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Article
Nanoscience & Nanotechnology
Hao Guan et al.
Summary: Additive strategies are crucial for improving the performance of organic solar cells (OSCs). This study focuses on the application of a solid additive, BTA3, in PM6:BTP-eC9-based OSCs, resulting in a high energy conversion efficiency of 18.65%. BTA3 improves compatibility with the acceptor component, optimizes film morphology, promotes exciton dissociation and charge transfer, and suppresses charge recombination.
ACS APPLIED MATERIALS & INTERFACES
(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
Qunping Fan et al.
Summary: By combining selenophene-fused core with naphthalene-containing end-group, a near-infrared (NIR)-absorbing small-molecule acceptor (SMA) Y-SeNF is developed and incorporated into a binary PM6:L8-BO host system, resulting in improved charge-transporting and suppressed non-radiative energy loss in ternary polymer solar cells (PSCs). The ternary PSCs achieve an impressive device efficiency of 19.28% with high photovoltage and photocurrent, and exhibit excellent stability under maximum-power-point tracking for over 200 hours. This study provides a novel strategy for efficient and stable PSCs towards practical applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hu Chen et al.
Summary: A nonfullerene acceptor isoIDITC with fibril-like morphology is utilized as a third component in organic photovoltaic devices, achieving a power conversion efficiency of 19%. The ternary blend shows an alloy model and a well-defined fibril-like network, enhancing crystallization and improving carrier mobility and lifetime compared to binary devices. The use of isoIDITC suppresses demixing and increases T80 lifetime, making it an important component for high-performance and stable ternary OPVs.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Xingpeng Liu et al.
Summary: A ternary strategy of halogen-free solvent processing can effectively improve the power conversion efficiency of polymer solar cells (PSCs) by introducing an appropriate third component. In this study, the green solvent o-xylene (o-XY) was used as the main solvent, and the non-fullerene acceptor Y6-DT-4F was introduced into the binary system to broaden spectral absorption and optimize morphology, achieving efficient PSCs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Dan He et al.
Summary: This review summarizes the recent studies and achievements on the non-radiative recombination energy loss (Delta E-3) in non-fullerene acceptor-based organic solar cells (OSCs). By exploring material design, morphology manipulation, ternary strategy, mechanism, and theoretical study, it is hoped to further reduce energy loss and enhance the power conversion efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Hongtao Wang et al.
Summary: High-performance ternary semitransparent organic solar cells (ST-OSCs) are achieved by incorporating low structure order DCB-4F into PM6:DTPSe-4Cl host blend. The addition of DCB-4F enhances molecular arrangement for enhanced charge transport in active layers, leading to outstanding power conversion efficiencies of 15.93% and 12.58% for corresponding opaque and semitransparent ternary OSCs.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Miao Li et al.
Summary: Nonfused ring acceptors, with their simple structure and low synthetic costs, have great potential for future commercial applications of organic solar cells. In this study, an asymmetrical nonfused ring acceptor, FO-N, was designed and introduced into a binary system to fabricate high-efficiency ternary solar cells. The introduction of FO-N improved the compatibility of the ternary system and led to improved photovoltaic performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Yang Zhang et al.
Summary: The research successfully incorporated 6-aminocaproic acid into sol-gel-derived zinc oxide to form 6-ACA-ZnO, which can be used as a cathodic interface layer in polymer solar cells, effectively improving their performance. The 6-ACA-ZnO demonstrated enhanced electron extraction efficiency and reduced carrier recombination loss, leading to a higher power conversion efficiency compared to devices using pristine ZnO.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yujun Cheng et al.
Summary: In this research, a new concept of oligomer-assisted photoactive layers for ternary organic solar cells (OSCs) is proposed. The addition of oligomers substantially enhances the performance and stability of the cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Bing-Huang Jiang et al.
Summary: This study investigates the optoelectronic properties of ternary organic photovoltaics by embedding the conjugated polymer PTO2 as the third component in PM6:Y6 and PM6:BTP-eC9 blends. The results show that PTO2 improves the light harvesting, blend morphologies, and energy losses of the devices, resulting in high power conversion efficiencies. Furthermore, the embedding of PTO2 enhances the long-term stability of the devices under different environmental conditions.
CHEMICAL ENGINEERING JOURNAL
(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)
Review
Chemistry, Physical
Nutifafa Y. Doumon et al.
