Composition-Tunable Transition Metallic Dichalcogenide Nanosheets by way of a Scalable, Answer-Processable Methodology

The alloying of two-dimensional (2D) transition steel dichalcogenides (TMDs) is a longtime route to supply sturdy semiconductors with constantly tunable optoelectronic properties. Nevertheless, sometimes reported strategies for fabricating alloyed 2D TMD nanosheets will not be appropriate for the cheap, scalable manufacturing of large-area (m²) units. Herein we describe a common technique to afford giant portions of compositionally-tunable 2D TMD nanosheets utilizing commercially out there powders and liquid-phase exfoliation. Starting with Mo_(1–x)W_xS₂ nanosheets, we exhibit tunable optoelectronic properties as a operate of composition. We lengthen this technique to supply Mo_0.5W_0.5Se₂ MoSSe, WSSe, and quaternary Mo_0.5W_0.5SSe nanosheets. Excessive-resolution scanning transmission electron microscopy (STEM) imaging confirms the atomic association of the nanosheets, whereas an array of spectroscopic methods is used to characterize the chemical and optoelectronic properties. This transversal technique represents an necessary step in direction of upscaling tailor-made TMD nanosheets with a broad vary of tunable optoelectronic properties for large-area units.