4.8 Article

Refined molecular microstructure and optimized carrier management of multicomponent organic photovoltaics toward 19.3% certified efficiency

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Chemistry, Multidisciplinary

A New End Group on Nonfullerene Acceptors Endows Efficient Organic Solar Cells with Low Energy Losses

Youwen Pan et al.

Summary: Chemical modifications were made to the famous Y-series nonfullerene acceptor BTP-4Cl-BO, resulting in the synthesis of two novel NFAs, BTP-T-2Cl and BTP-T-3Cl, with extended pi-conjugation through the fusing of IC group with a chlorinated thiophene ring. The OSC using BTP-T-2Cl exhibited a modest PCE of 14.89% with an extraordinary low energy loss of 0.49 eV, while the OSC using BTP-T-3Cl showed a higher PCE of 17.61% but with a slightly bigger energy loss of 0.51 eV. Adopting two NFAs of BTP-T-3Cl and BTP-4Cl-BO, a ternary OSC achieved an impressive PCE of 18.21%, demonstrating the effectiveness of expanding end groups of NFAs with electron-donating rings in reducing energy losses for OSCs.

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

Mechanism study on organic ternary photovoltaics with 18.3% certified efficiency: from molecule to device

Yaokai Li et al.

Summary: This study systematically investigates the working mechanism of ternary blend organic photovoltaics based on non-fullerene acceptors (NFAs). Molecular dynamics simulations and morphology characterization reveal that the addition of larger band gap and highly miscible NFAs improves composition-dependent band gap and charge recombination, leading to enhanced power conversion efficiency.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

Article Nanoscience & Nanotechnology

Dilution effect for highly efficient multiple-component organic solar cells

Lijian Zuo et al.

Summary: Research shows that the "dilution effect" mechanism in multi-component organic solar cells can enhance luminescence quantum efficiency and open-circuit voltage, achieving high energy conversion efficiency.

NATURE NANOTECHNOLOGY (2022)

Article Chemistry, Multidisciplinary

The Molecular Ordering and Double-Channel Carrier Generation of Nonfullerene Photovoltaics within Multi-Length-Scale Morphology

Jinqiu Xu et al.

Summary: The success of NFA solar cells depends not only on extended absorption and suitable energy levels, but also on the unique physical properties of the nonfullerene acceptors. This study investigates the morphology and photophysical behavior of PBDB-T donor blended with various acceptors, demonstrating the importance of molecular assembly and photophysics in the efficiency of carrier formation. The new carrier generation mechanism and multi-length-scale morphology in blended films hold promising potential for fundamental advantages in NFA solar cells.

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 Multidisciplinary Sciences

Asymmetric electron acceptor enables highly luminescent organic solar cells with certified efficiency over 18%

Chengliang He et al.

Summary: Efficient organic solar cells with high luminescence and charge collection are achieved by blending an asymmetric non-fullerene acceptor BO-5Cl with PM6 donor, resulting in a record-high electroluminescence external quantum efficiency of 0.1% and a power conversion efficiency of over 15%. Incorporating BO-5Cl as the third component in a widely-studied PM6:BO-4Cl blend further enhances the certified power conversion efficiency to 18.2%.

NATURE COMMUNICATIONS (2022)

Article Multidisciplinary Sciences

Vertically optimized phase separation with improved exciton diffusion enables efficient organic solar cells with thick active layers

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 Chemistry, Physical

Desired open-circuit voltage increase enables efficiencies approaching 19% in symmetric-asymmetric molecule ternary organic photovoltaics

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

Versatile Sequential Casting Processing for Highly Efficient and Stable Binary Organic Photovoltaics

Chengliang He et al.

Summary: This study investigates the advantages of using the sequential casting (SC) method for bulk heterojunction (BHJ)-based organic solar cells (OSCs). It is found that SC processing can achieve better morphology and device performance compared to the widely-used blend casting (BC) method. The observations on phase separation and vertical distribution inspire the proposal of the swelling-intercalation phase-separation model to explain the morphology evolution during SC processing. Moreover, the vertical phase segregation is found to improve device performance through affecting charge transport and collection processes.

ADVANCED MATERIALS (2022)

Review Chemistry, Multidisciplinary

Renewed Prospects for Organic Photovoltaics

Guichuan Zhang et al.

