Advantages, challenges and molecular design of different material types used in organic solar cells

Nature Reviews Materials, Journal Year: 2023, Volume and Issue: 9(1), P. 46 - 62

Published: Dec. 15, 2023

Language: Английский

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An efficient alkoxy-substituted polymer acceptor for efficient all-polymer solar cells with low voltage loss and versatile photovoltaic applications

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(14), P. 5191 - 5199

Published: Jan. 1, 2024

All-polymer solar cells with low voltage loss for efficient outdoor and indoor photovoltaics.

Language: Английский

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The Development of Quinoxaline‐Based Electron Acceptors for High Performance Organic Solar Cells

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 19, 2024

In the recent advances of organic solar cells (OSCs), quinoxaline (Qx)-based nonfullerene acceptors (QxNFAs) have attracted lots attention and enabled recorded power conversion efficiency approaching 20%. As an excellent electron-withdrawing unit, Qx possesses advantages many modifiable sites, wide absorption range, low reorganization energy, so on. To develop promising QxNFAs to further enhance photovoltaic performance OSCs, it is necessary systematically summarize reported far. this review, all focused are classified into five categories as following: SM-Qx, YQx, fused-YQx, giant-YQx, polymer-Qx according molecular skeletons. The design concepts, relationships between structure optoelectronic properties, intrinsic mechanisms device discussed in detail. At end, kind materials summed up, direction prospected, challenges faced by given, constructive solutions existing problems advised. Overall, review presents unique viewpoints conquer challenge thus boost OSCs development toward commercial applications.

Language: Английский

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Understanding and Suppressing Non‐Radiative Recombination Losses in Non‐Fullerene Organic Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(35)

Published: May 19, 2023

Abstract Organic solar cells benefit from non‐fullerene acceptors (NFA) due to their high absorption coefficients, tunable frontier energy levels, and optical gaps, as well relatively luminescence quantum efficiencies compared fullerenes. Those merits result in yields of charge generation at a low or negligible energetic offset the donor/NFA heterojunction, with over 19% achieved for single‐junction devices. Pushing this value significantly 20% requires an increase open‐circuit voltage, which is currently still below thermodynamic limit. This can only be by reducing non‐radiative recombination, hereby increasing electroluminescence efficiency photo‐active layer. Here, current understanding origin decay, accurate quantification associated voltage losses are summarized. Promising strategies suppressing these highlighted, focus on new material design, optimization donor–acceptor combination, blend morphology. review aims guiding researchers quest find future harvesting blends, combine yield exciton dissociation radiative free carrier recombination losses, closing gap inorganic perovskite photovoltaics.

Language: Английский

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Recent progress in side chain engineering of Y-series non-fullerene molecule and polymer acceptors

Science China Chemistry, Journal Year: 2023, Volume and Issue: 67(3), P. 788 - 805

Published: Nov. 29, 2023

Language: Английский

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High‐Performance Ternary Organic Solar Cells Enabled by Integrating a 3D‐Shaped Guest Acceptor Derived from Perylene Diimide

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(24)

Published: March 4, 2023

Abstract Integrating a third component into the binary system is considered to be one of most effective strategies further enhance power conversion efficiency (PCE) in organic solar cells (OSCs). Here, novel perylene diimide (PDI) derivative featuring 3D structure, TPA‐4PDI, with tetraphenyladamantane central core developed as guest electron acceptor incorporated PM6:Y6 system. The champion PCE ternary OSC recorded 18.29% by adding 7.5 wt.% TPA‐4PDI blend, which photovoltaic performance enhanced synergistically increased open‐circuit voltage ( V oc ) 0.849 V, short‐circuit current density J sc 27.55 mA cm −2 , and fill factor (FF) 78.21%. exhibits complementary absorption band PM6 Y6 while its lowest unoccupied molecular orbital (LUMO) energy level falls between two host materials. addition can effectively suppress recombination behavior, inhibit excessive aggregation improve morphology blend. All these effects function then lead enhancement oc, FF OSCs. This study suggests that developing PDI derivatives an method

