Synthesis of atomically thin sheets by the intercalation-based exfoliation of layered materials

Nature Synthesis, Journal Year: 2023, Volume and Issue: 2(2), P. 101 - 118

Published: Feb. 13, 2023

Language: Английский

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Flexible and stretchable transparent conductive graphene-based electrodes for emerging wearable electronics

Carbon, Journal Year: 2022, Volume and Issue: 202, P. 495 - 527

Published: Nov. 9, 2022

Language: Английский

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Two-Dimensional Violet Phosphorus: A p-Type Semiconductor for (Opto)electronics

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(8), P. 3660 - 3666

Published: Feb. 18, 2022

The synthesis of novel two-dimensional (2D) materials displaying an unprecedented composition and structure via the exfoliation layered systems provides access to uncharted properties. For application in optoelectronics, a vast majority exfoliated 2D semiconductors possess n-type or more seldom ambipolar characteristics. shortage p-type enormously hinders extensive engineering devices for complementary metal oxide (CMOSs) beyond CMOS applications. However, despite recent progress development endowed with behaviors by direct p-doping strategies, finding new structures is still primary importance. Here, we report sonication-assisted liquid-phase violet phosphorus (VP) crystals into few-layer-thick flakes first exploration their electrical optical Field-effect transistors based on VP thin films exhibit transport feature Ion/Ioff ratio 104 hole mobility 2.25 cm2 V-1 s-1 at room temperature. In addition, film-based photodetectors display photoresponsivity (R) 10 mA W-1 response time down 0.16 s. Finally, embedded inverter arrays displays voltage gain ∼17. This scalable production method high quality material combined excellent optoelectronic performances make enticing versatile candidate next-generation more-than-Moore (opto)electronics.

Language: Английский

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Ultrathin Metal–Organic Framework Nanosheets Exhibiting Exceptional Catalytic Activity

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(38), P. 17487 - 17495

Published: Sept. 1, 2022

Two-dimensional (2D) metal-organic framework nanosheets (MONs) or membranes are classes of periodic, crystalline polymeric materials that may show unprecedented physicochemical properties due to their modular structures, high surface areas, and aspect ratios. Yet preparing 2D MONs from multiple components two different types polymerization reaction remains challenging less explored. Here, we report the synthesis MOF films via interfacial polymerization, which involves three active monomers for simultaneous polycondensation polycoordination taking place in a confined interface. The well-defined lamellar structure allowed feasible scalable exfoliation produce free-standing with ratio up 2000:1 ultrathin thickness (∼1.7 nm). pore was revealed by high-resolution TEM images near-atomic precision. imide-linkage provided superior thermal (up 530 °C) good chemical stability pH range 3 12. More importantly, exhibited exceptional catalytic activity reusability hydroboration reactions alkynes, turnover frequency (TOF) reached 41734 h-1, is 2-4 orders magnitude greater than reported homogeneous heterogeneous catalysts.

Language: Английский

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Liquid‐Phase Exfoliation of Nonlayered Non‐Van‐Der‐Waals Crystals into Nanoplatelets

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

Published: April 26, 2022

For nearly 15 years, researchers have been using liquid-phase exfoliation (LPE) to produce 2D nanosheets from layered crystals. This has yielded multiple materials in a solution-processable form whose utility demonstrated applications. It was believed that the of such is enabled by very large bonding anisotropy where strength intralayer chemical bonds much larger than interlayer van der Waals bonds. However, over last five number papers raised questions about our understanding describing LPE nonlayered materials. These results are extremely surprising because, as no gap present provide an easily cleaved direction, compounds requires breaking only Here progress this unexpected new research area examined. The structure and properties nanoplatelets produced reviewed. A unexplained trends found, not least preponderance isotropic exfoliated give high-aspect-ratio nanoplatelets. Finally, applications potential class considered.

Language: Английский

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Printed transistors made of 2D material-based inks

Nature Reviews Materials, Journal Year: 2023, Volume and Issue: 8(10), P. 651 - 667

Published: Aug. 24, 2023

Language: Английский

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Solution-Processable and Printable Two-Dimensional Transition Metal Dichalcogenide Inks

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(9), P. 5795 - 5845

Published: April 19, 2024

Two-dimensional (2D) transition metal dichalcogenides (TMDs) with layered crystal structures have been attracting enormous research interest for their atomic thickness, mechanical flexibility, and excellent electronic/optoelectronic properties applications in diverse technological areas. Solution-processable 2D TMD inks are promising large-scale production of functional thin films at an affordable cost, using high-throughput solution-based processing techniques such as printing roll-to-roll fabrications. This paper provides a comprehensive review the chemical synthesis solution-processable printable ink materials subsequent assembly into applications. We start principles protocols various methods nanosheet crystals solution phase. The depositing solid-state discussed. Then, we these areas including electronics, optoelectronics, others. To conclude, summary key scientific/technical challenges future opportunities is provided.

