4.8 Article

Selenium-Substitution Asymmetric Acceptor Enables Efficient Binary Organic Solar Cells over 18.3% via Regulating Molecular Stacking and Phase Separation

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Hybrid Cycloalkyl-Alkyl Chain-Based Symmetric/Asymmetric Acceptors with Optimized Crystal Packing and Interfacial Exciton Properties for Efficient Organic Solar Cells

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.

ADVANCED SCIENCE (2023)

Article Chemistry, Multidisciplinary

Double Asymmetric Core Optimizes Crystal Packing to Enable Selenophene-based Acceptor with Over 18 % Efficiency in Binary Organic Solar Cells

Xin Zhao et al.

Summary: In this study, two asymmetric isomeric small molecule acceptors (SMAs) with asymmetric alkyl chains and selenophene-based central core were synthesized for organic solar cells (OSCs). Crystallographic analysis showed that AYT9Se11-Cl had a more compact and ordered intermolecular packing compared to AYT11Se9-Cl, resulting in higher electron mobility in neat AYT9Se11-Cl film. The PM6 : AYT9Se11-Cl blend film exhibited better morphology with appropriate phase separation and distinct face-on orientation compared to PM6 : AYT11Se9-Cl. The OSCs with PM6 : AYT9Se11-Cl achieved a superior power conversion efficiency (PCE) of 18.12% compared to PM6 : AYT11Se9-Cl (17.52%), making it the highest efficiency for selenium-incorporated SMAs in binary BHJ OSCs.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

Article Chemistry, Multidisciplinary

Compromising Charge Generation and Recombination with Asymmetric Molecule for High-Performance Binary Organic Photovoltaics with Over 18% Certified Efficiency

Chengliang He et al.

Summary: Balancing charge generation and recombination is a major challenge in breaking the limitations of organic photovoltaics. Researchers have developed an asymmetric non-fullerene acceptor called AC9, demonstrating a high-performance OPV with a champion efficiency of 18.43%. Comprehensive analysis shows that the improved device performance of AC9-based OPVs is due to a better compromise between charge generation and non-radiative charge recombination compared to symmetric acceptors.

ADVANCED FUNCTIONAL MATERIALS (2022)

Article Chemistry, Multidisciplinary

Realizing 19.05% Efficiency Polymer Solar Cells by Progressively Improving Charge Extraction and Suppressing Charge Recombination

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, Multidisciplinary

Design of Near-Infrared Nonfullerene Acceptor with Ultralow Nonradiative Voltage Loss for High-Performance Semitransparent Ternary Organic Solar Cells

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

A selenophene-containing near-infrared unfused acceptor for efficient organic solar cells

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)

Article Chemistry, Multidisciplinary

16.3% Efficiency binary all-polymer solar cells enabled by a novel polymer acceptor with an asymmetrical selenophene-fused backbone

Huiting Fu et al.

Summary: A novel polymer acceptor, PYT-1S1Se, designed with an asymmetrical selenophene-fused framework, has been shown to optimize optical absorption and electronic properties in all-polymer solar cells. Compared with other analogs, all-PSCs derived from PYT-1S1Se demonstrate improved J(sc) and V-oc metrics, resulting in a record-high power conversion efficiency of 16.3%.

SCIENCE CHINA-CHEMISTRY (2022)

Article Materials Science, Multidisciplinary

Efficient semi-transparent organic solar cells enabled by a quasi-heterojunction active layer structure

Hao Tang et al.

Summary: The characteristics of SD-type and BHJ-type ST-OSCs were compared, and it was found that SD-type ST-OSCs have better light utilization efficiency compared to BHJ-type ST-OSCs. By introducing a second donor into the SD-type device, stability was improved and the formation of a quasi-heterojunction enhanced charge generation and collection. Transparency of the ST-OSCs was further enhanced by introducing a light out-coupling layer. The optimized ST-OSC achieved a high power conversion efficiency.

JOURNAL OF MATERIALS CHEMISTRY C (2022)

Article Chemistry, Multidisciplinary

Layer-by-Layer Processed PM6:Y6-Based Stable Ternary Polymer Solar Cells with Improved Efficiency over 18% by Incorporating an Asymmetric Thieno[3,2-b]indole-Based Acceptor

Jinglong Chen et al.

Summary: In this study, a new low-bandgap asymmetric small molecule acceptor TIT-2Cl based on thieno[3,2-b]indole core was introduced into PM6:Y6-based polymer solar cells (PSCs) to suppress the over-aggregation of Y6 molecules and improve the efficiency. The addition of TIT-2Cl contributed to improved light harvesting, charge separation, transport, and extraction. By using the layer-by-layer (LBL) progressive spin-coating method, the PSCs achieved a champion efficiency of 18.18%, the highest reported for PM6:Y6-based PSCs, with superior stability and compositional insensitivity.

