Polymerized Naphthalimide Derivatives as Remarkable Electron-Transport Layers for Inverted Organic Solar Cells

Article Chemistry, Multidisciplinary

Phenol-Functionalized Perylene Bisimides as Amine-Free Electron Transporting Interlayers for Stable Nonfullerene Organic Solar Cells

Xinbo Wen et al.

Summary: A new electron transporting layer composed of PBI-2P is successfully applied to nonfullerene organic solar cells, resulting in improved device stability and efficiency.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Review Chemistry, Physical

Recent progress in all-small-molecule organic photovoltaics

Chunyu Xu et al.

Summary: Solution-processed organic photovoltaics (OPVs) have great potential in next-generation photovoltaic technology due to their advantages of light weight, low cost, easy fabrication, high mechanical flexibility and good semitransparency. However, all-small-molecule OPVs (SMPVs) still lag behind polymer based OPVs in terms of power conversion efficiency. In this review, the development of SMPVs is summarized as small molecular material design and device engineering, with challenges and perspectives discussed for further improvement. The summary on typical SMPV studies provides inspiration for researchers in synthesizing new small molecular materials and fabricating highly efficient SMPVs.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Chemistry, Multidisciplinary

Hybrid Cathode Interlayer Enables 17.4% Efficiency Binary Organic Solar Cells

Hang Song et al.

Summary: The emergence of fused ring electron acceptors has improved the power conversion efficiency of organic solar cells. However, the development of cathode interlayers lags behind and limits device performance. This study demonstrates the effectiveness of a hybrid cathode interlayer in improving device efficiency and provides insights for the selection and engineering of cathode interlayers.

ADVANCED SCIENCE (2022)

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Article Nanoscience & Nanotechnology

N-Type Self-Doped Hyperbranched Conjugated Polyelectrolyte as Electron Transport Layer for Efficient Nonfullerene Organic Solar Cells

Dan Zhou et al.

Summary: The novel hyperbranched conjugated polyelectrolyte (CPE) significantly improves the power conversion efficiency (PCE) of nonfullerene organic solar cells (NOSCs), enhancing carrier transport and collection in the devices.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Boosting the Efficiency of Non-fullerene Organic Solar Cells via a Simple Cathode Modification Method

Siyi Ding et al.

Summary: This study demonstrates a simple and effective method to enhance the power conversion efficiency of highly efficient non-fullerene organic solar cells by mixing two electron transport materials. The new electron transport layer shows improved alignment with the active layer's energy level and morphology, leading to enhanced charge extraction, selectivity, and reduced exciton recombination. These improvements result in a boosted PCE in the PM6:Y6-based solar cells and also lead to leading results in binary all-polymer solar cells when combined with the non-halogenated solvent-processed PM6:PY-IT-based active layer.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Zinc Oxide-Perylene Diimide Hybrid Electron Transport Layers for Air-Processed Inverted Organic Photovoltaic Devices

Edward Cieplechowicz et al.

Summary: In this study, perylene diimide films were successfully formed from green solvents for use as electron transporting layers in inverted-type organic photovoltaics. Functionalized PDIN-H films showed improved device power conversion efficiency when used to modify the surface of ZnO in air-processed and tested inverted-type organic photovoltaics.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Review Chemistry, Multidisciplinary

Latest Progress on Photoabsorbent Materials for Multifunctional Semitransparent Organic Solar Cells

Gururaj P. Kini et al.

Summary: Semi-transparent organic solar cells (ST-OSCs) have shown significant progress recently, with increased power conversion efficiency and average visible transparency, achieved through the use of low bandgap semiconductors. This technology has transformed traditional OSC devices into multifunctional devices, paving the way for future applications in various fields.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Energy & Fuels

An N-type Naphthalene Diimide Ionene Polymer as Cathode Interlayer for Organic Solar Cells

Roberto Sorrentino et al.

Summary: A naphthalene diimide-based cathode interlayer (NDI-OH) was synthesized and used in both fullerene and non-fullerene PSCs, leading to an increase in power conversion efficiencies. This cationic polyelectrolyte showed good solubility in alcohol solvents, transparency in the visible range, self-doping behavior, and good film forming ability, making it a promising cathode interlayer for PSCs.