Language: Английский

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Roadmap on printable electronic materials for next-generation sensors

Nano Futures, Journal Year: 2024, Volume and Issue: 8(3), P. 032001 - 032001

Published: March 22, 2024

Abstract The dissemination of sensors is key to realizing a sustainable, ‘intelligent’ world, where everyday objects and environments are equipped with sensing capabilities advance the sustainability quality our lives—e.g. via smart homes, cities, healthcare, logistics, Industry 4.0, precision agriculture. realization full potential these applications critically depends on availability easy-to-make, low-cost sensor technologies. Sensors based printable electronic materials offer ideal platform: they can be fabricated through simple methods (e.g. printing coating) compatible high-throughput roll-to-roll processing. Moreover, often allow fabrication flexible/stretchable/biodegradable substrates, thereby enabling deployment in unconventional settings. Fulfilling promise for will require device innovations enhance their ability transduce external stimuli—light, ionizing radiation, pressure, strain, force, temperature, gas, vapours, humidity, other chemical biological analytes. This Roadmap brings together viewpoints experts various materials—and devices thereof—to provide insights into status outlook field. Alongside recent innovations, roadmap discusses outstanding challenges pertaining each technology. Finally, points promising directions overcome thus enable ubiquitous world.

Language: Английский

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All‐Printed Ultrahigh‐Responsivity MoS₂ Nanosheet Photodetectors Enabled by Megasonic Exfoliation

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

Published: July 5, 2022

Printed 2D materials, derived from solution-processed inks, offer scalable and cost-effective routes to mechanically flexible optoelectronics. With micrometer-scale control broad processing latitude, aerosol-jet printing (AJP) is of particular interest for all-printed circuits systems. Here, AJP utilized achieve ultrahigh-responsivity photodetectors consisting well-aligned, percolating networks semiconducting MoS2 nanosheets graphene electrodes on polyimide substrates. Ultrathin (≈1.2 nm thick) high-aspect-ratio (≈1 μm lateral size) are obtained by electrochemical intercalation followed megasonic atomization during AJP, which not only aerosolizes the inks but also further exfoliates nanosheets. The incorporation high-boiling-point solvent terpineol into ink critical achieving a highly aligned flat thin-film morphology following as confirmed grazing-incidence wide-angle X-ray scattering atomic force microscopy. Following curing achieved with photonic annealing, yields quasi-ohmic contacts photoactive channels responsivities exceeding 103 A W-1 that outperform previously reported visible-light over three orders magnitude. Megasonic exfoliation coupled properly designed formulations enables superlative optoelectronic properties ultrathin be preserved exploited additive manufacturing

Language: Английский

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All inkjet-printed electronics based on electrochemically exfoliated two-dimensional metal, semiconductor, and dielectric

npj 2D Materials and Applications, Journal Year: 2022, Volume and Issue: 6(1)

Published: Sept. 9, 2022

Abstract Inkjet printing is a cost-effective and scalable way to assemble colloidal materials into desired patterns in vacuum- lithography-free manner. Two-dimensional (2D) nanosheets are promising material category for printed electronics because of their compatibility with solution processing stable ink formulations as well wide range electronic types from metal, semiconductor insulator. Furthermore, dangling bond-free surface enables atomically thin, electronically-active thin films van der Waals contacts which significantly reduce the junction resistance. Here, we demonstrate all inkjet-printed thin-film transistors consisting electrochemically exfoliated graphene, MoS 2 , HfO metallic electrodes, semiconducting channel, high- k dielectric layer, respectively. In particular, layer prepared via two-step; electrochemical exfoliation HfS followed by thermal oxidation process overcome incompatibility insulating crystals. Consequently, 2D various enable high-performance, field-effect mobilities current on/off ratios ~10 cm V −1 s >10 5 respectively, at low operating voltage.

Language: Английский

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