Non-fullerene acceptor pre-aggregates enable high efficiency pseudo-bulk heterojunction organic solar cells

Article Chemistry, Multidisciplinary

Heating-induced aggregation control for efficient sequential-cast organic solar cells

Donghui Li et al.

Summary: Heating-induced aggregation and sequential casting strategies can effectively control the aggregation and morphology of nonfullerene acceptors within the photoactive layer, leading to improved performance of organic solar cells.

AGGREGATE (2022)

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Article Chemistry, Multidisciplinary

Improving Photovoltaic Performance of Non-Fullerene Polymer Solar Cells Enables by Fine-Tuning Blend Microstructure via Binary Solvent Mixtures

Yue Yu et al.

Summary: This study demonstrates an effective co-solvent blending strategy to improve the molecular organization of a chlorinated small molecule acceptor and phase separation with the corresponding donor, leading to improved photovoltaic performance.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Multidisciplinary Sciences

Pseudo-bilayer architecture enables high-performance organic solar cells with enhanced exciton diffusion length

Kui Jiang et al.

Summary: High-efficiency OSCs with a pseudo-bilayer architecture and optimized ternary system exhibit longer exciton diffusion length and higher power conversion efficiency. The pseudo-bilayer architecture shows excellent potential for future OSC applications.

NATURE COMMUNICATIONS (2021)

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Review Chemistry, Physical

A History and Perspective of Non-Fullerene Electron Acceptors for Organic Solar Cells

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)

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Article Chemistry, Physical

Efficient Organic Solar Cells from Molecular Orientation Control of M-Series Acceptors

Yunlong Ma et al.

Summary: Controlling the molecular orientation of nonfullerene acceptors by adjusting side chains leads to improved device performance, with M3 showing higher efficiency compared to M32 when blended with a donor polymer such as PM6.

JOULE (2021)

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Article Chemistry, Multidisciplinary

Layer-by-Layer Processed Ternary Organic Photovoltaics with Efficiency over 18%

Lingling Zhan et al.

Summary: This study proposes and demonstrates a method to optimize the morphology of the active layer in organic photovoltaic devices by combining the layer-by-layer (LbL) procedure and the ternary strategy. By adding an asymmetric electron acceptor to the binary donor:acceptor host, a vertical phase distribution is formed, leading to improved efficiency in OPV devices.

ADVANCED MATERIALS (2021)

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Article Chemistry, Physical

Sequential Deposition of Donor and Acceptor Provides High-Performance Semitransparent Organic Photovoltaics Having a Pseudo p-i-n Active Layer Structure

Hao-Cheng Wang et al.

Summary: A sequential deposition strategy is proposed for achieving semitransparent organic photovoltaics (ST-OPVs) with high efficiency and high transparency. Research shows that the SD devices have higher power conversion efficiency and visible light transmittance values compared to BHJ devices at a given active layer thickness. Therefore, the SD strategy provides a new approach for realizing ST-OPVs with both high efficiency and high transparency.

ADVANCED ENERGY MATERIALS (2021)

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Article Chemistry, Applied

Heating induced aggregation in non-fullerene organic solar cells towards high performance

Baocai Du et al.

Summary: The study successfully achieved a maximum efficiency of 13.9% for PBDB-T:m-INPOIC binary OSCs through a heating induced aggregation strategy and thermal annealing treatment, providing a practical method to enhance device performance.

JOURNAL OF ENERGY CHEMISTRY (2021)

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Article Energy & Fuels

Non-fullerene acceptors with branched side chains and improved molecular packing to exceed 18% efficiency in organic solar cells

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.

NATURE ENERGY (2021)

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Article Chemistry, Multidisciplinary

High-performance polymer solar cells with efficiency over 18% enabled by asymmetric side chain engineering of non-fullerene acceptors

Shihao Chen et al.

Summary: The research suggests that asymmetric side-chain engineering can effectively tune the properties of non-fullerene small-molecule acceptors (NFSMAs) and improve the power conversion efficiency for binary non-fullerene polymer solar cells (NFPSCs). Introducing proper asymmetric side chains in NFSMAs can induce favorable face-on molecule orientation, enhance carrier mobilities, balance charge transport, and reduce recombination losses, leading to improved overall performance in NFPSCs.

SCIENCE CHINA-CHEMISTRY (2021)

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Article Multidisciplinary Sciences

Graded bulk-heterojunction enables 17% binary organic solar cells via nonhalogenated open air coating

Ying Zhang et al.