Summary: Organic photovoltaics (OPVs) have undergone three stages of development, including optimizing bulk heterojunctions, improving donor-acceptor match, and developing non-fullerene acceptors (NFAs). NFAs have resulted in higher power conversion efficiencies (PCEs) surpassing 15% due to reduced energy losses and increased quantum efficiencies. The review provides an update on recent progress in OPV technology, including novel NFAs and donors, understanding structure-property relationships, and commercialization challenges.

CHEMICAL REVIEWS (2022)

Review Chemistry, Multidisciplinary

The principles, design and applications of fused-ring electron acceptors

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)

Review Chemistry, Physical

Achieving and Understanding of Highly Efficient Ternary Organic Photovoltaics: From Morphology and Energy Loss to Working Mechanism

Shuixing Li et al.

Summary: This review presents the progress of ternary organic photovoltaic devices in terms of morphology, energy loss, and working mechanism. The addition of a third component can promote the formation of alloy-like-phase and vertical-phase, leading to an increase in voltage. It can also enhance luminescence and suppress energetic disorder, improving the photovoltaic performance. The variations in device parameters can be explained by the dilution effect and the relationships between acceptors or donor/acceptor.

SMALL METHODS (2022)

Article Chemistry, Physical

Manipulating Charge Transfer and Transport via Intermediary Electron Acceptor Channels Enables 19.3% Efficiency Organic Photovoltaics

Lingling Zhan et al.

Summary: By adopting a ternary strategy to regulate the structure of symmetric-asymmetric non-fullerene acceptors, a balance between open-circuit voltage and short-circuit current density can be achieved in organic photovoltaics, leading to higher efficiency.

ADVANCED ENERGY MATERIALS (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

Intrinsic efficiency limits in low-bandgap non-fullerene acceptor organic solar cells

Safakath Karuthedath et al.

Summary: In bulk heterojunction organic solar cells based on low-bandgap non-fullerene acceptors, ultrafast donor-to-acceptor energy transfer precedes hole transfer, and an ionization energy offset of about 0.5 eV is required for efficient charge separation.

NATURE MATERIALS (2021)

Article Multidisciplinary Sciences

Single-layered organic photovoltaics with double cascading charge transport pathways: 18% efficiencies

Ming Zhang et al.

Summary: By using quaternary blends, double cascading energy level alignment is achieved in bulk heterojunction organic photovoltaic active layers, optimizing light absorption, carrier transport, and charge-transfer state energy levels for higher power conversion efficiencies. The chemical structures of donors and acceptors allow control over electronic structure and charge-transfer state energy levels, enabling manipulation of hole-transfer rates, carrier transport, and non-radiative recombination losses.

NATURE COMMUNICATIONS (2021)

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)

Article Multidisciplinary Sciences

The role of charge recombination to triplet excitons in organic solar cells

Alexander J. Gillett et al.

Summary: The majority of charge recombination in organic solar cells that use NFAs occurs through non-emissive NFA triplet excitons under open-circuit conditions, reducing the open-circuit voltage. Engineering substantial hybridization between NFA triplet excitons and spin-triplet charge-transfer excitons can suppress this non-radiative recombination pathway, potentially leading to organic solar cells with power conversion efficiencies of 20% or more.

NATURE (2021)

Article Chemistry, Multidisciplinary

High-Efficiency Organic Photovoltaics using Eutectic Acceptor Fibrils to Achieve Current Amplification

Ming Zhang et al.

Summary: By utilizing the new physical properties of intimate eutectic mixing in nonfullerene-acceptor-based D-A(1)-A(2) ternary blends, the thin film morphology and electronic properties in organic solar cells are finely tuned to achieve significant enhancement in power conversion efficiency (PCE). The aligned cascading energy levels and suppressed recombination channels confirm efficient charge transfer and transport, leading to an improved PCE of 17.84%.

ADVANCED MATERIALS (2021)

Article Chemistry, Multidisciplinary

Small Exciton Binding Energies Enabling Direct Charge Photogeneration Towards Low-Driving-Force Organic Solar Cells

Lingyun Zhu et al.

Summary: Y6 as an NFA, with its unique charge polarization effects, has a small exciton binding energy, resulting in a distinct mechanism for charge generation in photovoltaic devices.

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, Physical

Triplet exciton formation for non-radiative voltage loss in high-efficiency nonfullerene organic solar cells

Zeng Chen et al.

