Siloxane-induced robust photoactive materials with high humidity tolerance for ambient processing of organic solar cells

Article Energy & Fuels

Metal oxide barrier layers for terrestrial and space perovskite photovoltaics

Ahmad R. Kirmani et al.

Summary: Researchers have discovered a silicon oxide that can protect perovskite photovoltaics from damage caused by protons, alpha particles, and atomic oxygen, improving their reliability for space applications.

NATURE ENERGY (2023)

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Article Chemistry, Physical

In Situ Removable Additive Assisted Organic Solar Cells Achieving Efficiency over 19% and Fill Factor Exceeding 81%

Lingchen Kong et al.

Summary: Additive engineering is crucial for the development of organic solar cells (OSCs) as it allows precise regulation of the active layer morphology. In this study, solid additives with low melting points were comprehensively investigated and compared for their effects on OSC performance. The results showed that one of the additives, 1-chloro-4-iodobenzene (CIB), had the most significant enhancements on the absorption coefficients and carrier transports, leading to higher power-conversion efficiencies (PCEs) in OSCs. Furthermore, CIB also showed universality as an in situ removable additive, producing remarkable PCEs in various active layer compositions.

ADVANCED ENERGY MATERIALS (2023)

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Article Chemistry, Multidisciplinary

Restrained energetic disorder for high-efficiency organic solar cells via a solid additive

Zhihao Chen et al.

Summary: In this study, 1,3,5-trimethoxybenzene (TMB) was incorporated as a solid additive to restrict energetic disorder and achieve high efficiency in organic solar cells. TMB showed strong electrostatic interaction with the terminal groups of non-fullerene acceptors (NFAs), facilitating face-to-face packing. It acted as a bridge during film formation to connect adjacent NFAs, and a controlled pi-pi stacking distance was obtained after volatilization. The optimized morphology limited energetic disorder, leading to enhanced exciton delocalization and reduced non-radiative energy loss. TMB-incorporated binary and ternary devices achieved high efficiencies of 18.61% and 19.30%, respectively. This work provides new insights into morphology optimization and offers inspiration for improving organic solar cell performance.

ENERGY & ENVIRONMENTAL SCIENCE (2023)

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Article Chemistry, Multidisciplinary

Polymer Solar Cells with 18.74% Efficiency: From Bulk Heterojunction to Interdigitated Bulk Heterojunction

Xiaopeng Xu et al.

Summary: By utilizing a sequential solution processing method, a more suitable IHJ nanostructure for organic solar cells has been achieved, leading to an increased power conversion efficiency. The IHJ structure, compared to the BHJ structure, can efficiently dissociate excitons, reduce charge recombination, and facilitate the transport of free electrons and holes through more straightforward pathways, ultimately enhancing performance.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

High-Performance Organic Solar Modules via Bilayer-Merged-Annealing Assisted Blade Coating

Jing-Yuan Fan et al.

Summary: This study develops high-performance organic solar modules using a bilayer-merged-annealing-assisted blade-coating strategy and addresses challenges in large-scale module construction.

ADVANCED MATERIALS (2022)

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Article Polymer Science

Using 3.0 eV Large Bandgap Conjugated Polymer as Host Donor to Construct Ternary Semi-Transparent Polymer Solar Cells: Increased Average Visible Transmittance and Modified Color Temperature

Xuanchen Liu et al.

Summary: The study presents an efficient ternary active layer for semi-transparent organic solar cells. The ternary ST-OSC shows higher visible transmittance and cost-effective advantages without optical engineering.

MACROMOLECULAR RAPID COMMUNICATIONS (2022)

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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)

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Article Chemistry, Multidisciplinary

Regulating phase separation and molecular stacking by introducing siloxane to small-molecule donors enables high efficiency all-small-molecule organic solar cells

Yilin Chang et al.

Summary: Siloxane-based intermolecular compatibility is demonstrated as an efficient method for achieving ordered phase separation morphology and improving the photovoltaic performance of all-small-molecule organic solar cells. The introduction of siloxane in small-molecule donors leads to a nanostructured bicontinuous interpenetrating network with improved exciton dissociation and charge transport. The resulting device exhibits a power conversion efficiency of 16.4%.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

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Article Materials Science, Multidisciplinary

A comparison of the positional effect of difluorination and the synergistic effect of siloxane-terminated side chains on benzodithiophene-based conjugated polymers for efficient photovoltaic application

Qian Wang et al.

