Selenophene‐fused Perylene Diimide‐Based Cathode Interlayer Enables 19 % Efficiency Binary Organic Solar Cells via Stimulative Charge Extraction

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(37)

Published: July 2, 2024

Abstract The cathode interlayer is crucial for the development of organic solar cells (OSCs), but research on simple and efficient materials lagging behind. Here, a donor‐acceptor (D–A) typed selenophene‐fused perylene diimide (PDI) derivative (SePDI3) developed as material (CIM) OSCs, non‐fused PDI (PDI3) used control CIM comparison. Compared to PDI3, SePDI3 shows stronger self‐doping effect better crystallinity, resulting in charge transport ability. Furthermore, interaction between L8‐BO can form an extraction channel, leading superior behavior. Finally, benefitting from significantly enhanced capacity, SePDI3‐based device displays champion PCE 19.04 % with ultrahigh fill factor 81.65 binary OSCs based PM6 : active layer, which one top efficiencies reported date novel CIMs. Our work prescribes facile effective fusion strategy develop high‐efficiency CIMs OSCs.

Language: Английский

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Designing High-Performance Wide Bandgap Polymer Donors by the Synergistic Effect of Introducing Carboxylate and Fluoro Substituents

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(11), P. 3927 - 3935

Published: Oct. 18, 2022

Controlling the energy levels and aggregation behavior of conjugated polymers is pivotal for constructing high-performance organic solar cells. To achieve this goal, we designed synthesized three D–A alternating wide bandgap (reg-PThE, reg-PThE-1F, reg-PThE-2F) by synergistic introduction carboxylate fluoro substituents. Further investigations demonstrate that reg-PThE-1F:BTP-eC9-4F blend film could form nanoscale phase separation, corresponding devices exhibit improved exciton dissociation charge collection higher more balanced transport mobilities. Hence, an impressive PCE 16.40% can be achieved reg-PThE-1F:BTP-eC9-4F-based devices; especially, PCEs tenary are further to 17.78% or 18.64% adding reg-PThE-1F into different binary systems. These results among highest based on polymer donors with carboxylate-substituted thiophene. Our work paves efficient way designing

Language: Английский

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Coplanar Conformational Structure of π‐Conjugated Polymers for Optoelectronic Applications

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(1)

Published: June 27, 2023

Abstract Hierarchical structure of conjugated polymers is critical to dominating their optoelectronic properties and applications. Compared nonplanar conformational segments, coplanar segments (CPs) demonstrate favorable for applications as a semiconductor. Herein, recent developments in the CPs devices are summarized. First, this review comprehensively summarizes unique planar structures. Second, characteristics conformation terms optoelectrical other polymer physics emphasized. Five primary characterization methods investigating complanate backbone structures illustrated, providing systematical toolbox studying specific conformation. Third, internal external conditions inducing presented, offering guidelines designing Fourth, segment, such light‐emitting diodes, solar cells, field‐effect transistors, briefly Finally, conclusion outlook segment regarding molecular design provided.

Language: Английский

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Naphthodithiophene Diimide (NDTI)‐Based Cathode Interlayer Material Enables 19% Efficiency Binary Organic Solar Cells

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(12)

Published: Dec. 10, 2023

Abstract A fused naphthodithiophene diimide (NDTI) derivative is first used as cathode interlayer materials (CIMs) in organic solar cells, by introducing two dimethylamine‐functionalized fluorenes on both sides, namely NDTI1 . Meanwhile, non‐fused naphthalene (NDI) derivatives are synthesized the control CIMs to validate design strategy of NDI. All three show high thermal stability, robust adhesion, and strong electrode modification capability. Compared with NDI‐based materials, possesses excellent film‐forming capacity crystallinity, simultaneously. Besides, presents a self‐doping effect distinct intermolecular interaction non‐fullerene acceptors. As expected, ‐based OSCs achieve power conversion efficiency (PCE) 18.02% using PM6:Y6 active layer champion PCE 19.01% employing PM6:L8‐BO, which attributed improve charge transport extraction, suppressive recombination. More importantly, retains 91% optimal when film thickness increases from 7 20 nm. Furthermore, also exhibits satisfactory universality for different device stability.

