solar cells decreases, the thermal stability gradually increases, leading to the development of a new industrial index, i-FOM2.0, which helps address the balance between efficiency, stability, and cost, and accelerates the commercialization of OSCs.
Article
Energy & Fuels
Xin Zhang et al.
Summary: Isomeric effects were systematically studied on unfused-ring electron acceptors, leading to the discovery of the PBDB-T:NOF-3 based device with higher power conversion efficiency and stable performance. These findings suggest that isomeric effects play a crucial role in designing high-performance UREAs.
Article
Chemistry, Physical
Li Zhang et al.
Summary: The study focused on the development and characterization of two newly synthesized brominated SMAs, F8IDT-Br and C8IDT-Br, which showed excellent performance and stability in organic solar cells. The results demonstrate that bromination of non-fused SMAs can further improve relevant device performance, indicating the potential for these materials in enhancing efficiency of OSCs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Xiaodong Wang et al.
Summary: Four simple nonfused ring electron acceptors were designed and synthesized, with CH3-2F showing the highest power conversion efficiency. The substituent group at the diphenylamine unit has a significant impact on the absorption and energy level of acceptors, electron mobility, and morphology of blend films. The use of diphenylamine derivatives as the flanking group can improve solubility, avoid oversized aggregates, and enhance intramolecular charge-transfer effects.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Jun Zhao et al.
Summary: Two novel nonfused-ring electron acceptors (N-FREAs), DTP-out-F and DTP-in-F, containing a 2,5-difluorophenylene core with DTP blocks and IC-2F terminals, were designed and synthesized. The isomerization of DTP to 2,5-difluorophenylene affected the overall properties of the N-FREAs, leading to improved power conversion efficiency. The isomerization strategy shows great potential in developing high-performance N-FREAs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Jinfeng Huang et al.
Summary: The study introduces two new quinoxaline-based NCAs, QOC6-4H and QOC6-4Cl, with the latter showing improved optical absorption, carrier mobilities, and charge recombination suppression. The device based on PBDB-T:QOC6-4Cl achieved a notable power conversion efficiency and higher short-current density, demonstrating that chlorination of end groups is an effective strategy to enhance intermolecular interactions and photovoltaic performance of NCAs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Huiliang Sun et al.
Summary: The study successfully improved the efficiency of all-polymer solar cells by synthesizing narrow-bandgap polymer acceptors with regular structures. By introducing a ternary system with different components, further optimization of blend morphology and charge transport was achieved, leading to an enhanced power conversion efficiency.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yong Cui et al.
Summary: By combining material design and ternary blending strategy, a maximum power conversion efficiency of 19.0% is achieved in single-junction OPV cells. Optimized active layer structure significantly improves the photovoltaic parameters, enhancing the performance and PCE values of the cells.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xin Zhang et al.
Summary: Side-chain engineering is an effective strategy for regulating solubility and packing behavior of organic materials. The introduction of terminal side-chains in a new noncovalently fused-ring electron acceptor has shown to enhance molecular rigidity and intermolecular pi-pi stacking, resulting in record power conversion efficiency for organic solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Yuxiang Li et al.
Summary: This study successfully optimized the film structure of polymer solar cells by systematically adjusting the molecular aggregation patterns of unfused non-fullerene acceptors (UF-NFAs), leading to improved efficiency of the photovoltaic devices.
Article
Multidisciplinary Sciences
Lijiao Ma et al.
Summary: Non-fullerene acceptors based on non-fused conjugated structures have potential for low-cost organic photovoltaic cells, but their efficiencies are lower than those of fused-ring NFAs. A new bithiophene-based non-fused core, TT-Pi, was designed, leading to the development of a completely non-fused NFA, A4T-16, which achieved a high PCE of 15.2% with 84% retention after 1300 hours under simulated AM 1.5 G illumination. This work provides insight into molecule design of non-fused NFAs through molecular geometry control.
NATURE COMMUNICATIONS
(2021)
Article
Energy & Fuels
Xian-Kai Chen et al.
Summary: Researchers provide a general description of non-radiative voltage losses and find that the latest organic solar cells based on non-fullerene acceptors can reduce this loss. The study shows that photoluminescence yield is a critical factor in determining the lower limit of non-radiative voltage losses.
Review
Chemistry, Multidisciplinary
Long Ye et al.
Summary: In the past decade, there have been significant advancements in the power conversion efficiency of organic photovoltaic cells, with polythiophenes showing great promise. Optimizing the structure and performance of polythiophenes in solar cells can drive progress in cost-effective electronics.
TRENDS IN CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jiayu Wang et al.
Summary: A new fused-ring electron acceptor FNIC3 with controlled aggregation behavior was synthesized, showing strong absorption in the 600-900 nm range. The aggregation of FNIC3 significantly influences the photovoltaic device parameters, with appropriate aggregation enhancing the power conversion efficiency. Aggregates formed under proper film formation time exhibit a higher PCE compared to those formed under short or long film formation time.
Review
Chemistry, Multidisciplinary
Chaohua Cui et al.
Summary: Organic solar cells have unique advantages of light weight and low cost, with the morphology of the active layer being crucial for performance. Postdeposition treatments and additive treatments are effective in optimizing the morphology, leading to improved performance in organic photovoltaic applications.
Review
Energy & Fuels
Mingqun Yang et al.
Summary: Organic solar cells (OSCs) have seen rapid advancements in power conversion efficiencies with the emergence of non-fused ring acceptors (NFRAs) as potential replacements for the complex and costly multiple fused ring acceptors (NFAs). Challenges and future directions are discussed to achieve high performance and low synthetic complexity simultaneously in the development of new NFRAs for practical application in OSCs.