ADVANCED FUNCTIONAL MATERIALS (2022)

Article Chemistry, Multidisciplinary

Isogenous Asymmetric-Symmetric Acceptors Enable Efficient Ternary Organic Solar Cells with Thin and 300 nm Thick Active Layers Simultaneously

Hai-Rui Bai et al.

Summary: By incorporating an asymmetric acceptor into binary blends, ternary organic solar cells (OSCs) were prepared. The good compatibility of two isogenous acceptors with similar chemical skeletons optimized the morphology and improved the photon absorption ability and energy level matching. The optimized ternary OSCs achieved high conversion efficiency and champion efficiency.

ADVANCED FUNCTIONAL MATERIALS (2022)

Article Chemistry, Multidisciplinary

Asymmetric Substitution of End-Groups Triggers 16.34% Efficiency for All-Small-Molecule Organic Solar Cells

Jinfeng Ge et al.

Summary: Asymmetric substitution of end-groups is applied in molecular donors for the first time, resulting in donors with increased dipole moments and enhanced aggregation propensity. Among the asymmetric donors studied, SM-CA-Reh shows the highest power conversion efficiency (PCE) and fill factor (FF) when using N3 as the acceptor. Characterization results suggest that the packing morphology of blend films is mainly influenced by π-π interaction rather than dipole effect or crystallinity.

ADVANCED MATERIALS (2022)

Article Chemistry, Multidisciplinary

Single-Junction Organic Solar Cells with 19.17% Efficiency Enabled by Introducing One Asymmetric Guest Acceptor

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, Physical

Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology

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%.

NATURE MATERIALS (2022)

Article Nanoscience & Nanotechnology

Vinylene-Inserted Asymmetric Polymer Acceptor with Absorption Approaching 1000 nm for Versatile Applications in All-Polymer Solar Cells and Photomultiplication-Type Polymeric Photodetectors

Qunping Fan et al.

Summary: Emerging polymerized small-molecule acceptors (PSMAs) with near-infrared (NIR) absorption have greatly increased the power conversion efficiencies (PCEs) of all-polymer solar cells (all-PSCs) and have shown promising potential for sensitive NIR polymeric photodetectors (PPDs).

ACS APPLIED MATERIALS & INTERFACES (2022)

Article Chemistry, Multidisciplinary

Achieving 19% Power Conversion Efficiency in Planar-Mixed Heterojunction Organic Solar Cells Using a Pseudosymmetric Electron Acceptor

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)

Article Chemistry, Multidisciplinary

Binary Organic Solar Cells Breaking 19% via Manipulating the Vertical Component Distribution

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

Intramolecular Chloro-Sulfur Interaction and Asymmetric Side-Chain Isomerization to Balance Crystallinity and Miscibility in All-Small-Molecule Solar Cells

Wei Gao et al.

Summary: Intramolecular Cl-S non-covalent interaction was utilized to modify the molecular backbone of a benzodithiophene terthiophene rhodamine (BTR) benchmark structure, resulting in improved charge transport and increased efficiency in organic solar cells.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Multidisciplinary

Manipulating the D:A interfacial energetics and intermolecular packing for 19.2% efficiency organic photovoltaics

Chengliang He et al.

Summary: Manipulating the donor:acceptor energetics is crucial for achieving balanced charge separation and recombination in organic solar cells (OSCs). In this study, a non-fullerene electron acceptor, BTP-H2, was designed and synthesized to pair with the polymer donor PM6, showing strong intermolecular interaction and near-zero highest occupied molecular orbital (HOMO) offset. The results demonstrated efficient charge separation and optimized energy conversion, leading to high-performance OSCs with a power conversion efficiency (PCE) of 18.5% and a peak photon-to-electron response of approximately 90%.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

Article Chemistry, Physical

18.42% efficiency polymer solar cells enabled by terpolymer donors with optimal miscibility and energy levels

Zhihui Liao et al.

Summary: Researchers synthesized a series of terpolymer donors with varying fractions of ester-substituted thiazole (E-Tz) units using random ternary copolymerization. They found that fine-tuning the E-Tz content can optimize the energy levels, electrostatic potentials, molecular aggregation, miscibility, and morphology, resulting in improved performance parameters for photovoltaic devices.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

Review Chemistry, Multidisciplinary

Selenium-Containing Organic Photovoltaic Materials

Baobing Fan et al.

Summary: Organic photovoltaics (OPVs) with a blend of organic donor and acceptor species have good potential for scalability challenges, and the delicate design of the materials significantly enhances their performance. Incorporating selenium atoms into organic conjugated materials is an effective way to lower the optical band gap and improve charge carrier mobility in the solid state, leading to higher efficiency in OPV devices.