Summary: Incorporating a third element in the active layer of organic photovoltaic devices is a promising strategy to improve efficiency and stability. The research on ternary organic solar cells (TOSCs) has experienced significant growth, especially after the breakthrough efficiency in 2017. This review discusses the role of the third component in improving efficiency and stability, and compares the performance of TOSCs to colloidal quantum dot solar cells (CQDSCs).
Article
Chemistry, Multidisciplinary
Guilong Cai et al.
Summary: Two new fused-ring electron acceptor isomers were designed and synthesized, showing distinct electron reorganization energies and molecular packing motifs due to their nonlinear and linear molecular conformations. The linear isomer exhibited more ordered packing and higher crystallinity, leading to improved charge transport and higher efficiency when incorporated into binary or ternary systems.
Article
Chemistry, Physical
Lingling Zhan et al.
Summary: By constructing ternary organic photovoltaics, the open-circuit voltage (V-oc) loss is reduced, leading to a higher voltage without sacrificing the absorbing range. In addition, the ternary blend exhibits enhanced charge transport property and a higher fill factor.
Article
Chemistry, Multidisciplinary
Taeyoon Ki et al.
Summary: This study demonstrates a novel strategy of eliminating problematic organic metal-binding ligands in TMO precursors through an anion-induced catalytic reaction (ACR) at room temperature, promoting the formation of a metal-oxygen network. The ACR-derived TMO thin film on top of a photoactive layer shows excellent electrical conductivity and work function tunability, leading to higher efficiency and longer stability in inverted device configurations.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Wei Gao et al.
Summary: By adopting the asymmetric selenium substitution strategy and using a pseudosymmetric electron acceptor, the power conversion efficiency of planar-mixed heterojunction organic solar cells (PMHJ OSCs) can be significantly improved. The increased dielectric constant and improved dimer packing lead to lower exciton binding energy, more efficient exciton dissociation, and reduced radiative recombination loss. These findings provide an effective way to develop highly efficient acceptor materials for OSCs.
ADVANCED MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Huifeng Yao et al.
Summary: Single-junction organic solar cells (OSCs) have achieved significant progress with power conversion efficiencies over 19%, thanks to innovations in material design and device optimization. This Minireview discusses molecular design strategies to improve absorption spectrum, energy level, and intermolecular aggregation in OSCs, as well as the role of molecular electrostatic potential in reducing energy loss. The review also introduces the latest advances in four types of OSCs composed of different donor:acceptor combinations, but practical challenges such as material cost, stability, and multi-function integration still need to be addressed.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Xianyi Meng et al.
Summary: Manipulating the backbone of SMAs is crucial for developing efficient OSCs. We report a 4-arm acceptor, 4A-DFIC, unexpectedly generated in a reaction. 4A-DFIC exhibits rigid and twisted molecular plane and effective molecular stacking. It shows a low band gap and excellent light-harvesting capability. OSCs based on 4A-DFIC achieved the highest power conversion efficiencies to date for multi-arm SMA-based OSCs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Tobias Fritsch et al.
Summary: The interplay between free charge carriers, charge transfer (CT) states, and singlet excitons (S-1) determines the performance of organic solar cells. In the blend, the polymer exciton dominates the radiative properties, while the non-radiative decay limits the open circuit voltage. Increasing the strength of the exciton in the optical spectra can reduce non-radiative voltage losses, not because it is more emissive. Electronic coupling between the CT state and the S-1 does not improve the open circuit voltage.
ADVANCED ENERGY MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Min Hun Jee et al.
Summary: Sequential layer-by-layer organic solar cells have attracted attention due to their potential for high power conversion efficiencies and their ability to optimize structure and performance. The longer exciton diffusion length of nonfullerene acceptors provides a new direction for improving the performance of these solar cells. However, challenges remain in large-scale production and device stability.
Article
Chemistry, Physical
Xue Lai et al.
Summary: Quasiplanar heterojunction organic solar cells, with efficient exciton dissociation and charge transfer, have gained attention. In this study, a co-acceptor-based Q-PHJ OSC with enhanced crystallinity was achieved using two compatible acceptors. The co-Q-PHJ device exhibited improved thermal stability and efficiency.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Hai-Rui Bai et al.