Summary: The study demonstrates an effective graded bulk-heterojunction (G-BHJ) strategy using nonhalogenated solvent sequential deposition for nonfullerene acceptor (NFA) organic solar cells, achieving outstanding power conversion efficiency (PCE) of 17.48%. Advanced techniques such as depth-profiling X-ray photoelectron spectroscopy (DP-XPS) and angle-dependent grazing incidence X-ray diffraction (GI-XRD) enable visualization of morphology and crystallinity gradient distributions, leading to high PCEs of thick OSCs. The use of nonhalogenated solvent in G-BHJ OSC via open-air blade coating achieves a record 16.77% PCE by suppressing unfavorable phase separation in bulk-heterojunction. Overall, the G-BHJ strategy shows great promise for highly efficient, eco-friendly, and scalable organic solar cells.

NATURE COMMUNICATIONS (2021)

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Review Chemistry, Multidisciplinary

Control of aggregated structure of photovoltaic polymers for high-efficiency solar cells

Mengyuan Gao et al.

Summary: This review provides a comprehensive overview of the research progress and current status of aggregated structure in pi-Conjugated organic/polymer materials-based solar cells, covering characteristic parameters, characterization techniques, control strategies, record efficiency achievements, and structure-performance relationships. Future challenges and research prospects in understanding and optimizing the aggregated structure of photovoltaic polymers and their blends are also discussed.

AGGREGATE (2021)

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Article Chemistry, Multidisciplinary

A universal method for constructing high efficiency organic solar cells with stacked structures

Yanan Wei et al.

Summary: The study introduces an eco-friendly solvent protection method for high-performance organic solar cells with stacked structures. Results show that this method demonstrates good photovoltaic performance in various systems, and proposes a protective factor to quantitatively evaluate the effectiveness of the method.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary

High-Performance Pseudoplanar Heterojunction Ternary Organic Solar Cells with Nonfullerene Alloyed Acceptor

Ji Wan et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Single-Junction Organic Photovoltaic Cells with Approaching 18% Efficiency

Yong Cui et al.

ADVANCED MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Bromination: An Alternative Strategy for Non-Fullerene Small Molecule Acceptors

Huan Wang et al.

ADVANCED SCIENCE (2020)

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Article Multidisciplinary Sciences

18% Efficiency organic solar cells

Qishi Liu et al.

SCIENCE BULLETIN (2020)

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Article Chemistry, Physical

Efficient Organic Solar Cell with 16.88% Efficiency Enabled by Refined Acceptor Crystallization and Morphology with Improved Charge Transfer and Transport Properties

Lei Zhu et al.

ADVANCED ENERGY MATERIALS (2020)

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Article Polymer Science

Modulation of J-Aggregation of Nonfullerene Acceptors toward Near-Infrared Absorption and Enhanced Efficiency

Xue Zhang et al.

MACROMOLECULES (2020)

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Article Chemistry, Multidisciplinary

Crystallography, Morphology, Electronic Structure, and Transport in Non-Fullerene/Non-Indacenodithienothiophene Polymer:Y6 Solar Cells

Weigang Zhu et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Multidisciplinary

Selenium Heterocyclic Electron Acceptor with Small Urbach Energy for As-Cast High-Performance Organic Solar Cells

Zhenzhen Zhang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Multidisciplinary

Reducing Voltage Losses in the A-DA'D-A Acceptor-Based Organic Solar Cells

Jun Yuan et al.

CHEM (2020)

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Article Chemistry, Physical

A Generally Applicable Approach Using Sequential Deposition to Enable Highly Efficient Organic Solar Cells

Huiting Fu et al.

SMALL METHODS (2020)

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Article Chemistry, Multidisciplinary

Highly efficient non-fullerene organic solar cells enabled by a delayed processing method using a non-halogenated solvent

Xiaopeng Xu et al.

ENERGY & ENVIRONMENTAL SCIENCE (2020)

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Article Chemistry, Multidisciplinary

Balancing the pre-aggregation and crystallization kinetics enables high efficiency slot-die coated organic solar cells with reduced non-radiative recombination losses

Baojun Lin et al.

ENERGY & ENVIRONMENTAL SCIENCE (2020)

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Article Chemistry, Physical

Trifluoromethylation Enables a 3D Interpenetrated Low-Band-Gap Acceptor for Efficient Organic Solar Cells

Hanjian Lai et al.

JOULE (2020)

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Article Chemistry, Physical

Fluorinated solid additives enable high efficiency non-fullerene organic solar cells

Jinlong Cai et al.

