Related references
Note: Only part of the references are listed.
Article
Chemistry, Multidisciplinary
Ying-Han Zhao et al.
Summary: In this study, high-performance n-type semiconducting polymers were conveniently synthesized using a dual-acceptor strategy and C-H direct arylation polymerization. The properties of these polymers, including optical, electrochemical, and charge transporting properties, were comprehensively studied. Among them, PNDI-BT exhibited the highest electron mobility of up to 0.6 cm(2) V-1 s(-1) in unipolar n-type organic transistors. This study demonstrates the usefulness of this synthetic protocol for the sustainable synthesis of high-performance n-type semiconducting polymers.
SCIENCE CHINA-CHEMISTRY
(2023)
Review
Chemistry, Physical
Lijiao Ma et al.
Summary: Great progress has been made in the power conversion efficiencies (PCEs) of organic photovoltaics (OPVs) by using non-fullerene acceptors (NFAs). In order to further improve device performance, it is important to understand the design strategies, packing information, and intermolecular interactions of NFAs at the atomic level. This review highlights recent advances in the study of single crystal structures of NFAs in OPVs, as well as the relationship between molecular design strategies, packing arrangement, and their corresponding properties. The challenges and future development of new electron acceptors with ideal single crystal structures and packing modes for next-generation organic photovoltaics are also discussed.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Cong Xiao et al.
Summary: The effects of hybrid cycloalkyl-alkyl side chains on the single-crystal structures, optoelectronic and energetic properties of electron acceptors were investigated. Symmetric/asymmetric acceptors with 10-cyclohexyldecyl side chains were designed, synthesized, and compared. The introduction of the cyclohexyldecyl side chains resulted in decreased optical bandgap, deeper energy level, and closer packing of acceptor molecules, leading to improved performance of organic solar cells.
Article
Chemistry, Physical
Guojing Xie et al.
Summary: This study extracted the stacked structures of the archetype fused-ring electron acceptor molecule, ITIC, based on four polymorphic crystals. The relationship between molecular stacking modes and exciton migration/charge transport properties was investigated using intermolecular Coulomb coupling and charge transfer integral calculation. The thin film texture was experimentally crystallized through a post-annealing treatment, leading to enhanced exciton migration through exciton-exciton annihilation.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Tao Shen et al.
Summary: In this study, a hybrid acceptor-modulation strategy based on a fluorinated triple-acceptor architecture was used to address the issue of low electron mobility in unipolar n-type organic transistors. The resulting polymers demonstrate high electron mobility and open up a new path towards high-performance unipolar n-type semiconducting polymers.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mingwei Zhou et al.
Summary: In this study, a new method of using conjugated polymers as additives to optimize the morphology of layer-by-layer organic solar cells (LbL-OSCs) is reported. By optimizing the morphology through side chain engineering, the addition of P-Cl as an additive facilitates the penetration of BTP-eC9 and forms an intertwined D/A network, leading to improved charge separation and collection efficiency. The optimized morphology significantly contributes to the photovoltaic performances of LbL-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
Kaien Chong et al.
Summary: This work demonstrates highly efficient polymer solar cells by improving charge extraction and suppressing charge recombination through side-chain engineering, adopting ternary blends, and introducing volatilizable solid additives. The optimized molecular structure and blend morphology lead to improved fill factor and power conversion efficiency.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Yongqiang Shi et al.
Summary: The study focused on the design and synthesis of two isomeric polymers with subtle differences in backbone and linking positions, leading to distinct physicochemical properties and device performances. It demonstrated that isomerization of acceptors effectively addresses the steric hindrance issue of AA type polymers, ultimately maximizing the device performance of OTFTs.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Feng Qi et al.
Summary: The development of non-fullerene acceptors (NFAs) based on benzotriazole has shown promise in enhancing short-circuit current density (J(sc)) and efficiency of organic solar cells. By analyzing the molecular packing of NFAs through X-ray crystallography, a better understanding of the correlation between molecular structure and solar cell performance can be achieved.OSC based on specific NFAs showed efficient photon-to-current conversions, achieving high power conversion efficiency.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Multidisciplinary
Edgar Gutierrez-Fernandez et al.
Summary: The study demonstrates that using the commonly used nonfullerene acceptor BTP-4F can achieve organic thin-film transistors with high electron mobility, opening up new possibilities in the field of organic electronics. Efficient charge transport is linked to highly ordered crystalline structure, providing a new approach for exploring high mu(e) organic materials.