Summary: Nonfullerene acceptor organic solar cells with power conversion efficiency up to 18% show the formation of NFA triplet exciton as a main non-radiative recombination and energy loss channel. Side-chain fluorination in high-efficiency NFA OSCs efficiently inhibits charge recombination to NFA triplet excitons, leading to higher V-OC and PCE. This paves the way for OSCs with lower V-OC loss and efficiency exceeding 20%.
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 Well-Mixed Phase Formed by Two Compatible Non-Fullerene Acceptors Enables Ternary Organic Solar Cells with Efficiency over 18.6%

Yunhao Cai et al.

Summary: The ternary strategy of incorporating a third component into a binary blend has led to highly efficient organic solar cells with unprecedented power conversion efficiency values.

ADVANCED MATERIALS (2021)

Article Chemistry, Multidisciplinary

Silicon Naphthalocyanine Tetraimides: Cathode Interlayer Materials for Highly Efficient Organic Solar Cells

Chunsheng Cai et al.

Summary: Naphthalocyanine derivatives (SiNcTI-N and SiNcTI-Br) were used as cathode interlayer materials (CIMs) in organic solar cells for the first time, showing excellent performance. Among them, SiNcTI-Br CIM exhibited high conductivity and electron mobility, effectively enhancing the efficiency of PM6:Y6-based OSCs.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (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 Energy & Fuels

A unified description of non-radiative voltage losses in organic solar cells

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.

NATURE ENERGY (2021)

Article Chemistry, Physical

Reduced non-radiative charge recombination enables organic photovoltaic cell approaching 19% efficiency

Pengqing Bi et al.

Summary: Introducing HDO-4Cl increased the exciton diffusion length in the acceptor phase, reducing non-radiative charge recombination and improving photon utilization efficiency in PBDB-TF: eC9-based OPV cells. This led to achieving a high-efficiency OPV cell with outstanding power conversion efficiency, demonstrating the effectiveness of regulating exciton behaviors in reducing energy loss.
Article Chemistry, Multidisciplinary

Asymmetric Electron Acceptors for High-Efficiency and Low-Energy-Loss Organic Photovoltaics

Shuixing Li et al.

ADVANCED MATERIALS (2020)

Article Chemistry, Multidisciplinary

Single-Junction Organic Photovoltaic Cells with Approaching 18% Efficiency

Yong Cui et al.

ADVANCED MATERIALS (2020)

Article Chemistry, Multidisciplinary

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

Jun Yuan et al.

Article Chemistry, Multidisciplinary

Over 17% efficiency ternary organic solar cells enabled by two non-fullerene acceptors working in an alloy-like model

Lingling Zhan et al.

ENERGY & ENVIRONMENTAL SCIENCE (2020)

Article Chemistry, Multidisciplinary

Highly Efficient Fullerene-Free Organic Solar Cells Operate at Near Zero Highest Occupied Molecular Orbital Offsets

Shuixing Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

Review Nanoscience & Nanotechnology

The role of the third component in ternary organic solar cells

Nicola Gasparini et al.

NATURE REVIEWS MATERIALS (2019)

Article Nanoscience & Nanotechnology

Photovoltaic solar cell technologies: analysing the state of the art

Pabitra K. Nayak et al.

NATURE REVIEWS MATERIALS (2019)

Article Chemistry, Multidisciplinary

17% Efficient Organic Solar Cells Based on Liquid Exfoliated WS2 as a Replacement for PEDOT:PSS

Yuanbao Lin et al.

ADVANCED MATERIALS (2019)

Review Nanoscience & Nanotechnology

Charge-transfer electronic states in organic solar cells

Veaceslav Coropceanu et al.

NATURE REVIEWS MATERIALS (2019)

Article Chemistry, Physical

Design rules for minimizing voltage losses in high-efficiency organic solar cells

Deping Qian et al.

NATURE MATERIALS (2018)

Article Chemistry, Physical

Optical Gaps of Organic Solar Cells as a Reference for Comparing Voltage Losses

Yuming Wang et al.

ADVANCED ENERGY MATERIALS (2018)

Article Physics, Applied

Quantifying Losses in Open-Circuit Voltage in Solution-Processable Solar Cells

Jizhong Yao et al.

PHYSICAL REVIEW APPLIED (2015)

Article Materials Science, Multidisciplinary

Relating the open-circuit voltage to interface molecular properties of donor:acceptor bulk heterojunction solar cells

Koen Vandewal et al.

PHYSICAL REVIEW B (2010)