2D Ultrawide Bandgap Semiconductors: Odyssey and Challenges

Small Methods, Journal Year: 2022, Volume and Issue: 6(4)

Published: March 11, 2022

Abstract 2D ultrawide bandgap (UWBG) semiconductors have aroused increasing interest in the field of high‐power transparent electronic devices, deep‐ultraviolet photodetectors, flexible skins, and energy‐efficient displays, owing to their intriguing physical properties. Compared with dominant narrow semiconductor material families, UWBG are less investigated but stand out because propensity for high optical transparency, tunable electrical conductivity, mobility, ultrahigh gate dielectrics. At current stage research, most intensively metal oxides, chalcogenides, halides, nitrides. This paper provides an up‐to‐date review recent research progress on new materials novel The widespread applications, i.e., transistors, photodetector, touch screen, inverter summarized, which employ as either a passive or active layer. Finally, existing challenges opportunities enticing class highlighted.

Language: Английский

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3D self-assembled indium sulfide nanoreactor for in-situ surface covalent functionalization: Towards high-performance room-temperature NO2 sensing

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 645, P. 86 - 95

Published: May 1, 2023

Thiol functionalization of two-dimensional (2D) metal sulfides has been demonstrated as an effective approach to enhance the sensing performances. However, most thiol is realized by multiple-step approaches in liquid medium and depends on dispersity 2D materials. Here, we utilize a three-dimensional (3D) In2S3 nano-porous structure that self-assembled from components nanoreactor, which surface-absorbed molecules chemical residues nanoreactor are used for in-situ covalent functionalization. Such facile heat at 100 °C, leading recombing sulfur vacancies with thiol-terminated groups. The NO2 performances such functionalized investigated room temperature, In2S3-100 exhibits response magnitude 21.5 towards 10 ppm full reversibility, high selectivity, excellent repeatability. high-performance gas sensors can be attributed additional electrons transferring functional group into host, thus significantly modifying electronic band structure. This work provides guideline efficient strategy without external stimulus.

Language: Английский

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Advances in Liquid Metal Printed 2D Oxide Electronics

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

Published: June 10, 2024

Abstract 2D metal oxides (2DMOs) have recently emerged as a high‐performance class of ultrathin, wide bandgap materials offering exceptional electrical and optical properties for area device applications in energy, sensing, display technologies. Liquid printing represents thermodynamically advantageous strategy synthesizing 2DMOs by solvent‐free vacuum‐free scalable method. Here, recent progress the field liquid printed is reviewed, considering how physics Cabrera‐Mott oxidation gives this rapid, low‐temperature process advantages over alternatives such sol‐gel nanoparticle processing. The growth, composition, crystallinity burgeoning set 1–3 nm thick semiconducting, conducting, dielectric are analyzed that uniquely suited fabrication flexible electronics. limitations these strategies considered, highlighting opportunities to amplify impact 2DMO through large‐area printing, design doped alloys, stacking electrostatically engineer new oxide heterostructures, implementation devices gas photodetection, neuromorphic computing.

Language: Английский

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Polydopamine Shell as a Ga³⁺ Reservoir for Triggering Gallium–Indium Phase Separation in Eutectic Gallium–Indium Nanoalloys

ACS Nano, Journal Year: 2021, Volume and Issue: 15(10), P. 16839 - 16850

Published: Oct. 6, 2021

Low melting point eutectic systems, such as the gallium-indium (EGaIn) alloy, offer great potential in domain of nanometallurgy; however, many their interfacial behaviors remain to be explored. Here, a compositional change EGaIn nanoalloys triggered by polydopamine (PDA) coating is demonstrated. Incorporating PDA on surface renders core-shell nanostructures that accompany Ga-In phase separation within nanoalloys. The shell keeps depleting Ga3+ from when synthesis proceeds, leading Ga3+-coordinated and smaller nanoalloy. During this process, turn into non-eutectic systems ultimately result solidification In Ga fully depleted. reaction PDA-coated with nitrogen dioxide gas presented an example for demonstrating functionality hybrid composites. concept phase-separating polymeric reservoirs, may lead tailored materials can explored variety post-transition metals.

Language: Английский

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Enhanced Piezoelectric Properties Enabled by Engineered Low-Dimensional Nanomaterials

ACS Applied Nano Materials, Journal Year: 2022, Volume and Issue: 5(9), P. 12126 - 12142

Published: July 14, 2022

Today's electronic products are moving toward personal, portable, and flexible electronics with the integration of multifunctional sensors self-powering technologies. Consequently, efficient high-performance mechanical–electronic interfaces will be heavily considered in development future electronics. Piezotronic materials active components for conversion mechanical stimuli to electrical signals vice versa. In particular, low-dimensional (LD) offer greater efficiencies piezoelectric than their bulk counterparts. Piezoelectric LD have attracted significant attention because successful miniatured The origin responses is ascribed as a loss centrosymmetry inversion center. However, challenges exist utilizing full potential, including effective charge separation upon external imperfections crystal structures. Therefore, considerable efforts been devoted engineering by rational structural design chemical modification further improve performances. Herein, we comprehensively review recent advances technologies on scale zero-dimensional (0D), one-dimensional (1D), two-dimensional (2D), which mainly focused creating defects, doping, forming Janus structures heterointerfaces other materials. Meanwhile, relationships between morphological, physicochemical, engineered performances systematically discussed. Finally, present prospect challenge field research direction, aiming inspire more achieving sensors, actuators, micro- nanoelectromechanical systems.

