Recent progress in organic solar cells (Part I material science)

Science China Chemistry, Journal Year: 2021, Volume and Issue: 65(2), P. 224 - 268

Published: Dec. 27, 2021

Language: Английский

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Organic solar cells using oligomer acceptors for improved stability and efficiency

Nature Energy, Journal Year: 2022, Volume and Issue: 7(12), P. 1180 - 1190

Published: Nov. 10, 2022

Language: Английский

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Recent progress in organic solar cells (Part II device engineering)

Science China Chemistry, Journal Year: 2022, Volume and Issue: 65(8), P. 1457 - 1497

Published: May 26, 2022

Language: Английский

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A New Polymer Donor Enables Binary All‐Polymer Organic Photovoltaic Cells with 18% Efficiency and Excellent Mechanical Robustness

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(35)

Published: July 15, 2022

The development of polymerized small-molecule acceptors has boosted the power conversion efficiencies (PCEs) all-polymer organic photovoltaic (OPV) cells to 17%. However, polymer donors suitable for OPV are still lacking, restricting further improvement their PCEs. Herein, a new donor named PQM-Cl is designed and its performance explored. negative electrostatic potential low average local ionization energy distribution surface enable efficient charge generation transfer process. When blending with well-used acceptor, PY-IT, PQM-Cl-based devices deliver an impressive PCE 18.0% superior fill factor 80.7%, both which highest values cells. relevant measurements demonstrate that films possess excellent mechanical flexible properties. As such, fabricated 16.5% high stability displayed. These results candidate provide insights into design high-efficient

Language: Английский

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A Vinylene‐Linker‐Based Polymer Acceptor Featuring a Coplanar and Rigid Molecular Conformation Enables High‐Performance All‐Polymer Solar Cells with Over 17% Efficiency

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(27)

Published: March 22, 2022

State-of-art Y-series polymer acceptors are typically based on a mono-thiophene linker, which can cause some twisted molecular conformations and thus limit the performance of all-polymer solar cells (all-PSCs). Here, high-performance acceptor vinylene linkers is reported, leads to surprising changes in polymers' conformations, optoelectronic properties, enhanced photovoltaic performance. It found that thiophene or bithiophene (PY-T-γ PY-2T-γ) display significant twisting between end-groups linker units, while vinylene-based (PY-V-γ) exhibits more coplanar rigid conformation. As result, PY-V-γ demonstrates better conjugation tighter interchain stacking, results higher mobility reduced energetic disorder. Furthermore, detailed morphology investigations reveal PY-V-γ-based blend high domain purity fill factor its all-PSCs. With these, efficiency 17.1% achieved all-PSCs, highest reported for binary all-PSCs date. This work vinylene-linker superior unit build with chain conformation, beneficial aggregation efficient

Language: Английский

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All-polymer organic solar cells with nano-to-micron hierarchical morphology and large light receiving angle

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: July 12, 2023

Abstract Distributed photovoltaics in living environment harvest the sunlight different incident angles throughout day. The development of planer solar cells with large light-receiving angle can reduce requirements installation form factor and is therefore urgently required. Here, thin film organic nano-sized phase separation integrated micro-sized surface topology demonstrated as an ideal solution to proposed applications. All-polymer cells, by means a newly developed sequential processing, show magnitude hierarchical morphology facilitated exciton-to-carrier conversion. nano fibrilar donor-acceptor network micron-scale optical field trapping structure combination contributes efficiency 19.06% (certified 18.59%), which highest value date for all-polymer cells. Furthermore, micron-sized also angle. A 30% improvement power gain achieved comparing flat-morphology devices. These inspiring results that cell features are particularly suitable commercial applications distributed due its low requirement.

Language: Английский

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Recent Advances in Single‐Junction Organic Solar Cells

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(37)

Published: July 20, 2022

Single-junction organic solar cells (OSCs) have made significant progress in recent years. Innovations material design and device optimization improved the power conversion efficiencies to over 19 %. In this Minireview, based on advances, we discuss molecular strategies tune absorption spectrum, energy level, intermolecular aggregation as well highlight role of electrostatic potential decreasing loss. Then, introduce latest four types OSCs composed different donor:acceptor combinations: polymer donor:small-molecule acceptor, all-polymer, all-small-molecule, small-molecule donor:polymer acceptor. Finally, challenges practical applications, including cost, stability, multi-function integration, are discussed.

Language: Английский

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Recent progress in organic solar cells based on non-fullerene acceptors: materials to devices

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 10(7), P. 3255 - 3295

Published: Jan. 1, 2022

This review presents the recent progress in organic solar cells based on non-fullerene acceptors, with a wide coverage from material synthesis and processing to interface engineering, device structure, large-area fabrication, stability.

Language: Английский

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Oligomeric Acceptor: A “Two‐in‐One” Strategy to Bridge Small Molecules and Polymers for Stable Solar Devices

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(23)

Published: March 21, 2022

Oligomeric acceptors are expected to combine the advantages of both highly developed small molecular and polymeric acceptors. However, organic solar cells (OSCs) based on oligomers lag far behind due their slow development low diversity. Here, three oligomeric were produced through oligomerization molecules. The dimer dBTICγ-EH achieved best power conversion efficiencies (PCEs) 14.48 % in bulk heterojunction devices possessed a T80 (80 initial PCE) lifetime 1020 h under illumination, which better than that More excitingly, it showed PCEs 16.06 quasi-planar (Q-PHJ) is highest value OSCs using date. These results suggest molecules promising strategy achieve with optimized performance between high efficiency durable stability, offer materials bright future commercial applications.

Language: Английский

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Polymer Acceptors with Flexible Spacers Afford Efficient and Mechanically Robust All‐Polymer Solar Cells

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(6)

Published: Nov. 25, 2021

High efficiency and mechanical robustness are both crucial for the practical applications of all-polymer solar cells (all-PSCs) in stretchable wearable electronics. In this regard, a series new polymer acceptors (PA s) is reported by incorporating flexible conjugation-break spacer (FCBS) to achieve highly efficient mechanically robust all-PSCs. Incorporation FCBS affords effective modulation crystallinity pre-aggregation PA s, achieves optimal blend morphology with donor (PD ), increasing photovoltaic properties particular, an all-PSC based on PYTS-0.3 incorporated 30% PBDB-T PD demonstrates high power conversion (PCE) 14.68% excellent stretchability crack onset strain (COS) 21.64% toughness 3.86 MJ m-3 , which significantly superior those devices without (PYTS-0.0, PCE = 13.01%, 2.70 ). To date, COS highest value PSCs PCEs over 8% any insulating additives. These results reveal that introduction into conjugated backbone feasible strategy simultaneously improve PSCs.

Language: Английский

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