ENERGIES (2021)

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Article Chemistry, Multidisciplinary

Progress in Organic Solar Cells: Materials, Physics and Device Engineering

Pengqing Bi et al.

Summary: Organic solar cells (OSCs) have been developed for few decades and the record power conversion efficiency (PCE) has exceeded 17%. The rapid development of OSCs is attributed to multi-disciplinary efforts in new materials synthesizing, device physics, and device engineering, especially the breakthroughs in these disciplines.

CHINESE JOURNAL OF CHEMISTRY (2021)

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Article Chemistry, Applied

A low temperature processable tin oxide interlayer via amine-modification for efficient and stable organic solar cells

Shun Guang et al.

Summary: The use of ethanolamine-treated tin oxide as an electron transport layer shows potential for improving the performance and stability of organic solar cells.

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 Nanoscience & Nanotechnology

Ti-Oxo Clusters with Peripheral Alkyl Groups as Cathode Interlayers for Efficient Organic Solar Cells

Xing Chen et al.

Summary: Three independent Ti-oxo clusters with precise chemical structures are developed as cathode interlayers in OSCs, providing high power conversion efficiency. These TOCs have excellent solubility, well-aligned work function, and can easily form smooth films.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Wide Bandgap Polymer with Narrow Photon Harvesting in Visible Light Range Enables Efficient Semitransparent Organic Photovoltaics

Chunyu Xu et al.

Summary: The study successfully prepared efficient semitransparent organic photovoltaic devices using a wide bandgap polymer and a small molecule blend system, achieving high visible light transmittance and high photovoltaic conversion efficiency through adjusting the blend ratio and optimizing the electrode structure.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Nanographene-Osmapentalyne Complexes as a Cathode Interlayer in Organic Solar Cells Enhance Efficiency over 18%

Longzhu Liu et al.

Summary: Interface engineering through conjugated extension of metal-nanographene molecules as cathode interlayer materials has successfully enhanced the photovoltaic performance of nonfullerene solar cells. Modified hexabenzocoronenes-styryl can effectively improve the performance of organic solar cells by facilitating carrier transport and impeding carrier recombination through better interfacial contacts and morphology regulation.

ADVANCED MATERIALS (2021)

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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)

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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)

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Article Polymer Science

Electron Transport Layers Based on Oligo(ethylene glycol)-Incorporated Polymers Enabling Reproducible Fabrication of High-Performance Organic Solar Cells

Seungjin Lee et al.

Summary: Interlayers in organic solar cells play a critical role in determining their performance, efficiency, and stability. In this study, two NDI-based n-type polymers with OEG side chains were designed as new electron transport layers in OSCs, showing enhanced efficiency and reproducibility compared to traditional ETLs. The OEG-based ETLs also exhibited higher storage stability and better film uniformity, providing valuable insights for the fabrication of high-performance and stable OSCs.

MACROMOLECULES (2021)

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Article Materials Science, Multidisciplinary

Recent advances of interface engineering for non-fullerene organic solar cells

Li Tian et al.

Summary: This mini-review provides a brief overview of recent developments in interfacial engineering for non-fullerene organic solar cells (NF-OSCs), focusing on the design and application of cathode/anode interface materials for NF-OSCs and interconnecting materials for nonfullerene organic tandem solar cells. The review also offers helpful guidance and challenges regarding interface materials for NF-OSCs.

ORGANIC ELECTRONICS (2021)

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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.

JOULE (2021)

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Article Chemistry, Physical

Non-conjugated electrolytes as thickness-insensitive interfacial layers for high-performance organic solar cells

Yufu Yu et al.

Summary: This study develops low-cost and thickness-insensitive non-conjugated electron transporting layers for organic solar cells. PEDETA-DBO shows better photovoltaic performance, with the ability for electron acceptors to penetrate into the electrolyte network for efficient electron extraction, demonstrating desirable thickness-insensitive properties.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Physical

Bathocuproine as a cathode interlayer for nonfullerene organic solar cells with efficiency over 17%

Tiefeng Liu et al.