Language: Английский

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Atomically Thin Antimony‐Doped Indium Oxide Nanosheets for Optoelectronics

Advanced Optical Materials, Journal Year: 2022, Volume and Issue: 10(20)

Published: July 14, 2022

Abstract Wide bandgap semiconducting oxides are emerging as potential 2D materials for transparent electronics and optoelectronics. This fuels the quest discovering new metal with ultrahigh transparency high mobility. While former can be achieved by reducing thickness of oxide films to only a few nanometers, latter is more commonly realized intentional doping. article reports one‐step synthesis few‐unit‐cell‐thick laterally large antimony‐doped indium (IAO). The doping process occurs spontaneously when grown on surface molten Sb–In alloy IAO nanosheets easily printed onto desired substrates. With thicknesses at atomic scale, these exhibit excellent exceeding 98% across visible near‐infrared range. Field‐effect transistors based low‐doped reveal electron mobility ≈40 cm 2 V −1 s . Additionally, notable photoresponse observed in IAO‐based photodetectors under ultraviolet (UV) radiation. Photoresponsivities highly doped wavelength 285 nm found 1.2 × 10 3 0.7 A W , respectively, identifying promising candidates fabrication high‐performance optoelectronics UV region.

Language: Английский

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Recent advances of emerging tin disulfide for room temperature gas sensing

Rare Metals, Journal Year: 2023, Volume and Issue: 42(12), P. 3897 - 3913

Published: Nov. 4, 2023

Language: Английский

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Liquid Metal Doping Induced Asymmetry in Two‐Dimensional Metal Oxides

Small, Journal Year: 2024, Volume and Issue: 20(27)

Published: Jan. 23, 2024

Abstract The emergence of ferroelectricity in two‐dimensional (2D) metal oxides is a topic significant technological interest; however, many 2D lack intrinsic ferroelectric properties. Therefore, introducing asymmetry provides access to broader range materials within the family. Here, generation SnO by doping material with Hf 0.5 Zr O 2 (HZO) demonstrated. A liquid process as strategy for preparation HZO‐doped robust characteristics implemented. This technology takes advantage selective interface enrichment molten Sn HZO crystallites. Molecular dynamics simulations indicate strong tendency and atoms migrate toward surface embed themselves growing oxide layer form HZO. Thus, metal‐based harvesting/doping technique feasible approach devised producing novel induced properties, represents development prospects random‐access memories.

Language: Английский

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A toolbox for investigating liquid metal systems

Cell Reports Physical Science, Journal Year: 2024, Volume and Issue: 5(2), P. 101820 - 101820

Published: Feb. 1, 2024

The exceptional properties of liquid metals at room temperature, such as their fluidity, stretchability, deformability, and potential applications, have rapidly inspired the scientific community. At present, main challenge is overcoming technical barriers associated with characterization metal systems, which resulted in molecular structure remaining effectively unknown. This lack knowledge has significantly hampered progress emerging field chemistry, prohibiting tailored design relegating researchers to work by trial error. In recent years, several technological developments, including improved analytical tools, emerged that tackle current challenges. this review, we present a comprehensive appraisal various state-of-the-art techniques can help uncover answers long-standing questions domain metal-in-metal colloidal systems. We describe selected generic methodologies unique approaches capture changes physical chemical behavior molten presence internal external stimuli. combination, outlined tools will deepen our understanding chemistry accelerate research translation provide solutions areas catalysis, biomedicine, reconfigurable electronics.

Language: Английский

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Gallium-based liquid metals as reaction media for nanomaterials synthesis

Nanoscale, Journal Year: 2024, Volume and Issue: 16(14), P. 6915 - 6933

Published: Jan. 1, 2024

Gallium-based liquid metals (LMs) and their alloys have gained prominence in the realm of flexible stretchable electronics. Recent advances expanded interest to explore electron-rich core interface LMs synthesize various nanomaterials, where Ga-based serve as versatile reaction media. In this paper, we delve into latest developments within burgeoning field. Our discussion begins by elucidating unique attributes that render them suitable media, including high metal solubility, low standard reduction potential, self-limiting oxidation ultra-smooth "layer" surface. We then provide a comprehensive categorized summary utilizing these features fabricate variety pure metallic materials (metal alloys, crystals, porous metals, high-entropy single atoms), metal-inorganic compounds (2D oxides, 2D inorganic graphitic materials), well metal-organic composites (metal-organic frameworks). This paper concludes discussing current challenges field exploring potential future directions. The versatility properties are poised play pivotal role nanomaterial science, paving way for more efficient, sustainable, innovative technological solutions.

Language: Английский

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