Language: Английский

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Exploring the Electronic, Optical, and Charge Transfer Properties of A-D-A-Type IDTV-ThIC-Based Molecules To Enhance Photovoltaic Performance of Organic Solar Cells

ACS Omega, Journal Year: 2023, Volume and Issue: 8(48), P. 45384 - 45404

Published: Nov. 22, 2023

Improving the charge mobility and optoelectronic properties of indacenodithiophene-based small molecule acceptors is a key challenge to improving overall efficiency. In this current research, seven newly designed molecules (DT1-DT7) comprising core are presented tune energy levels, enhance mobility, improve photovoltaic performance IDTV-ThIC via density functional theory. All were by end-capped modification substituting terminal with strong electron-withdrawing moieties. Among all examined structures, DT1 has proved itself superior in multiple aspects, including higher λmax chloroform (787 nm) gaseous phase (727 nm), narrow band gap (2.16 eV), electron affinity (3.31 least excitation (1.57 improved due low reorganization excited state lifetime (2.37 ns) when compared reference (IDTV-ThIC) other molecules. DT5 also showed remarkable improvement different parameters, such as lowest exciton binding (0.41 leading easier moveability. The open-circuit voltage DT4 makes them proficient exhibiting transfer phenomenon. enlightened outcomes these can pave new route develop efficient organic solar cell devices using molecules, especially DT1, DT4, DT5.

Language: Английский

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High‐Efficiency Organic Solar Cells Enabled by Chalcogen Containing Branched Chain Engineering: Balancing Short‐Circuit Current and Open‐Circuit Voltage, Enhancing Fill Factor

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(19)

Published: Feb. 13, 2023

Abstract The elaborate balance between the open‐circuit voltage ( V OC ) and short‐circuit current density J SC is critical to ensure efficient organic solar cells (OSCs). Herein, chalcogen containing branched chain engineering employed address this dilemma. Three novel nonfullerene acceptors (NFAs), named BTP‐2O , BTP‐O‐S BTP‐2S featuring different peripheral chains are synthesized. Compared with symmetric grafting two alkoxy or alkylthio chains, asymmetric one shows mediate absorption range, applicable miscibility, favorable crystallinity. Benefiting from enhanced π–π stacking charge transport, an optimal power conversion efficiency (PCE) of 17.3% obtained for PM6: ‐based devices, a good (0.912 V) (24.5 mA cm −2 ), high fill factor (FF) 0.775, which much higher than those (16.1%) (16.4%) devices. Such result represents highest efficiencies among binary OSCs surpassing 0.9 V. Moreover, devices fabricated by using green solvent yield satisfactory PCE 17.1%. This work highlights synergistic effect high‐performance alleviating loss enhancing FF.

Language: Английский

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Perylene-diimide for organic solar cells: current scenario and prospects in molecular geometric, functionalization, and optoelectronic properties

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(48), P. 26393 - 26425

Published: Jan. 1, 2023

This review highlights key features of PDA-NFA: molecular design, diverse grafting sites, advanced synthesis, morphology control, and optimized device performance. provides a vision for high-performance PDA-NFA NF-OSCs.

Language: Английский

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Non‐symmetric Half‐Fused B←N Coordinated Diketopyrrolopyrrole Building Block for n‐type Semiconducting Polymers

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(23)

Published: April 6, 2023

The development of conjugated polymers with high semiconducting performance and reliability is great significance for flexible electronics. Herein, we developed a new type electron-accepting building block; i.e., non-symmetric half-fused B←N coordinated diketopyrrolopyrrole (DPP) (HBNDPP), amorphous toward rigid fusion part HBNDPP endows the resulting decent electron transport, while its structure causes polymer to exhibit multiple conformation isomers flat torsional potential energies. Thus, it gets packed in an manner solid state, ensuring good resistance bending strain. Combined hardness softness, organic field-effect transistor devices n-type charge properties mobility, resistance, ambient stability. preliminary study makes this block candidate future design materials electronic devices.

Language: Английский

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