Laser-enabled localized synthesis of Mo1-xWxS2 alloys with tunable composition

Averchenko, A. V.; Salimon, Igor A.; Zharkova, E. V.; Lipovskikh, Svetlana A.; Somov, Pavel A.; Abbas, Omar Adnan; Lagoudakis, Pavlos G.; Mailis, S.

doi:10.1016/j.mtadv.2023.100351

Cited by 4 publications

(11 citation statements)

References 49 publications

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“…In previous reports [ 7 , 8 ], we remarked that a laser thinning process regulates the final thickness of the TMD film, which is associated with the peak intensity of the laser beam. Therefore, we anticipate that it is the variations of the intensity due to optical feedback that lead to the observed thickness variation.…”

Section: Resultsmentioning

confidence: 93%

“…The laser synthesis of MoS 2 , WS 2 , and alloy films (of various compositions) is described in detail in [ 7 , 8 ]. We will, however, outline the process here for clarity.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, we have demonstrated that it is possible to employ a laser-based method to synthesize in situ MoS 2 , WS 2 [ 7 ], which are among the most extensively studied TMDs as well as their alloys (Mo x W 1−x S 2 ) [ 8 ]. This laser-based synthesis method relies on localized thermal decomposition of single-source precursors (a Mo and/or W thiosalts) [ 9 , 10 ] induced by a focused laser beam on a precursor film.…”

Section: Introductionmentioning

confidence: 99%

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Laser-Synthesized 2D-MoS2 Nanostructured Photoconductors

et al. 2023

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The direct laser synthesis of periodically nanostructured 2D transition metal dichalcogenide (2D-TMD) films, from single source precursors, is presented here. Laser synthesis of MoS2 and WS2 tracks is achieved by localized thermal dissociation of Mo and W thiosalts, caused by the strong absorption of continuous wave (c.w.) visible laser radiation by the precursor film. Moreover, within a range of irradiation conditions we have observed occurrence of 1D and 2D spontaneous periodic modulation in the thickness of the laser-synthesized TMD films, which in some cases is so extreme that it results in the formation of isolated nanoribbons with a width of ~200 nm and a length of several micrometers. The formation of these nanostructures is attributed to the effect that is known as laser-induced periodic surface structures (LIPSS), which is caused by self-organized modulation of the incident laser intensity distribution due to optical feedback from surface roughness. We have fabricated two terminal photoconductive detectors based on nanostructured and continuous films and we show that the nanostructured TMD films exhibit enhanced photo-response, with photocurrent yield increased by three orders of magnitude as compared to their continuous counterparts.

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Section: Resultsmentioning

confidence: 93%

“…The laser synthesis of MoS 2 , WS 2 , and alloy films (of various compositions) is described in detail in [ 7 , 8 ]. We will, however, outline the process here for clarity.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Laser-Synthesized 2D-MoS2 Nanostructured Photoconductors

et al. 2023

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“…[ 18 ] Other TMDCs, such as WS 2 have also been successfully synthesized, [ 41,254 ] as well as alloyed TMDCs for tailored optoelectronic properties. [ 255 ] Generally, the processes are mostly based on the thermal decomposition of precursors and resulting chemical reactions, leading to the deposition and writing of the TMDCs. For example, the mechanism for ammonium tetrathiomolybdate conversion into MoS 2 has been generally given by the following chemical reactions: [ 252,253 ]

\begin{equation}{{({\mathrm{N}}{{{\mathrm{H}}}_4})}_2}{\mathrm{Mo}}{{{\mathrm{S}}}_4}\mathop \to \limits^{{\mathrm{\ T\ laser\ }}} 2{\mathrm{N}}{{{\mathrm{H}}}_3} + \ {{{\mathrm{H}}}_2}{\mathrm{S}} + {\mathrm{Mo}}{{{\mathrm{S}}}_3}\end{equation}

\begin{equation}{\mathrm{Mo}}{{{\mathrm{S}}}_3}\mathop \to \limits^{{\mathrm{\ T\ laser\ }}} {\mathrm{S}} + {\mathrm{Mo}}{{{\mathrm{S}}}_2}\end{equation}