ACCOUNTS OF CHEMICAL RESEARCH (2021)

Article Chemistry, Physical

Asymmetric Acceptors Enabling Organic Solar Cells to Achieve an over 17% Efficiency: Conformation Effects on Regulating Molecular Properties and Suppressing Nonradiative Energy Loss

Wei Gao et al.

Summary: This study demonstrates that adjusting the molecular conformation of Y6-type NFAs can lead to high efficiency and reduced energy loss in organic solar cells.

ADVANCED ENERGY MATERIALS (2021)

Article Chemistry, Applied

Performance of asymmetric non-fullerene acceptors containing the 4,4,9,9-tetramethyl-4,9-dihydroselenopheno[2′,3′:5,6]-s-indaceno[1,2-b] thiophene core

Shengna Liu et al.

Summary: Through changing the terminated groups, three asymmetric non-fullerene acceptors containing a 4,4,9,9-tetramethyl-4,9-dihydroselenopheno[2',3':5,6]-s-indaceno[1,2-b]thiophene fused-ring core were designed and synthesized. The resulting molecules exhibit different optical properties and photovoltaic performances, with T-Se-Th showing the highest power conversion efficiency.

DYES AND PIGMENTS (2021)

Article Chemistry, Physical

Enabling High Efficiency of Hydrocarbon-Solvent Processed Organic Solar Cells through Balanced Charge Generation and Non-Radiative Loss

Baobing Fan et al.

Summary: The researchers developed a simple method to process organic solar cells in non-halogenated solvents, achieving high power conversion efficiency by selecting suitable donor/acceptor materials and tuning solvent compositions.

ADVANCED ENERGY MATERIALS (2021)

Article Chemistry, Multidisciplinary

Multi-Selenophene-Containing Narrow Bandgap Polymer Acceptors for All-Polymer Solar Cells with over 15 % Efficiency and High Reproducibility

Qunping Fan et al.

Summary: The newly developed multi-selenophene-containing PSMA material PFY-3Se shows outstanding performance in all-polymer solar cells, with high efficiency, low energy loss, and good batch-to-batch reproducibility, indicating great potential for practical applications.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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)

Article Chemistry, Multidisciplinary

Asymmetric and Halogenated Fused-Ring Electron Acceptor for Efficient Organic Solar Cells

Jinlong Cai et al.

Summary: By systematically designing and synthesizing asymmetric and halogenated NFAs, this study demonstrates that IDTT-Cl-2F, when blended with the donor material PBDB-T-2Cl, can achieve the highest PCE among NFAs, showing superior performance.

ADVANCED FUNCTIONAL MATERIALS (2021)

Article Chemistry, Multidisciplinary

Asymmetric Isomer Effects in Benzo[c ][1,2,5]thiadiazole-Fused Nonacyclic Acceptors: Dielectric Constant and Molecular Crystallinity Control for Significantly Photovoltaic Performance Enhancement

Wei Gao et al.

Summary: By systematically exploring asymmetric isomer effects, new non-acyclic electron acceptors were designed and synthesized to significantly improve the power conversion efficiency of organic solar cells. The asymmetric isomerization strategy effectively inhibits molecular aggregation and unfavorable orientations, leading to more efficient dissociation and optimized microstructure, resulting in a remarkably higher PCE.

ADVANCED FUNCTIONAL MATERIALS (2021)

Review Chemistry, Multidisciplinary

Pushing the Limits of Flexibility and Stretchability of Solar Cells: A Review

Emilie Dauzon et al.

Summary: Emerging forms of soft, flexible, and stretchable electronics have the potential to revolutionize the future electronics industry, with stretchable photovoltaics as self-powering systems showing great promise for various applications. Current research is focused on achieving wearability and stretchability in electronic systems, utilizing both extrinsic and intrinsic approaches for inducing stretchability.

ADVANCED MATERIALS (2021)

Article Chemistry, Multidisciplinary

Single-Junction Organic Photovoltaic Cell with 19% Efficiency

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

A Synergistic Strategy of Manipulating the Number of Selenophene Units and Dissymmetric Central Core of Small Molecular Acceptors Enables Polymer Solar Cells with 17.5 % Efficiency

Can Yang et al.

Summary: By using a dissymmetric backbone and selenophene substitution on the central core, symmetric or dissymmetric A-DA'D-A type non-fullerene small molecular acceptors with varying numbers of selenophene were synthesized, leading to improved device performance and efficiency.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

A Noncovalently Fused-Ring Asymmetric Electron Acceptor Enables Efficient Organic Solar Cells

Ji Lin et al.

Summary: A novel asymmetric A-D-π-A type NFA PIST-4F with S···S noncovalent interaction exhibits optimized electronic properties, charge transport, and film morphology compared to the symmetric NFA PI-4F. Devices based on PM6:PIST-4F achieve a higher PCE, indicating PIST-4F is an effective acceptor for high-efficiency organic solar cells.

