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Micro-patterned deposition of MoS₂ ultrathin-films by a controlled droplet dragging approach.

ABSTRACT: Micropatterning of transition metal dichalcogenide (TMDC) ultrathin-films and monolayers has been demonstrated by various multi-step approaches. However, directly achieving a patterned growth of TMDC films is still considered to be challenging. Here, we report a solution-based approach for the synthesis of patterned MoS₂ layers by dragging a precursor solution droplet with variable velocities across a substrate. Utilizing the pronounced shearing velocity dependence in a Landau-Levich deposition regime, MoS₂ films with a spatially modulated thickness with alternating mono/bi- and few-layer regions are obtained after precursor annealing. Generally, the presented facile methodology allows for the direct preparation of micro-structured functional materials, extendable to other TMDC materials and even van der Waals heterostructures.

SUBMITTER: Pareek D

PROVIDER: S-EPMC8263556 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature

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Micro-patterned deposition of MoS2 ultrathin-films by a controlled droplet dragging approach.

Pareek Devendra D Roach Kathryna G KG Gonzalez Marco A MA Büsing Lukas L Parisi Jürgen J Gütay Levent L Schäfer Sascha S

Scientific reports 20210707 1

Micropatterning of transition metal dichalcogenide (TMDC) ultrathin-films and monolayers has been demonstrated by various multi-step approaches. However, directly achieving a patterned growth of TMDC films is still considered to be challenging. Here, we report a solution-based approach for the synthesis of patterned MoS2 layers by dragging a precursor solution droplet with variable velocities across a substrate. Utilizing the pronounced shearing velocity dependence in a Landau-Levich ...[more]

PMID: 34234194

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