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
Engineering, Environmental
Yuzhong Chen et al.
Summary: In recent years, Y-series non-fullerene acceptors have gained extensive attention in the field of organic solar cells. This study synthesized and compared three Y-series acceptors with different side chains. The results showed that different chalcogen-heterocycle substitutions led to changes in the opto-electronic properties and molecular packing of the acceptors. Among them, the solar cells based on BTP-Th showed the best performance due to its higher energy levels and suitable blend-film morphology.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Kui Jiang et al.
Summary: Researchers have discovered that using donor and acceptor materials with intrinsically weaker exciton binding strengths in sequentially processed planar-mixed heterojunction devices can alleviate photocurrent loss caused by triplet states and achieve higher power conversion efficiencies.
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
Yuzhong Chen et al.
Summary: The study introduces a novel asymmetric NFA, Y6-1OBO, which achieved higher efficiency with specific solvent additives. The systematic investigation on solvent additives revealed their significant impact on film morphology. The work emphasizes the importance of solvent additive selection based on material properties for future optimization of OSCs.
CHEMISTRY OF MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Qiao He et al.
Summary: The emergence of Y-series nonfullerene acceptors (NFAs) has led to significant efficiency improvements in single-junction organic solar cells (OSCs), with power conversion efficiencies (PCEs) surpassing 19%. Structural modifications to the Y6 acceptor and the design of various Y-series NFAs have contributed to improved photovoltaic performance. This review provides insights into the design principles and strategies for high-performance Y-series NFAs, offering valuable guidance for future innovations.
Article
Materials Science, Multidisciplinary
Yiwei Fu et al.
Summary: Chemical design and physical control of the molecular aggregation of organic semiconductors have been shown to be effective strategies for preparing high-performance organic solar cells. In this study, two non-fullerene acceptors (NFAs) with different alkyl chain lengths were synthesized and their molecular dynamics and experimental characterizations were analyzed. It was found that the formation of a three-dimensional honeycomb network in NFAs with moderate alkyl chain length was beneficial for charge transport, while a two-dimensional honeycomb network formed in NFAs with long alkyl chains. The addition of a solvent additive further promoted intermolecular interactions between NFAs. The combination of a three-dimensional network and an appropriate domain size resulted in promising power conversion efficiency in thin and thick binary OSCs. This work provides insights into the interaction between NFAs and solvent additives and offers guidance for the design and regulation of NFA-based OSCs.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zhenghui Luo et al.
Summary: This research investigates the impact of side chain modification on the efficiency of organic solar cells. The study demonstrates that asymmetric side-chain substitution enhances π-π stacking and increases electronic couplings, thereby promoting photovoltaic efficiency through improved charge mobility and molecular packing.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Review
Chemistry, Physical
Pachaiyappan Murugan et al.
Summary: This review examines the structure-property relationships of a library of Y-series non-fullerene acceptors (NFAs) and their current advances in organic solar cell (OSC) applications. It focuses on the understanding gained through systematic chemical modification and discusses the impact of various processing techniques on the efficiency of Y-series NFAs. The review also outlines the challenges and future directions in the field of OSCs.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Tao Shen et al.
Summary: This study presents an all-C-H-activation strategy for the efficient synthesis of high-performance ambipolar polymers, which can be applied in flexible organic transistors with high and balanced hole and electron mobilities. The controlled molecular weight can be realized by varying the polymerization time, offering a general strategy for the rapid synthesis of semiconducting polymers.
Article
Chemistry, Physical
Yuzhong Chen et al.
Summary: The paper presents a strategy of asymmetric alkyl and alkoxy substitution on Y-series nonfullerene acceptors, achieving great performance in organic solar cell devices. Asymmetric substitution on Y6 results in a molecule that maintains V-oc improvement and good solubility, enabling highly efficient nonfullerene OSCs. This asymmetric side-chain strategy shows potential for improving the performance of other NFA-material systems.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Yuan Chang et al.
Summary: This study systematically investigated the steric and electronic effects of three structurally similar non-fullerene acceptors on the blend morphology and device performance. By incorporating non-fullerene acceptors with better molecular packing into the PTQ10 donor polymer, a novel ternary strategy was explored, resulting in enhanced photon response, improved charge transport, and suppressed charge recombination, ultimately achieving an outstanding power conversion efficiency of 17.6% with a fill factor of 78.8% in the ternary device.