…”

Section: Materials For Next‐generation Laser‐processed Electronicsmentioning

confidence: 99%

Direct Laser Writing: From Materials Synthesis and Conversion to Electronic Device Processing

Pinheiro,

Morais,

Silvestre

et al. 2024

Advanced Materials

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Direct Laser Writing (DLW) has been increasingly selected as a microfabrication route for efficient, cost‐effective, high‐resolution material synthesis and conversion. Concurrently, lasers participate in the patterning and assembly of functional geometries in several fields of application, of which electronics stand out. In this review, we survey and outline recent advances and strategies based on DLW for electronics microfabrication, based on laser material growth strategies. First, we summarize the main DLW parameters influencing material synthesis and transformation mechanisms, aimed at selective, tailored writing of conductive and semiconducting materials. Additive and transformative DLW processing mechanisms are discussed, to open space to explore several categories of materials directly synthesized or transformed for electronics microfabrication. These include metallic conductors, metal oxides, transition metal chalcogenides and carbides, laser‐induced graphene, and their mixtures. By accessing a wide range of material types, DLW‐based electronic applications are explored, including processing components, energy harvesting and storage, sensing, and bioelectronics. The expanded capability of lasers to participate in multiple fabrication steps at different implementation levels, from material engineering to device processing, indicates their future applicability to next‐generation electronics, where more accessible, green microfabrication approaches integrate lasers as comprehensive tools.This article is protected by copyright. All rights reserved

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“…These attributes either remain absent in the original TMD materials or exhibit an elevated degree of excellence [1][2][3][4][5]. Their vibrational modes and photoluminescence peaks are affected by the alloying engineering, and this attribute provides a new direction for the application of 2D TMDs alloy materials in hydrogen evolution reaction (HER) [6][7][8], field-effect transistors (FET) [9,10], lithium-sulphur battery catalysis [11,12], and lasers [13,14]. As the exploration of alloyed 2D TMD materials advances, its role in substantiating prospective strides in multifunctional materials for ensuing generation technologies becomes a discernible projection.…”

Section: Introductionmentioning

confidence: 99%

Progress on Two-Dimensional Transitional Metal Dichalcogenides Alloy Materials: Growth, Characterisation, and Optoelectronic Applications

Yu,

Wu,

Zhao

et al. 2023

Nanomaterials

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Two-dimensional (2D) transitional metal dichalcogenides (TMDs) have garnered remarkable attention in electronics, optoelectronics, and hydrogen precipitation catalysis due to their exceptional physicochemical properties. Their utilisation in optoelectronic devices is especially notable for overcoming graphene’s zero-band gap limitation. Moreover, TMDs offer advantages such as direct band gap transitions, high carrier mobility, and efficient switching ratios. Achieving precise adjustments to the electronic properties and band gap of 2D semiconductor materials is crucial for enhancing their capabilities. Researchers have explored the creation of 2D alloy phases through heteroatom doping, a strategy employed to fine-tune the band structure of these materials. Current research on 2D alloy materials encompasses diverse aspects like synthesis methods, catalytic reactions, energy band modulation, high-voltage phase transitions, and potential applications in electronics and optoelectronics. This paper comprehensively analyses 2D TMD alloy materials, covering their growth, preparation, optoelectronic properties, and various applications including hydrogen evolution reaction catalysis, field-effect transistors, lithium-sulphur battery catalysts, and lasers. The growth process and characterisation techniques are introduced, followed by a summary of the optoelectronic properties of these materials.

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Laser-enabled localized synthesis of Mo1-xWxS2 alloys with tunable composition

Cited by 4 publications

References 49 publications

Laser-Synthesized 2D-MoS2 Nanostructured Photoconductors

Laser-Synthesized 2D-MoS2 Nanostructured Photoconductors

Direct Laser Writing: From Materials Synthesis and Conversion to Electronic Device Processing

Progress on Two-Dimensional Transitional Metal Dichalcogenides Alloy Materials: Growth, Characterisation, and Optoelectronic Applications

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