Summary: Halogenation is an efficient chemical modification strategy for manipulating energy levels and molecular assembly. However, the positional effect of halogen atoms on polymer donors has been limited. In this study, we synthesized wide bandgap polymer donors with different positions of difluorobenzene groups, and found that the steric hindrance influenced the optical bandgap, energy level, surface energy, and crystallization behavior. By optimizing difluorination and introducing a siloxane-functionalized side chain, the polymer properties were modified, leading to improved photovoltaic performance.

JOURNAL OF MATERIALS CHEMISTRY C (2022)

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Article Nanoscience & Nanotechnology

Delicately Controlled Polymer Orientation for High-Performance Non-Fullerene Solar Cells with Halogen-Free Solvent Processing

Dong Yuan et al.

Summary: This study successfully achieved a polymer orientation transition by controlling the branching point position of the irregular side chain, leading to improved performance of polymer solar cells.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Materials Science, Multidisciplinary

Synthesis and photovoltaic performance of a non-fullerene acceptor comprising siloxane-terminated alkoxyl side chain

Zhuhao Wu et al.

Summary: Side chain engineering is an effective strategy to enhance the photovoltaic performance of non-fullerene acceptors. A novel non-fullerene small molecular acceptor, iIEOSi-4F, with a siloxane-terminated alkoxyl side chain was successfully synthesized, showing promising optical and electronic properties. The combination of siloxane-terminated side chain on both polymer donor and small molecular acceptor demonstrated significantly improved power conversion efficiency in polymer solar cells.

ORGANIC ELECTRONICS (2021)

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Article Nanoscience & Nanotechnology

Introducing Siloxane-Terminated Side Chains in Small Molecular Donors for All-Small-Molecule Organic Solar Cells: Modulated Molecular Orientation and Enhanced Efficiency

Qian Wang et al.

Summary: In this study, three small molecular donors with different numbers of siloxane-terminated side chain were synthesized for all-small-molecule organic solar cells. The addition of two symmetric siloxane-terminated side chains to the central unit resulted in elevated melting and crystalline temperatures, lowered surface energy, and pure face-on orientation when blended with the acceptor Y6. The S35-2Si:Y6 blend showed superior performance with a power conversion efficiency of 13.50%, suggesting the potential of siloxane-terminated side chains in regulating the crystalline ability of small molecular donors for high efficiency ASM-OSCs.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Review Chemistry, Multidisciplinary

Stability, encapsulation and large-area fabrication of organic photovoltaics

Shan Song et al.

Summary: Organic photovoltaics (OPVs) are advantageous for their light weight, low cost, flexibility, but their efficiency and longevity compared to silicon-based photovoltaics are still lacking. Large-area OPVs have lower efficiency and shorter lifespan, restricting their commercial development.

SCIENCE CHINA-CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Replacing alkyl side chain of non-fullerene acceptor with siloxane-terminated side chain enables lower surface energy towards optimizing bulk-heterojunction morphology and high photovoltaic performance

Rihang Qiu et al.

Summary: In this study, two novel NFAs with alkyl and siloxane-terminated side chains were synthesized, showing that the siloxane-terminated side chains could lower surface energy, improve miscibility with polymer donors, and enhance the efficiency of polymer solar cells by controlling the morphology of the BHJ active layers. This side chain engineering strategy has shown great potential in optimizing donor-acceptor blend systems for efficient exciton dissociation and charge transport in PSCs.

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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Article Chemistry, Physical

Over 13.8% efficiency of organic solar cells fabricated by air-processable spontaneously spreading process through water temperature control

Tanya Kumari et al.

Summary: The study found a significant influence of water temperature on the quality of SS films and the performance of solar cells, achieving high efficiency OSC devices through temperature modulation. This strategy can promote the utilization of the SS process in the fabrication of scalable devices of various organic semiconductors.

NANO ENERGY (2021)

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Article Materials Science, Multidisciplinary

Photoactive layer formation in the dark for high performance of air-processable organic photovoltaics

Akihiro Maeda et al.

