Recent Advances in the Growth Strategies, Multifunctional Properties, and Emerging Applications of Two‐Dimensional Non‐van der Waals Bismuth Oxychalcogenides and Prospective Heterostructures

Small Structures, Journal Year: 2024, Volume and Issue: 5(8)

Published: Jan. 29, 2024

With the advent of two‐dimensional (2D) van der Waals (vdW) materials, many non‐van (nvdW) materials have been synthesized and are being exploited for novel applications. Bismuth oxychalcogenides (Bi 2 O X; X is S, Se, Te), a nvdW series with moderate band gap semiconductors, possess high carrier mobility air stability. The layers in Bi stay formal bond, giving rise to distinct structural, optical, thermal, electronic properties different from conventional vdW materials. Herein, these properties, their synthesis, transfer methods 2D examined. photodetector application heterostructure (HS) surveyed special attention Se. Beyond photodetector, other emerging fields, such as gas‐bio sensors, optoelectronic imaging, integrated memory, solar cells, photothermal technology looked over. Based on ongoing research challenges, strategies future innovations presented basics miniaturized In view offsets type HS 94 vdW‐nvdW sets proposed. This review will guide studies meet increasing demands multifunctional applications laboratory industrial scale.

Language: Английский

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Advancements in Optoelectronics: Harnessing the Potential of 2D Violet Phosphorus

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 24, 2024

Abstract Recently, 2D violet phosphorus (VP), a new kind of allotrope has attained significant attention owing to its remarkable electronic, optical, and magnetic characteristics. Tunable, large direct bandgap, high charge carrier mobility, optical absorption make it potential candidate for realizing photoelectronic applications. VP demonstrates unique electronic structure, chemical stability, strong light‐matter interaction, thermal stability that can be utilized assembling intelligent devices. This review article provides comprehensive investigations the latest synthesis techniques employed develop including structural characterizations, degradation mechanisms. Furthermore, this diverse applications in optoelectronics, photodetectors, polarization detection, imaging systems, neuromorphic optoelectronic devices, many others. Finally, challenges future research directions associated with terms optoelectronics are discussed. Overall, as presented, offers an extensive study VP, covering synthesis, insights mechanisms, aim stimulating further development growing field.

Language: Английский

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Efficient Optical Control of Quantum Tunneling Devices Based on Layered Violet Phosphorus

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Abstract Electron tunneling devices attract attention due to their potential applications in integrated circuits, memories, and high‐frequency oscillators. However, limited works are devoted the optical control of electron processes. The main reason is low concentration photogenerated carriers concerning equilibrium values heavy‐doped regions. In this work, violet phosphorus (VP) with a unique bilayer tubular structure supplies an excellent platform for investigating mechanisms under photo illumination. A VP‐based vertical diode made metal‐insulator‐semiconductor (MIS) stacking presented. increase current by ≈4.2 times through illumination, leading considerable rectification ratio. addition, three‐terminal field‐effect transistor (TFET) from VP flake different thicknesses also interband electrons results tunable negative differential transconductance (NDT) at room temperature. photoillumination can modulate onset NDT region variation density states Fermi level alignment channel drain region. These advance understanding transport devices, showing great exploiting novel 2D multifunctional interactions between light carriers’ tunneling.

Language: Английский

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A critical review on black phosphorus and its utilization in the diverse range of sensors

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 377, P. 115719 - 115719

Published: July 19, 2024

Language: Английский

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Photodegradation and van der Waals Passivation of Violet Phosphorus

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(5), P. 422 - 422

Published: Feb. 25, 2024

Violet phosphorus (VP), a novel two-dimensional (2D) nanomaterial, boasts structural anisotropy, tunable optical bandgap, and superior thermal stability compared with its allotropes. Its multifunctionality has sparked widespread interest in the community. Yet, VP's air susceptibility impedes both probing intrinsic features device integration, thus making it of urgent significance to unveil degradation mechanism. Herein, we conduct comprehensive study photoactivated effects on VP. A nitrogen annealing method is presented for effective elimination surface adsorbates from VP, as evidenced by giant surface-roughness improvement 65.639 nm 7.09 nm, enabling direct observation morphology changes induced photodegradation. Laser illumination demonstrates significant thickness-thinning effect manifested remarkable morphological 73% quenching PL intensity within 160 s, implying great potential efficient selected-area etching VP at high resolution. Furthermore, van der Waals passivation using 2D hexagonal boron nitride (hBN) was achieved. The hBN-passivated channel exhibited improved roughness (0.512 nm), reduced photocurrent hysteresis, lower responsivity (0.11 A/W @ 450 nm; 2 μW), effectively excluding adsorbate-induced electrical optoelectrical while disabling Based our experimental results, conclude that three possible factors contribute photodegradation VP: photon energy higher than adsorbed H