Summary: Researchers have found that Bathocuproine (BCP) can be a very efficient cathode interlayer (CIL) for nonfullerene-based organic solar cells (OSCs), achieving a power conversion efficiency over 17%. However, BCP does not work well with a nonfullerene active layer, resulting in poor performance, but adding fullerene can improve the efficiency.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Review Chemistry, Multidisciplinary

Interlayers for non-fullerene based polymer solar cells: distinctive features and challenges

Roberto Sorrentino et al.

Summary: Polymer solar cells based on non-fullerene acceptors have achieved high power conversion efficiencies recently. Interlayers play a key role in charge collection and device stability, but the mechanisms are not fully understood yet.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Materials Science, Multidisciplinary

TBP precursor agent passivated ZnO electron transport layer for highly efficient polymer solar cells

Zhongqiang Wang et al.

ORGANIC ELECTRONICS (2020)

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Article Multidisciplinary Sciences

Semitransparent polymer solar cells with 12.37% efficiency and 18.6% average visible transmittance

Zhenghao Hu et al.

SCIENCE BULLETIN (2020)

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Printable SnO2 cathode interlayer with up to 500 nm thickness-tolerance for high-performance and large-area organic solar cells

Yiming Bai et al.

SCIENCE CHINA-CHEMISTRY (2020)

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Cathode engineering with perylene-diimide interlayer enabling over 17% efficiency single-junction organic solar cells

Jia Yao et al.

NATURE COMMUNICATIONS (2020)

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Naphthalene-Diimide-Based Ionenes as Universal Interlayers for Efficient Organic Solar Cells

Ming Liu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Non -conjugated polymers as thickness -insensitive electron transport materials in high-performance inverted organic solar cells

Zhiqua Zhang et al.

JOURNAL OF ENERGY CHEMISTRY (2020)

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Cationic Polyelectrolytes with Alkylsulfonate Counterions as a Cathode Interface Layer for High-Performance Polymer Solar Cells

Jiamin Duan et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Progress in Materials, Solution Processes, and Long-Term Stability for Large-Area Organic Photovoltaics

Sungmin Park et al.

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Increased Electron Transport and Hole Blocking in an Aqueous Solution Processed Dye-Doped ZnO Cathode Interlayer for High Performance Organic Solar Cells

Yinqi Luo et al.

ACS APPLIED ENERGY MATERIALS (2020)

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Achieving over 16% efficiency for single-junction organic solar cells

Baobing Fan et al.

SCIENCE CHINA-CHEMISTRY (2019)

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Tetrahydroxy-Perylene Bisimide Embedded in Zinc Oxide Thin Film as Electron Transporting Layer for High Performance Non-Fullerene Organic Solar Cells

Xinbo Wen et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

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Boosting Organic-Metal Oxide Heterojunction via Conjugated Small Molecules for Efficient and Stable Nonfullerene Polymer Solar Cells

Hooray Liu et al.

ADVANCED ENERGY MATERIALS (2019)

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Molecular Engineering on Bis(benzothiophene-S,S-dioxide)-Based Large-Band Gap Polymers for Interfacial Modifications in Polymer Solar Cells

Guiting Chen et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

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12.5% Flexible Nonfullerene Solar Cells by Passivating the Chemical Interaction Between the Active Layer and Polymer Interfacial Layer

Sixing Xiong et al.

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A Printable Organic Cathode Interlayer Enables over 13% Efficiency for 1-cm2 Organic Solar Cells

Qian Kang et al.

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Highly stable Al-doped ZnO by ligand-free synthesis as general thickness-insensitive interlayers for organic solar cells

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Alkali Salt-Doped Highly Transparent and Thickness-Insensitive Electron-Transport Layer for High-Performance Polymer Solar Cell

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N-Type Self-Doped Water/Alcohol-Soluble Conjugated Polymers with Tailored Energy Levels for High-Performance Polymer Solar Cells

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Polymer with a 3D conductive network: a thickness-insensitive electron transport layer for inverted polymer solar cells

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Finely Tuned Composition in Conjugated Polyelectrolytes for Interfacial Engineering of Efficient Polymer Solar Cells

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Polymerized Naphthalimide Derivatives as Remarkable Electron-Transport Layers for Inverted Organic Solar Cells

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