Summary: Recent progress in organic photovoltaics (OPVs) emphasizes the importance of laboratory-scale fabrication in ambient air using solution processes. However, the effect of the existence of both ambient air and light during the formation of a photoactive layer on the performance of fabricated devices has not been fully elucidated. It was found that photoactive layer formation in completely dark conditions enables air-processable OPVs with a high power conversion efficiency, highlighting the impact of light and air coexistence on device performance.

JOURNAL OF PHYSICS-MATERIALS (2021)

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Article Chemistry, Physical

Binary non-fullerene-based polymer solar cells with a 430 nm thick active layer showing 15.39% efficiency and 73.38% fill factor

Feilong Pan et al.

Summary: This study proposes a solution to the thickness-sensitive fill factor (FF) issue in thick-film polymer solar cells by pairing high-hole mobility polymer donor Si25 with benzotriazole-fused Y-series non-fullerene acceptor Y14. The combined films showed higher electron mobility values and balanced charge transport, leading to improved PSCs performance with reduced FF decay. The results suggest that high mu(h) polymers and benzotriazole-fused Y-series non-fullerene acceptors are promising candidates to overcome the thickness sensitivity of FF.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Nanoscience & Nanotechnology

Introduction of Siloxane-Terminated Side Chains into Semiconducting Polymers To Tune Phase Separation with Nonfullerene Acceptor for Polymer Solar Cells

Qian Wang et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Review Chemistry, Multidisciplinary

Progress in Stability of Organic Solar Cells

Duan Leiping et al.

ADVANCED SCIENCE (2020)

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Review Chemistry, Multidisciplinary

Material perceptions and advances in molecular heteroacenes for organic solar cells

Amaresh Mishra

ENERGY & ENVIRONMENTAL SCIENCE (2020)

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Article Energy & Fuels

Improved Average Figure-of-Merit of High-Efficiency Nonfullerene Solar Cells via Minor Combinatory Side Chain Approach

Dong Yuan et al.

SOLAR RRL (2020)

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Article Chemistry, Multidisciplinary

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

Baobing Fan et al.

SCIENCE CHINA-CHEMISTRY (2019)

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Article Nanoscience & Nanotechnology

Impact of the Siloxane-Terminated Side Chain on Photovoltaic Performances of the Dithienylbenzodithiophene-Difluorobenzotriazole-Based Wide Band Gap Polymer Donor in Non-Fullerene Polymer Solar Cells

Haiying Jiang et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

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Article Multidisciplinary Sciences

Intrinsically stable organic solar cells under high-intensity illumination

Quinn Burlingame et al.

NATURE (2019)

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Article Energy & Fuels

All solution and ambient processable organic photovoltaic modules fabricated by slot-die coating and achieved a certified 7.56% power conversion efficiency

Yi-Ming Chang et al.

SOLAR ENERGY MATERIALS AND SOLAR CELLS (2019)

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Article Materials Science, Multidisciplinary

Dramatically different photovoltaic effect induced by siloxane-terminated combinatory side chain in polymer solar cells

Dong Yuan et al.

SYNTHETIC METALS (2019)

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Article Chemistry, Multidisciplinary

Ambient Processable and Stable All-Polymer Organic Solar Cells

Yalong Xu et al.

ADVANCED FUNCTIONAL MATERIALS (2019)

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Article Chemistry, Multidisciplinary

A multi-objective optimization-based layer-by-layer blade-coating approach for organic solar cells: rational control of vertical stratification for high performance

Rui Sun et al.

ENERGY & ENVIRONMENTAL SCIENCE (2019)

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Review Chemistry, Multidisciplinary

High-performance conjugated polymer donor materials for polymer solar cells with narrow-bandgap nonfullerene acceptors

Chaohua Cui et al.

ENERGY & ENVIRONMENTAL SCIENCE (2019)

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Article Chemistry, Multidisciplinary

The role of fullerenes in the environmental stability of polymer: fullerene solar cells

Harrison Ka Hin Lee et al.

ENERGY & ENVIRONMENTAL SCIENCE (2018)

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Review Optics

Next-generation organic photovoltaics based on non-fullerene acceptors

Pei Cheng et al.

NATURE PHOTONICS (2018)

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Article Multidisciplinary Sciences

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

Chenkai Sun et al.

