Phase Engineering of Two-Dimensional Transition Metal Dichalcogenides

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Van der Waals (vdW) materials, including transition metal dichalcogenides (TMDs), are extensively studied for their unique properties.
• Polymorphic phases in TMDs offer distinct electronic band structures and quantum states compared to bulk materials.

Purpose of the Study:

• To explore diverse strategies for inducing and controlling structural phases in TMDs.
• To summarize empirical approaches for phase manipulation in vdW materials.
• To discuss recent progress, challenges, and opportunities in TMD applications.

Main Methods:

• Review of phase-selective synthesis techniques.
• Analysis of post-synthesis treatments for phase control.
• Examination of phase-dependent electronic band structures in TMDs.

Main Results:

• Diverse strategies exist for controlling TMD polymorphic phases.
• Phase engineering significantly alters electrical, physical, and chemical properties.
• Group-VI TMDs serve as a reference, with analysis extended to other TMDs.

Conclusions:

• Phase engineering is crucial for developing novel TMD-based devices.
• Understanding and controlling TMD phases unlocks potential in emerging fields.
• Further research into phase manipulation will drive innovation in vdW materials.