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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Exploring Acceptor-Functionalized Perylenes as Hole Transport Materials for Solution Process Organic Light-Emitting Diodes

ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: 6(5), P. 3874 - 3883

Published: May 10, 2024

The high charge carrier mobility and organized solid-state structure of perylene-based materials enable them to be used in optoelectronics. impressive luminance organic light-emitting diodes (OLEDs) helps improving visibility for both indoor outdoor activities. Considering the good structures, we report three molecular systems viz. PhPrPy, AnPrPy, TPAPrPy, integrated with functionalized pyridines, leading formation donor–acceptor (D–A) which were finally explored as hole transport (HTMs) solution-process OLEDs. pyridine units phenyl, p-methoxyphenyl, triphenylamine functionalities. For theoretical screening, density functional theory was adopted evaluating molecules their optimized geometries, highest occupied orbital/lowest unoccupied orbital energy levels, reorganization energies, electron distribution excited states. energies ionization potentials indicated possible capability transportation. studies revealed that incorporation a unit framework significantly reduced energy. Based on predictions, chose TPAPrPy most promising one device fabrication. fabricated green phosphorescent OLED HTM showed performance power efficacy (PE), current (CE), external quantum efficiency (EQE) ∼77 lm/W, ∼78 cd/A ∼22%, respectively. Given PE, CE, EQE present device, important outcome using balance between low trade-off. Importantly, roll-off observed when measured at brightness 100 1000 cd/m2.

Language: Английский

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Recent advancements in perylene diimide as an electron acceptor in organic solar cells

Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 12(3), P. 838 - 853

Published: Dec. 21, 2023

Interest in alternative powering solutions for the growing internet of things (IoT) has boosted research on third-generation solar cell devices.

Language: Английский

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Surface construction of a novel metal-free g-C3N4-based heterojunction photocatalyst for the efficient removal of bio-toxic antibiotic residues

Applied Surface Science, Journal Year: 2021, Volume and Issue: 571, P. 151299 - 151299

Published: Sept. 23, 2021

Language: Английский

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Ester‐Functionalized Polythiophene Interlayers for Enhanced Performance and Stability of Perovskite Solar Cells

Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: 9(7)

Published: Feb. 4, 2024

Abstract Interfacial defects between the organic–inorganic lead halide perovskite and hole‐transporting layers are one significant factor limiting performance of solar cells (PSCs). These typically result from either or atom vacancies under‐coordinated Pb 2+ atoms, which act as recombination centers for holes. To address this, it is demonstrated that a thin layer poly(bithiophene ester) (PBTE) poly(terthiophene diester) (PTTDE) introduced FA 0.92 MA 0.08 Pb(I Br ) 3 (MA + = methylammonium; formamidinium) spiro‐OMeTAD hole transporting material (HTM) improves device stability power‐conversion efficiency (PCE). The PCE improvements primarily associated with enhanced open‐circuit voltage fill arising Lewis‐base passivation through interaction polymer carbonyl groups, well charge transfer HTM facilitated by conjugated thiophene functionalities polymeric interlayer. Furthermore, examined polymers improve thermal moisture devices. Encapsulated PSCs PBTE PTTDE retain 89 ± 1 94 3% their initial after 1440 h at 65 °C under 0.5‐sun irradiation, respectively, while without interlayer lose almost half performance. results can guide future designs interlayers high‐performance PSCs.

Language: Английский

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PDI derivatives with functional active position as non-fullerene small molecule acceptors in organic solar cells: From different core linker to various conformation

Applied Materials Today, Journal Year: 2020, Volume and Issue: 21, P. 100799 - 100799

Published: Aug. 25, 2020

Language: Английский

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