NATURE COMMUNICATIONS (2018)

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Article Chemistry, Multidisciplinary

Hot slot die coating for additive-free fabrication of high performance roll-to-roll processed polymer solar cells

Seyeong Song et al.

ENERGY & ENVIRONMENTAL SCIENCE (2018)

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Article Multidisciplinary Sciences

Organic and solution-processed tandem solar cells with 17.3% efficiency

Lingxian Meng et al.

SCIENCE (2018)

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Article Polymer Science

Siloxane-Terminated Side Chain Engineering of Acceptor Polymers Leading to Over 7% Power Conversion Efficiencies in All-Polymer Solar Cells

Shizhen Feng et al.

ACS MACRO LETTERS (2017)

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Article Chemistry, Physical

Low band gap conjugated polymers combining siloxane-terminated side chains and alkyl side chains: side-chain engineering achieving a large active layer processing window for PCE > 10% in polymer solar cells

Xuncheng Liu et al.

JOURNAL OF MATERIALS CHEMISTRY A (2017)

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Article Chemistry, Multidisciplinary

Perovskite and Organic Solar Cells Fabricated by Inkjet Printing: Progress and Prospects

Xiaojin Peng et al.

ADVANCED FUNCTIONAL MATERIALS (2017)

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Article Chemistry, Multidisciplinary

A Vinylene-Bridged Perylenediimide-Based Polymeric Acceptor Enabling Efficient All-Polymer Solar Cells Processed under Ambient Conditions

Yikun Guo et al.

ADVANCED MATERIALS (2016)

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Article Chemistry, Multidisciplinary

Bulk-Heterojunction Organic Solar Cells: Five Core Technologies for Their Commercialization

Hongkyu Kang et al.

ADVANCED MATERIALS (2016)

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Article Polymer Science

Crosslinked waterborne polyurethane with high waterproof performance

Fangfang Yu et al.

POLYMER CHEMISTRY (2016)

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Article Nanoscience & Nanotechnology

Stimulation of Wound Healing by Electroactive, Antibacterial, and Antioxidant Polyurethane/Siloxane Dressing Membranes: In Vitro and in Vivo Evaluations

Reza Gharibi et al.

ACS APPLIED MATERIALS & INTERFACES (2015)

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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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Review Chemistry, Multidisciplinary

Recent Advances in Bulk Heterojunction Polymer Solar Cells

Luyao Lu et al.

CHEMICAL REVIEWS (2015)

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Article Chemistry, Physical

A facile approach to alleviate photochemical degradation in high efficiency polymer solar cells

Wenchao Huang et al.

JOURNAL OF MATERIALS CHEMISTRY A (2015)

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Article Multidisciplinary Sciences

Fulleropyrrolidine interlayers: Tailoring electrodes to raise organic solar cell efficiency

Zachariah A. Page et al.

SCIENCE (2014)

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Article Chemistry, Multidisciplinary

Siloxane-Terminated Solubilizing Side Chains: Bringing Conjugated Polymer Backbones Closer and Boosting Hole Mobilities in Thin-Film Transistors

Jianguo Mei et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2011)

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Article Chemistry, Multidisciplinary

An Easily Synthesized Blue Polymer for High-Performance Polymer Solar Cells

Ergang Wang et al.

ADVANCED MATERIALS (2010)

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Article Materials Science, Multidisciplinary

Recombination in polymer-fullerene bulk heterojunction solar cells

Sarah R. Cowan et al.

PHYSICAL REVIEW B (2010)

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Article Chemistry, Multidisciplinary

Spatial Fourier-transform analysis of the morphology of bulk heterojunction materials used in plastic solar cells

Wanli Ma et al.

ADVANCED MATERIALS (2007)

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Review Chemistry, Multidisciplinary

Conjugated polymer-based organic solar cells

Serap Guenes et al.

CHEMICAL REVIEWS (2007)

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Article Chemistry, Multidisciplinary

Solution-processed organic tandem solar cells

Afshin Hadipour et al.

ADVANCED FUNCTIONAL MATERIALS (2006)

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Article Physics, Applied

Light intensity dependence of open-circuit voltage of polymer:fullerene solar cells -: art. no. 123509

LJA Koster et al.

APPLIED PHYSICS LETTERS (2005)

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Siloxane-induced robust photoactive materials with high humidity tolerance for ambient processing of organic solar cells

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