Summary: In this study, a family of polymer donors for organic solar cells (OSCs) was synthesized using a ternary copolymerization approach. The terpolymer D18-20%Cl, with an appropriate proportion of chlorinated monomer, demonstrated the best performance with improved morphology and charge transport when blended with Y6. This resulted in a top-ranked power conversion efficiency (PCE) of 18.28% for D18-20%Cl:Y6-based OSCs, the highest reported PCE for terpolymer-based binary OSCs.
ACS ENERGY LETTERS
(2022)
Article
Engineering, Environmental
Xuyu Gao et al.
Summary: Here, a simple fluorescent material TPA2O is introduced into both polymer:nonfullerene and polymer:fullerene blends to construct ternary organic solar cells. The addition of TPA2O significantly improves the power conversion efficiency and photocurrent in nonfullerene systems, while reduced efficiency is found in fullerene systems. The study also reveals the influence of TPA2O on the morphology of the devices and the enhanced thermal stability in nonfullerene devices.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yu-Che Lin et al.
Summary: Binary acceptor alloys based on A''-D'A'D'-A'' small-molecule acceptors were synthesized and blended with polymer PM6 to form ternary blends for organic photovoltaics (OPVs). By varying the ratio of the two acceptors, the ternary blend with one major (BTPO-NF) and one minor (BTPO-F) acceptor component showed the highest device performance. The enhanced photocurrent attributed to the optimized active layer morphology induced by the alloy acceptor structures contributed to the increased power conversion efficiency (PCE) of the ternary-blend device.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Ji Wan et al.
Summary: In this study, a medium bandgap acceptor TPIIC was introduced into PM6:Y6 host devices, and an effective method to reduce energy loss and improve stability in ternary devices was discovered.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Kang-Ning Zhang et al.
Summary: In this study, the enhancement of exciton migration behaviors in PM6:IT4F:PC71BM and PM6:BTP-4Cl:PC71BM ternary devices was achieved by simultaneously improving efficiency and thermal stability. The coexistence of dual Forster-type energy transfer and the addition of PC71BM contributed to the directed exciton diffusion and stabilized the energy donors, leading to more favorable multi-length scale morphologies.
Article
Chemistry, Applied
Zhenying Su et al.
Summary: Adding 5 wt% ITIC to the PM6:Y6 binary system successfully achieved a PCE of 16.6% for the PM6:Y6:ITIC ternary OSC, compared to 15.5% and 9.2% for the PM6:Y6 and PM6:ITIC binary OSCs. The enhanced photovoltaic performance of ternary OSCs resulted from extended absorption, enhanced fluorescence resonance energy transfer, balanced carrier transport, and reduced energy loss.
Article
Chemistry, Physical
Yihan Zeng et al.
Summary: Ternary architecture shows potential in enhancing power conversion efficiencies of organic solar cells, with the fill factor generally below 78%. Studies indicate that effective exciton dissociation, enhanced charge transport, and suppressed recombination are crucial for achieving high-fill factor and low-energy loss in ternary cells.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Ming-Yang Ni et al.
Summary: The study explores the use of a new PDI-tetramer, Cor-T-PDI, as a second acceptor to enhance the open-circuit voltage of a PM6:Y6 base ternary system in organic solar cells. By adjusting the ratio and creating a cascade energy level alignment, a significantly increased V-oc value was achieved without sacrificing J(sc) and FF, resulting in high PCE performance with low energy loss. This strategy demonstrates the potential for improving efficiency in binary systems with high J(sc) but low or moderate V-oc values by introducing a third component with appropriate structure.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Pan Yin et al.
ENERGY & ENVIRONMENTAL SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Tao Liu et al.
ENERGY & ENVIRONMENTAL SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Yunlong Ma et al.
MATERIALS HORIZONS
(2020)
Article
Polymer Science
Qaogan Liao et al.
Article
Chemistry, Multidisciplinary
Li Nian et al.
ENERGY & ENVIRONMENTAL SCIENCE
(2018)
Article
Chemistry, Multidisciplinary
Petr P. Khlyabich et al.
ADVANCED FUNCTIONAL MATERIALS
(2015)
Review
Optics
Luyao Lu et al.
Article
Chemistry, Physical
Sonya A. Mollinger et al.
ADVANCED ENERGY MATERIALS
(2015)
