Materials Science and Engineering B, Journal Year: 2024, Volume and Issue: 309, P. 117665 - 117665
Published: Aug. 26, 2024
Language: Английский
Nature Synthesis, Journal Year: 2025, Volume and Issue: 4(3), P. 327 - 335
Published: Jan. 2, 2025
Abstract Two-dimensional transition metal dichalcogenides (TMDs) exfoliated from bulk layered materials possess interesting properties. Most oxides are not and therefore cannot be exfoliated. Here we report the synthesis of a family ultrathin materials—transition oxychalcogenides (TMOCs)—and demonstrate their unique TMOCs (MX x O y , M = group IV or V metal, X chalcogen, oxygen; 0–2) 2 ) have been fabricated using tetrabutylammonium intercalation. The stoichiometry can adjusted, which enables control optical bandgaps tunability electrical conductivity by more than eight orders magnitude. By tuning chalcogen-to-oxygen ratio along with local atomic structure in TMOCs, it is possible to impart unexpected For example, contrast conventional TMDs, hybrid renders them surprisingly stable electrochemically active strong acids, allowing used as proof-of-concept catalysts for oxygen evolution reaction at pH ≈ 0. HfS 0.52 1.09 catalyst shows high mass activity (103,000 A g −1 an overpotential 0.5 V) exhibits durability proton exchange membrane water electrolysers.
Language: Английский
Citations
2
ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: 6(5), P. 3311 - 3324
Published: April 22, 2024
2D materials showcase numerous distinct optical and electronic characteristics that are incredibly essential for implementation in optoelectronic devices. In the past few years, photodetectors have been a significant focus because of their diverse applications. The challenge lies developing environmentally friendly to fabricate cost-effective, high-performance Bismuth oxychalcogenide nanosheets (Bi2O2X, X = S, Se, Te) form, due impressive theoretical experimental characteristics, become promising alternatives potential applications One its most common oxide phases, i.e., Bi2O5Te, also possesses quite interesting nonlinear optical, photorefractive, many other physical properties, which yet be explored. Here, this study reports based on Bi2O5Te nanomaterials prepared using "microwave-assisted method," an exciting choice synthesizing such bulk. basic characterizations confirmed sample's phase presence constituent elements, whereas microscopic studies demonstrated layered nature. Verification different bonds between atoms is observed Raman studies. Optical represent band edges samples 400 600 nm, as it useful devices solar cells, LEDs, photodetectors. gaps appeared 2.72 2.95 eV range. Centers broad photoluminescence spectra obtained around 650–700 suggests optoelectronics applicability material. Figures merits sensitivity, responsivity, detectivity values from photodetection measurements. Time-dependent photoresponse show high Ion/Ioff ratio, fabricating highly sensitive
Language: Английский
Citations
13
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 7, 2025
Layered anion-mixed oxycompounds have emerged as pivotal materials across diverse technological domains encompassing electronics, optics, sensing, catalysis, and energy applications. Capitalizing on the unique properties imparted by additional anion, these compounds exhibit exceptional characteristics including ultra-large charge carrier mobility, giant second-harmonic generation, visible-light-driven photocatalysis, outstanding thermoelectricity. This article aims to provide a comprehensive summary of layered oxychalcogenides, oxyhalides, oxynitrides, oxypnictides. Organized chemical composition crystal structures, classification precedes an in-depth exploration various synthesis methodologies. Subsequently, their are elucidated in magnetics, ferroelectrics, contextualizing utility electronic, optical, catalytic The review culminates critical assessment extant challenges opportunities within this realm. Furthermore, insights proffered into future trajectory research, underpinning significance advancing novel 2D multi-anion oxygenated attendant
Language: Английский
Citations
1
Physical Chemistry Chemical Physics, Journal Year: 2024, Volume and Issue: 26(15), P. 12231 - 12245
Published: Jan. 1, 2024
Layered metal oxychalcogenide materials have gained significant attention in recent years due to their numerous applications various emerging fields. The bismuth (Bi) based ternary and quaternary become popular excellent potential optoelectronic, thermoelectric, semiconducting applications. Adding copper (Cu) these building matrices has enhanced usefulness ways. In this work, Bi Cu-based layered oxytellurides are synthesized using a unique, rarely used "microwave (MW) assisted method," temperature laser power-dependent Raman measurements carried out. All the samples prepared at same MW power fixed irradiation time. Crystallographic studies show that good crystallinity of matches well with phases reported previously. Nanosheet-like morphology was observed for all samples. optical properties band gap energies were obtained diffuse reflectance spectroscopy technique, which range 1.15-2.52 eV. photoluminescence spectrum shows broad peaks around orange-red regions, indicating applicability optoelectronic effect high on spectra is demonstrated, where appearance different vibrational modes along redshift peak positions increase observed.
Language: Английский
Citations
5
ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 26, 2024
Language: Английский
Citations
4
Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141869 - 141869
Published: Feb. 1, 2025
Language: Английский
Citations
0
ACS Applied Electronic Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 4, 2025
As an emerging two-dimensional (2D) semiconductor material, layered Bi2O2Se exhibits tremendous potential applications in the field of optical devices due to its high electron mobility, exceptional response, and remarkable air stability. In this study, high-quality nanoplates were grown on a fluorophlogopite mica (f-mica) substrate via chemical vapor deposition approach. A two-terminal device is fabricated by traditional beam lithography, which displays linear current–voltage characteristics. The ON/OFF ratio 104 as well n-type maximum responsivity 0.029 W–1 fast photoresponse time 35–42 μs under 638 nm laser illumination are discovered. Spatially resolved scanning photocurrent microscopy conducted, indicates that photothermoelectric effect should be dominant contribution for observed device. This study paves way developing high-performance photoelectron based materials.
Language: Английский
Citations
0
Materials Science and Engineering B, Journal Year: 2024, Volume and Issue: 309, P. 117665 - 117665
Published: Aug. 26, 2024
Language: Английский
Citations
0