Few-layer thick WS2 nanosheets produced by intercalation/exfoliation route
Source abstract
Abstract
Thin two-dimensional (2D) nanostructures of layered materials are of importance for both science and technology due to their unique properties and promising applications. Few-layer tungsten disulfide (WS2) presents some amazing optoelectronic behaviors that have attracted great interest. In this work, WS2 nanosheets with few-layer (<10 layers) thickness have been successfully produced by Li ions intercalation/exfoliation of bulk WS2 via a solvothermal technique. X-ray diffraction indicates that hexagonal crystal structure of bulk WS2 remains the same after the intercalation/exfoliation treatment. Scanning electron microscopy and transmission electron microscopy characterizations reveal that the exfoliated products are single-crystalline thin nanosheets with high crystallinity. Atomic force microscopy reveals that 8-layer thick WS2 nanosheets can be fabricated by the present approach. Raman phonon modes of the prepared WS2 nanosheets present the redshifts due to their decreased thickness. The work provides a facile and affective route to high-quality WS2 thin 2D nanostructures that would have great potentials for optoelectronics.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: 2D Materials and Applications · MXene and MAX Phase Materials · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
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