Organic heterojunctions synergize with biochar as catalytic sites for rapid herbicide degradation under natural light

Surfaces and Interfaces, Год журнала: 2024, Номер 46, С. 104182 - 104182

Опубликована: Март 1, 2024

Язык: Английский

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Synchrotron Radiation‐Based In Situ GIWAXS for Metal Halide Perovskite Solution Spin‐Coating Fabrication

Advanced Science, Год журнала: 2024, Номер unknown

Опубликована: Июль 11, 2024

Abstract Solution‐processable perovskite‐based devices are potentially very interesting because of their relatively cheap fabrication cost but outstanding optoelectronic performance. However, the solution spin‐coating process involves complicated processes, including perovskite droplets, nucleation perovskite, and formation intermediate films, resulting in crystallization pathways for films under annealing. Understanding therefore controlling perovskites is difficult. Recently, synchrotron radiation‐based situ grazing‐incidence wide‐angle X‐ray scattering (GIWAXS) techniques, which possess advantages high collimation, resolution, brightness, have enabled to bridge structure information with device performance by revealing real‐time during process. Herein, developments GIWAXS discussed study perovskites, especially important mechanisms state‐of‐the‐art At end, several potential applications challenges associated techniques highlighted.

Язык: Английский

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Fine-tuning of film morphology through addition of a third component enables organic solar cells with efficiency over 18%

Materials Chemistry Frontiers, Год журнала: 2024, Номер 8(15), С. 2657 - 2665

Опубликована: Янв. 1, 2024

By incorporating an acceptor Y-TNF with a structure analogous to Y6 as the third component, nanofiber of active layer is further optimized, molecular arrangement more ordered, and PCE device reaches 18.1%.

Язык: Английский

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High-Performance PM6:Y6-Based Ternary Solar Cells with Enhanced Open Circuit Voltage and Balanced Mobilities via Doping a Wide-Band-Gap Amorphous Acceptor

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(28), С. 36705 - 36714

Опубликована: Июль 3, 2024

Great progress has been made in organic solar cells (OSCs) recent years, especially after the report of highly efficient small-molecule electron acceptor Y6. However, relatively low open circuit voltage (VOC) and unbalanced charge mobilities remain two issues that need to be resolved for further improvement performance OSCs. Herein, a wide-band-gap amorphous IO-4Cl, which possessed shallower lowest unoccupied molecular orbital (LUMO) energy level than Y6, was introduced into PM6:Y6 binary system construct ternary device. The mechanism study revealed IO-4Cl alloyed with Y6 prevent overaggregation offer dual channels effective hole transportation, resulting balanced mobilities. Taking these advantages, an enhanced VOC 0.894 V improved fill factor 75.58% were achieved optimized PM6:Y6:IO-4Cl-based device, yielding promising power conversion efficiency (PCE) 17.49%, surpassed 16.72% This work provides alternative solution balance PM6:Y6-based devices by incorporating high-performance LUMO A–D–A small molecule as third compound.

Язык: Английский

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Steric hindrance induced low exciton binding energy enables low‐driving‐force organic solar cells

Aggregate, Год журнала: 2024, Номер 5(5)

Опубликована: Июль 2, 2024

Abstract Exciton binding energy ( E b ) has been regarded as a critical parameter in charge separation during photovoltaic conversion. Minimizing the of materials can facilitate exciton dissociation low‐driving force organic solar cells (OSCs) and thus improve power conversion efficiency (PCE); nevertheless, diminishing with deliberate design principles remains significant challenge. Herein, bulky side chain steric hindrance structure was inserted into Y‐series acceptors to minimize by modulating intra‐ intermolecular interaction. Theoretical experimental results indicate that hindrance‐induced optimal interaction enhance molecular polarizability, promote electronic orbital overlap between molecules, delocalized transfer pathways, thereby resulting low . The conspicuously reduced obtained Y‐ChC5 pinpoint modulation detrimental effects on low‐driving‐force OSCs, achieving remarkable PCE 19.1% over 95% internal quantum efficiency. Our study provides new rationale reduce

Язык: Английский

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Design of a photocatalyst combining graphdiyne (g-C_nH_2n−2) nanosheets with a PVP-modified co-metal coordination polymer and its hydrogen-evolution performance

Nanoscale, Год журнала: 2024, Номер 16(30), С. 14498 - 14509

Опубликована: Янв. 1, 2024

Metal coordination polymers are organometallic frameworks in which a metal and an organic ligand linked via dative bond.

Язык: Английский

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Solution-Processed Thin Film Transparent Photovoltaics: Present Challenges and Future Development

Nano-Micro Letters, Год журнала: 2024, Номер 17(1)

Опубликована: Окт. 23, 2024

Electrical energy is essential for modern society to sustain economic growths. The soaring demand the electrical energy, together with an awareness of environmental impact fossil fuels, has been driving a shift towards utilization solar energy. However, traditional solutions often require extensive spaces panel installation, limiting their practicality in dense urban environment. To overcome spatial constraint, researchers have developed transparent photovoltaics (TPV), enabling windows and facades vehicles buildings generate electric Current TPV advancements are focused on improving both transparency power output rival commercially available silicon panels. In this review, we first briefly introduce wavelength- non-wavelength-selective strategies achieve transparency. Figures merit theoretical limits TPVs discussed comprehensively understand status current technology. Then highlight recent progress different types TPVs, particular focus solution-processed thin-film (PVs), including colloidal quantum dot PVs, metal halide perovskite PVs organic PVs. applications also reviewed, emphasis agrivoltaics, smart facades. Finally, challenges future opportunities research pointed out.

Язык: Английский

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Bilayer layer-by-layer structures for enhanced efficiency and stability of organic photovoltaics beyond bulk heterojunctions

Cell Reports Physical Science, Год журнала: 2024, Номер 5(6), С. 102027 - 102027

Опубликована: Июнь 1, 2024

Tuning bulk heterojunctions is an important step for improving organic photovoltaic device performance; however, challenges remain in obtaining sufficient lifetimes using this concept. In work, we report on high-performance PM6/Y7 layer-by-layer devices by carefully tuning the structure and studying effects performance. We demonstrate that optimized can effectively improve photophysical properties of device, resulting a conversion efficiency 16.21%, surpassing heterojunction counterpart. Notably, developed also outperforms traditional terms long-term photostability thermal stability under continuous illumination temperature stress (85°C) approximately 1,000 h, with similar results obtained eight other non-fullerene acceptor systems. The improved these systems ascribed to mitigation strong phase aggregation seen films.

Язык: Английский

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Impact of Solvent-Processing for PM6/Y6 Morphology and Charge transfer in Organic Solar Cells

Journal of Materials Chemistry C, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

In this article, we investigated the local morphology of PM6/Y6 thin films dependent on solvent-treatment approach and calculate charge-transfer, hole-transfer, electron-transfer rates.

Язык: Английский

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Graphdiyne and its heteroatom−doped derivatives for Li−ion/metal batteries

Dalton Transactions, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Recent advancements in the synthetic methods, energy storage applications, and new mechanisms related to Li-ion/metal batteries for carbon GDY its heteroatom-doped derivatives.

Язык: Английский

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