Article
Chemistry, Physical
Dou Luo et al.
Summary: This study demonstrates the use of electron-deficient diketone units in efficient non-fused ring electron acceptors for high-performance organic solar cells. By choosing appropriate building blocks, stronger molecular stacking can be achieved leading to improved device performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Multidisciplinary
Lei Zhu et al.
Summary: The article reviews the importance of non-fullerene acceptors (NFAs) in organic solar cells (OSCs) and the key steps and influencing factors for morphology optimization. It examines the morphological characteristics and recent research progress of pi-conjugated molecular systems based on IDT and Y6, as well as n-type pi-conjugated polymers, with special attention to high-performance Y6-based NFAs. The article aims to provide useful information and guidance for morphology optimization and achieving higher efficiency devices.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Fuqiang Du et al.
Summary: The article discusses the importance of side-chain engineering on nonfullerene acceptors (NFAs) for optimizing their solubility and crystallinity in order to achieve high-performance organic solar cells (OSCs). The use of 7H-dibenzo[c,g]carbazole (DCB) as an electron-donating core in designing unfused-ring acceptors (UFAs) with low weight ratios of side chains is highlighted. The resulting DCB-4F material exhibits higher solubility and promising efficiency in OSCs when compared to traditional analogues, showing potential for achieving highly efficient as-cast OSCs.
MATERIALS HORIZONS
(2021)
Article
Chemistry, Physical
Zhuhao Wu et al.
Summary: The development of nonfullerene acceptors has greatly improved the power conversion efficiencies of polymer solar cells in the past years, with a focus on synthetic accessibility without organostannanes for commercial applications. This study successfully synthesized two high-efficiency simple small molecular nonfullerene acceptors through a ligand-free direct heteroarylation approach, demonstrating their similar optical properties and energy levels. The nonfullerene acceptor BDDEH-4F with 2-ethylhexyl side chains achieved a higher PCE and larger Jsc compared to BDDBO-4F, showcasing the promise of facile direct heteroarylation for cost-effective nonfullerene solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Nanoscience & Nanotechnology
Shiyu Feng et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Nanoscience & Nanotechnology
Shuting Pang et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Nanoscience & Nanotechnology
Chengliang He et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Huiliang Sun et al.
Article
Energy & Fuels
Ruizhi Lv et al.
Article
Nanoscience & Nanotechnology
Ran Hou et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Ya-Nan Chen et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Huiliang Sun et al.
SCIENCE CHINA-CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Tengfei Li et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Physical
Yunzhi Wang et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
Shuixing Li et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Multidisciplinary Sciences
Xiaojun Li et al.
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Jaewon Lee et al.
ACS ENERGY LETTERS
(2019)
Review
Chemistry, Multidisciplinary
Viktor V. Brus et al.
ADVANCED MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Jie Zhou et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Polymer Science
Shi-Zhe Geng et al.
CHINESE JOURNAL OF POLYMER SCIENCE
(2019)
Article
Multidisciplinary Sciences
Hao Huang et al.
NATURE COMMUNICATIONS
(2019)
Article
Multidisciplinary Sciences
Zhi-Peng Yu et al.
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Yuan-Qiu-Qiang Yi et al.
CHEMISTRY OF MATERIALS
(2019)
Article
Chemistry, Physical
Zhang Zhongqiang et al.
ACTA PHYSICO-CHIMICA SINICA
(2019)
Article
Chemistry, Physical
Jun Yuan et al.
Review
Chemistry, Physical
Jianhui Hou et al.
Review
Optics
Pei Cheng et al.
Article
Chemistry, Physical
Xueliang Shi et al.
ADVANCED ENERGY MATERIALS
(2018)
Article
Chemistry, Physical
Shuixing Li et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2018)
Review
Energy & Fuels
Jianquan Zhang et al.
Review
Nanoscience & Nanotechnology
Cenqi Yan et al.
NATURE REVIEWS MATERIALS
(2018)
Article
Chemistry, Physical
Yuzhong Chen et al.
ADVANCED ENERGY MATERIALS
(2018)
Article
Chemistry, Multidisciplinary
Ning Wang et al.
MATERIALS CHEMISTRY FRONTIERS
(2018)
Article
Chemistry, Multidisciplinary
Shuixing Li et al.
ADVANCED MATERIALS
(2018)
Article
Chemistry, Multidisciplinary
Ailing Tang et al.
ADVANCED MATERIALS
(2017)
Article
Chemistry, Multidisciplinary
Shuixing Dai et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Article
Chemistry, Multidisciplinary
Bin Kan et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Review
Nanoscience & Nanotechnology
Gang Li et al.
NATURE REVIEWS MATERIALS
(2017)
Article
Chemistry, Multidisciplinary
Zhi-Guo Zhang et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2017)
Review
Chemistry, Multidisciplinary
Jiayu Wang et al.
Article
Chemistry, Multidisciplinary
Yuze Lin et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2016)
Article
Chemistry, Multidisciplinary
Yuze Lin et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2016)
Review
Materials Science, Multidisciplinary
Riccardo Po et al.
JOURNAL OF MATERIALS CHEMISTRY C
(2016)
Article
Chemistry, Multidisciplinary
Maojie Zhang et al.
ADVANCED MATERIALS
(2015)
Article
Chemistry, Multidisciplinary
Yuze Lin et al.
ADVANCED MATERIALS
(2015)
Article
Polymer Science
Riccardo Po et al.
Article
Multidisciplinary Sciences
Taesu Kim et al.
NATURE COMMUNICATIONS
(2015)
Article
Multidisciplinary Sciences
Yuhang Liu et al.
NATURE COMMUNICATIONS
(2014)
Article
Polymer Science
Deping Qian et al.