ADVANCED ENERGY MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Xuena Li et al.
Summary: This article summarizes the recent advances in the performance of crescent-shaped Y6 and its derivatives in solar cells, focusing on crystal structure, electronic structure, and device performance. Through molecular engineering, theoretical modeling, and experimental testing, the potential applications and future developments of these non-fullerene acceptors in organic semiconductor design and mechanistic studies are explored.
Article
Chemistry, Physical
Jianquan Zhang et al.
Summary: Side-chain modifications of NFAs play a crucial role in enhancing the performance of OSCs. By introducing bulkier alkyl chains branched at specific positions, it is possible to alter molecular packing, improve open-circuit voltage, and achieve better device performance. The side-chain branching design of NFAs shows great potential in optimizing molecular properties and promoting photovoltaic performance.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Guoping Li et al.
Summary: The study found that combining the π-extension and halogenation strategies of end-capping groups (EG) in organic solar cells significantly impacts optical absorption, leading to an increase in power conversion efficiency (PCE).
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Yuzhong Chen et al.
Summary: Chemical modifications of non-fullerene acceptors have been shown to improve the efficiency of organic solar cells. By introducing chlorination and inner side-chain engineering, a higher power conversion efficiency was achieved. Furthermore, the impact of asymmetric alkoxy substitution on the outer side chains was studied, highlighting the importance of achieving a balance between open-circuit voltage and short-circuit current density.
ADVANCED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Chao Li et al.
Summary: The molecular design of acceptor and donor molecules has significantly advanced organic photovoltaics. By introducing branched alkyl chains in non-fullerene acceptors, favorable morphology in the active layer can be achieved, leading to a certified device efficiency of 17.9%. This modification can completely alter the molecular packing behavior of non-fullerene acceptors, resulting in improved structural order and charge transport in thin films.
Article
Chemistry, Physical
Yuzhong Chen et al.
Summary: In this work, the effects of alkoxy-substitution on two well-known non-fullerene acceptors, IDT-series and Y-series acceptors, were investigated. The resulting molecules, IDTN-O and Y6-O, exhibited altered properties compared to the original acceptors, resulting in improved device performance. The alkoxy substitution led to enhanced open-circuit voltage and better blend morphology, ultimately optimizing the performance of the devices based on IDTN and Y6.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Yong Cui et al.
ADVANCED MATERIALS
(2020)
Article
Chemistry, Physical
Lei Zhu et al.
ADVANCED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
Shuixing Li et al.
ACS ENERGY LETTERS
(2020)
Review
Chemistry, Multidisciplinary
Qingya Wei et al.
SCIENCE CHINA-CHEMISTRY
(2020)
Article
Multidisciplinary Sciences
Guichuan Zhang et al.
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Francis Lin et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Jun Yuan et al.
Review
Chemistry, Multidisciplinary
Jiajun Zhao et al.
MATERIALS CHEMISTRY FRONTIERS
(2020)
Article
Chemistry, Physical
Donghui Li et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Materials Science, Multidisciplinary
Chengyi Xiao et al.
JOURNAL OF MATERIALS CHEMISTRY C
(2020)
Article
Nanoscience & Nanotechnology
Helen Bristow et al.
ADVANCED ELECTRONIC MATERIALS
(2019)
Article
Chemistry, Physical
Jun Yuan et al.
Review
Chemistry, Multidisciplinary
Chengliang Wang et al.
CHEMICAL SOCIETY REVIEWS
(2018)
Article
Multidisciplinary Sciences
Yanjun Shi et al.
NATURE COMMUNICATIONS
(2018)
Article
Materials Science, Multidisciplinary
Yang Wang et al.
JOURNAL OF MATERIALS CHEMISTRY C
(2018)
Article
Chemistry, Physical
Yuzhong Chen et al.
ADVANCED ENERGY MATERIALS
(2018)
Article
Chemistry, Physical
Stefan Grimme et al.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2017)
Article
Chemistry, Multidisciplinary
Peter Mueller-Buschbaum
ADVANCED MATERIALS
(2014)
Article
Chemistry, Multidisciplinary
Tian Lu et al.
JOURNAL OF COMPUTATIONAL CHEMISTRY
(2012)
Review
Chemistry, Multidisciplinary
Veaceslav Coropceanu et al.
Review
Chemistry, Physical
J Veres et al.
CHEMISTRY OF MATERIALS
(2004)
