Van Der Waals Force Mediated, Rotationally Aligned Dry-Transfer-Stacking of Two-Dimensional Tungsten Diselenide

Daw, Debottam; Sebait, Riya; Biswas, Chandan

doi:10.3938/jkps.77.884

Cited by 5 publications

(5 citation statements)

References 14 publications

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“…Polycarbonate (PC) has also been used as a clean replacement support for PMMA [68,[158][159][160][161][162][163]. Following its use in CVD-grown graphene layers [68,158], the method has since been extended to the transfer of CVD-grown TMDs [160,161].…”

Section: Other Polymer-assisted Transfermentioning

confidence: 99%

Transfer of large-scale two-dimensional semiconductors: challenges and developments

Watson¹,

Lu²,

Guimarães³

et al. 2021

2D Mater.

109

103

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Two-dimensional (2D) materials offer opportunities to explore both fundamental science and applications in the limit of atomic thickness. Beyond the prototypical case of graphene, other 2D materials have recently come to the fore. Of particular technological interest are 2D semiconductors, of which the family of materials known as the group-VI transition metal dichalcogenides (TMDs) has attracted much attention. The presence of a bandgap allows for the fabrication of high on-off ratio transistors and optoelectronic devices, as well as valley/spin polarized transport. The technique of chemical vapor deposition (CVD) has produced high-quality and contiguous wafer-scale 2D films, however, they often need to be transferred to arbitrary substrates for further investigation. In this review, the various transfer techniques developed for transferring 2D films will be outlined and compared, with particular emphasis given to CVD-grown TMDs. Each technique suffers undesirable process-related drawbacks such as bubbles, residue or wrinkles, which can degrade device performance by for instance reducing electron mobility. This review aims to address these problems and provide a systematic overview of key methods to characterize and improve the quality of the transferred films and heterostructures. With the maturing technological status of CVD-grown 2D materials, a robust transfer toolbox is vital.

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Section: Other Polymer-assisted Transfermentioning

confidence: 99%

Transfer of large-scale two-dimensional semiconductors: challenges and developments

Watson¹,

Lu²,

Guimarães³

et al. 2021

2D Mater.

109

103

View full text Add to dashboard Cite

show abstract

“…97 An automated and inexpensive adhesive-tape exfoliation apparatus yields 3−5% (± 70−90%) areal exfoliation at linear stripping rates of 140 μm/min to 2 cm/min. 98 The area of exfoliated fragments averaged 30−70 μm 2 with similar variability. A cutting and dry-transfer method for creating heterostructures of rotationally aligned WSe 2 flakes was described by Daw et al 99 This method used sacrificial h-BN as a cookie-cutter adhesive to cut and remove WSe 2 flakes and to deposit them onto a WSe 2 substrate after rotat-ing them relative to the crystallographic orientation of the WSe 2 substrate.…”

Section: Top-down Synthesesmentioning

confidence: 82%

Emerging two-dimensional materials: Synthesis, physical properties, and application for catalysis in energy conversion and storage

Xu,

Iqbal,

Wang

et al. 2024

TIMS

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<p>Inorganic, organic, and hybrid two-dimensional (2D) materials are being developed for ever-expanding numbers of applications, though energy and catalysis remain the main drivers of their development. We present overviews of bottom-up and top-down synthetic strategies of such materials and examine manufacturing scalability issues. Mechanical, electrical, and thermal properties and their modulation are highlighted because they are fundamental to the above-mentioned drivers. The burgeoning importance of heterostructures in such materials, particularly for catalysis and electrode design and function is stressed. Detailed attention is given to applications of 2D materials to the electrocatalysis reactions: oxygen reduction, oxygen evolution, hydrogen evolution, carbon dioxide reduction, and nitrogen reduction. Water splitting, carbon dioxide reduction, and nitrogen reduction by photocatalysis are also examined. A perspective of expected advances in the expansion of applications and types of 2D materials, with a focus on heterostructure development, is presented in the conclusion.</p>

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“…We demonstrate that this critical fabrication problem can be solved by using a drop-shaped polydimethylsiloxane (PDMS) stamping tool covered with a poly(bisphenol A carbonate) (PC) film, in the following referred to as the PDMS droplet. Similar droplet tools based on PDMS or other polymers have recently been reported [36][37][38][39][40][41][42]. However, they have not been used for the fabrication of spin valves so far.…”

mentioning

confidence: 82%

CVD bilayer graphene spin valves with 26 $μ$m spin diffusion length at room temperature

Bisswanger,

Winter,

Schmidt

et al. 2021

Preprint

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We present inverted spin-valves fabricated from CVD-grown bilayer graphene (BLG) that show more than a doubling in device performance at room temperature compared to state-of-the art bilayer graphene spin-valves. This is made possible by a PDMS droplet-assisted full-dry transfer technique that compensates for previous process drawbacks in device fabrication. Gate-dependent Hanle measurements show spin lifetimes of up to 5.8 ns and a spin diffusion length of up to 26 µm at room temperature combined with a charge carrier mobility of ≈ 24 000 cm 2 (Vs) −1 for the best device. Our results demonstrate that CVD-grown BLG shows equally good room temperature spin transport properties as both CVD-graphene and even exfoliated single-layer graphene.

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Van Der Waals Force Mediated, Rotationally Aligned Dry-Transfer-Stacking of Two-Dimensional Tungsten Diselenide

Cited by 5 publications

References 14 publications

Transfer of large-scale two-dimensional semiconductors: challenges and developments

Transfer of large-scale two-dimensional semiconductors: challenges and developments

Emerging two-dimensional materials: Synthesis, physical properties, and application for catalysis in energy conversion and storage

CVD bilayer graphene spin valves with 26 $μ$m spin diffusion length at room temperature

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