Language: Английский

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Coupling Strategies of Multi‐Physical Fields in 2D Materials‐Based Photodetectors

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 9, 2025

2D materials possess exceptional carrier transport properties and mechanical stability despite their ultrathin nature. In this context, the coupling between polarization fields photoelectric has been proposed to modulate physical of materials, including energy band structure, mobility, as well dynamic processes photoinduced carriers. These strategies have led significant improvements in performance, functionality, integration density -based photodetectors. The present review introduces field with four fundamental fields, delivered from dielectric, piezoelectric, pyroelectric, ferroelectric effects, focusing on synergistic mechanisms, distinctive properties, technological merits advanced photodetection applications. More importantly, it sheds light new path material synthesis novel structure design improve efficiency Then, research advances synergy multi-polarization effects effect domain bionic photodetectors are highlighted. Finally, outlines future perspectives materials-based proposes potential solutions address challenges issues area. This comprehensive overview will guide futural applied that capitalizes for sensitive intelligent photodetection.

Language: Английский

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1D Sb₂S₃ with Strong Mie Resonance Toward Highly‐Sensitive Polarization‐Discriminating Photodetection and Its Application in High‐Temperature‐Proof Imaging and Dual‐Channel Communications

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 12(5)

Published: Nov. 5, 2023

Abstract High‐speed and sensitive UV–Vis photodetectors have been constructed based on a typical 1D van der Waals material, antimony sulfide (Sb 2 S 3 ). Impressively, the Sb nanowire photodetector demonstrates pronounced photosensitivity exhibiting remarkable on/off ratio of ≈2800 under power density 318 mW cm −2 . In addition, high responsivity, an outstanding detectivity, short response/recovery time 270 A W −1 , 4.37 × 10 13 Jones, 10/12 ms are achieved. The competitive is associated with intrinsic Mie resonance nanowire, which conducive to enhancing coupling photosensitive channel incident light. By virtue unique structural nature in both extrinsic perspectives, manifest distinct polarization‐discriminating photoresponse optimal dichroic reaching ≈7.2. Moreover, demonstrate stable from room temperature 160 °C, these nanodevices durable against long‐term high‐temperature heating treatment at up 300 °C. Taking advantage excellent thermal robustness, high‐temperature‐proof optoelectronic imaging dual‐channel optical communication applications demonstrated low‐dimensional materials. On whole, this study provides new option for advanced multifunctional system extreme working environments.

Language: Английский

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Memristor based on carbon nanotube gelatin composite film as artificial optoelectronic synapse for image processing

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 676, P. 249 - 260

Published: July 15, 2024

Language: Английский

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Uniaxial Strain Engineering of Anisotropic Phonon in Few‐Layer Violet Phosphorus with High Stretchability for Polarized Sensitive Flexible Photodetector

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(52)

Published: Aug. 27, 2024

Abstract The manifestation of mechanical phenomena in quantum materials at the macroscopic level is intricately linked to pronounced electron‐electron interactions within their lattices, a relationship that becomes especially evident low‐dimensional materials. Violet phosphorous (VP), nascent 2D material distinguished by its unique vertically aligned tubular structures, has garnered considerable attention owing layer‐dependent electronic bandgap, exceptional carrier mobility, and robust air stability. Herein, comprehensive exploration phonon modes exhibited few‐layer VP through an integrated experimental‐theoretical approach, focusing on modulation Raman response under uniaxial strain along ‐axis, b tube direction, respectively, undertaken. Density functional theory calculations highlight when applied ‐ or ‐axis predominantly mitigated rotational adaptations instead change bond length angle, culminating anisotropic response. Moreover, engineering can effectively optimize photoelectric performance VP, including increase responsivity ≈2500% elevate ratio from 2.26 3.38. This investigation not only confirms superior stretchability impact resistance properties cross‐structured but also establishes groundwork for exploring strain‐induced optoelectric VP.

Language: Английский

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Customization of 2D Atomic‐Molecular Heterojunction with Manipulatable Charge‐Transfer and Band Structure

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 27, 2024

Abstract Manipulating the properties of 2D materials through meticulously engineered artificial heterojunctions holds great promise for novel device applications. However, existing research on crucial charge‐transfer interactions and energy profile regulation is predominantly focused van der Waals structures formed via weak forces, limiting regulatory efficiency at high costs. Herein, a refined atomic‐molecular heterojunction strategy featuring strong covalent bonds between organic molecule violet phosphorus (VP) atomic crystal developed, which enables enhanced dynamics customizable band structure molecular level. Both experimentally theoretically, it demonstrated that grafting efficiency, charge redistribution, gap critically depend electronegativity, providing low‐cost yet high‐efficiency effect large scale. As proof concept, VP‐molecular exhibit optimized performance in diverse application domains, presenting general platform future high‐performance

Language: Английский

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