CHINESE JOURNAL OF CHEMISTRY (2021)

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)

Article Multidisciplinary Sciences

Unveiling structure-performance relationships from multi-scales in non-fullerene organic photovoltaics

Shuixing Li et al.

Summary: The study conducted on four non-fullerene acceptors reveals how extended conjugation, asymmetric terminals, and alkyl chain length can affect device performance. Understanding correlations between molecular structures and macroscopic properties is critical in realizing highly efficient organic photovoltaics.

NATURE COMMUNICATIONS (2021)

Article Chemistry, Physical

Green solvent-processed, high-performance organic solar cells achieved by outer side-chain selection of selenophene-incorporated Y-series acceptors

Changkyun Kim et al.

Summary: The study focuses on developing green solvent-processable small molecular acceptors (SMAs) for high-performance organic solar cells (OSCs). It is found that the outer side-chain structure of Y-series SMAs has a significant impact on the performance of OSCs, with YSe-C6 blend achieving the highest power conversion efficiency. The optimized morphology of YSe-C6 blend allows for active layer thickness-independent efficiency, showing potential for large-scale device manufacturing via eco-friendly printing processes.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Article Chemistry, Multidisciplinary

Impact of symmetry-breaking of non-fullerene acceptors for efficient and stable organic solar cells

Peddaboodi Gopikrishna et al.

Summary: This study demonstrates that asymmetric structural modifications of NFAs can improve the photovoltaic performance and stability of OSCs, with IPC-BEH-IC2F exhibiting the best material properties in this aspect.

CHEMICAL SCIENCE (2021)

Article Chemistry, Physical

Selenium-containing two-dimensional conjugated fused-ring electron acceptors for enhanced crystal packing, charge transport, and photovoltaic performance

Shi-Sheng Wan et al.

Summary: In this study, two chlorinated two-dimensional fused-ring electron acceptors were synthesized for polymer solar cells, with C8T-BDSe4Cl demonstrating superior absorption properties and optical bandgap, as well as stronger intermolecular interactions according to crystallographic analysis. The blend film with C8T-BDSe4Cl exhibited a favorable morphology for efficient charge separation and transport, leading to higher power conversion efficiency in PSCs compared to the sulfur-containing analogue.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Article Chemistry, Multidisciplinary

Additive-induced miscibility regulation and hierarchical morphology enable 17.5% binary organic solar cells

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)

Article Chemistry, Multidisciplinary

A Synergistic Strategy of Manipulating the Number of Selenophene Units and Dissymmetric Central Core of Small Molecular Acceptors Enables Polymer Solar Cells with 17.5% Efficiency

Can Yang et al.

Summary: The synthesis of symmetric or dissymmetric A-DA'D-A type non-fullerene small molecular acceptors (NF-SMAs) using a dissymmetric backbone and selenophene substitution on the central core leads to improved optical and electrical properties. Increasing the number of selenophene results in a red-shifted absorption, as well as larger electron mobility and crystallinity in the thin film. The combination of dissymmetric core and precise replacement of selenophene effectively enhances charge transport characteristics in binary polymer solar cells.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Single-Junction Organic Photovoltaic Cells with Approaching 18% Efficiency

Yong Cui et al.

ADVANCED MATERIALS (2020)

Article Multidisciplinary Sciences

18% Efficiency organic solar cells

Qishi Liu et al.

SCIENCE BULLETIN (2020)

Article Chemistry, Multidisciplinary

A Non-fullerene Acceptor with Enhanced Intermolecular π-Core Interaction for High-Performance Organic Solar Cells

Francis Lin et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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)

Article Chemistry, Physical

An asymmetric small molecule acceptor for organic solar cells with a short circuit current density over 24 mA cm-2

Fangfang Cai et al.

JOURNAL OF MATERIALS CHEMISTRY A (2020)

Article Materials Science, Multidisciplinary

Green solvent-processed organic solar cells based on a low cost polymer donor and a small molecule acceptor

He Huang et al.

JOURNAL OF MATERIALS CHEMISTRY C (2020)

Article Multidisciplinary Sciences

A low cost and high performance polymer donor material for polymer solar cells

Chenkai Sun et al.

NATURE COMMUNICATIONS (2018)

Article Chemistry, Multidisciplinary

A Large-Bandgap Conjugated Polymer for Versatile Photovoltaic Applications with High Performance

Maojie Zhang et al.

ADVANCED MATERIALS (2015)

Article Chemistry, Multidisciplinary

An Electron Acceptor Challenging Fullerenes for Efficient Polymer Solar Cells

Yuze Lin et al.

ADVANCED MATERIALS (2015)

Article Chemistry, Multidisciplinary

Understanding Low Bandgap Polymer PTB7 and Optimizing Polymer Solar Cells Based on It

Luyao Lu et al.

ADVANCED MATERIALS (2014)