JOURNAL OF MATERIALS CHEMISTRY A (2020)

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Review Physics, Multidisciplinary

A review of non-fullerene polymer solar cells: from device physics to morphology control

Robert S. Gurney et al.

REPORTS ON PROGRESS IN PHYSICS (2019)

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Article Chemistry, Multidisciplinary

Regulating the morphology of fluorinated non-fullerene acceptor and polymer donor via binary solvent mixture for high efficiency polymer solar cells

Mengxue Chen et al.

SCIENCE CHINA-CHEMISTRY (2019)

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Article Nanoscience & Nanotechnology

Molecular Ordering and Performance of Ternary Nonfullerene Organic Solar Cells via Bar-Coating in Air with an Efficiency over 13%

Yuchao Mao et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

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Article Chemistry, Physical

13.9% Efficiency Ternary Nonfullerene Organic Solar Cells Featuring Low-Structural Order

Baocai Du et al.

ACS ENERGY LETTERS (2019)

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Article Chemistry, Multidisciplinary

Retarding the Crystallization of a Nonfullerene Electron Acceptor for High-Performance Polymer Solar Cells

Wei Li et al.

ADVANCED FUNCTIONAL MATERIALS (2019)

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Article Chemistry, Applied

Morphology and efficiency enhancements of PTB7-Th:ITIC nonfullerene organic solar cells processed via solvent vapor annealing

Robert S. Gurney et al.

JOURNAL OF ENERGY CHEMISTRY (2019)

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Article Chemistry, Physical

Hierarchical Morphology Stability under Multiple Stresses in Organic Solar Cells

Ke Zhou et al.

ACS ENERGY LETTERS (2019)

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Article Chemistry, Multidisciplinary

Enhanced π-π Interactions of Nonfullerene Acceptors by Volatilizable Solid Additives in Efficient Polymer Solar Cells

Runnan Yu et al.

ADVANCED MATERIALS (2019)

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Article Chemistry, Physical

Self-assembly of donor-acceptor conjugated polymers induced by miscible 'poor' solvents

Yuyin Xi et al.

SOFT MATTER (2019)

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Review Nanoscience & Nanotechnology

Morphology of organic photovoltaic non-fullerene acceptors investigated by grazing incidence X-ray scattering techniques

Y. Xiao et al.

MATERIALS TODAY NANO (2019)

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Article Chemistry, Physical

Single-Junction Organic Solar Cell with over 15% Efficiency Using Fused-Ring Acceptor with Electron-Deficient Core

Jun Yuan et al.

JOULE (2019)

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Article Chemistry, Physical

Alkyl Chain Tuning of Small Molecule Acceptors for Efficient Organic Solar Cells

Kui Jiang et al.

JOULE (2019)

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Article Chemistry, Physical

Molecular Order Control of Non-fullerene Acceptors for High-Efficiency Polymer Solar Cells

Wei Li et al.

JOULE (2019)

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Article Chemistry, Multidisciplinary

A universal layer-by-layer solution-processing approach for efficient non-fullerene organic solar cells

Rui Sun et al.

ENERGY & ENVIRONMENTAL SCIENCE (2019)

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Article Chemistry, Multidisciplinary

Enhancing the Performance of Polymer Solar Cells via Core Engineering of NIR-Absorbing Electron Acceptors

Shuixing Dai et al.

ADVANCED MATERIALS (2018)

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Review Chemistry, Physical

Organic solar cells based on non-fullerene acceptors

Jianhui Hou et al.

NATURE MATERIALS (2018)

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Article Energy & Fuels

Correlating Three-dimensional Morphology With Function in PBDB-T:IT-M Non-Fullerene Organic Solar Cells

Wei Li et al.

SOLAR RRL (2018)

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Article Chemistry, Multidisciplinary

Achieving Highly Efficient Nonfullerene Organic Solar Cells with Improved Intermolecular Interaction and Open-Circuit Voltage

Huifeng Yao et al.

ADVANCED MATERIALS (2017)

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Review Chemistry, Multidisciplinary

Conjugated-Polymer Blends for Organic Photovoltaics: Rational Control of Vertical Stratification for High Performance

Yu Yan et al.

ADVANCED MATERIALS (2017)

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Article Chemistry, Multidisciplinary

An Electron Acceptor Challenging Fullerenes for Efficient Polymer Solar Cells

Yuze Lin et al.

ADVANCED MATERIALS (2015)

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Non-fullerene acceptor pre-aggregates enable high efficiency pseudo-bulk heterojunction organic solar cells

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