Solution-Processable Electronic-Grade 2D WTe₂ Enabled by Synergistic Dual Ammonium Intercalation.

ABSTRACT: Tungsten ditelluride (WTe₂) exhibits thickness-dependent properties, including magnetoresistance, ferroelectricity, and superconductivity, positioning it as an ideal candidate for nanoelectronics and spintronics. Therefore, the scalable synthesis of WTe₂ with defined thicknesses down to the monolayer limit is crucial for unlocking these properties. Here, we introduce a universal electrolyte chemistry utilizing dual-ammonium compounds to exfoliate WTe₂, enabling precise control over the intercalation stages and flake thicknesses. This approach achieves an 86% exfoliation yield, producing high-quality flakes averaging 2.83 nm in thickness, in which approximately 10% are monolayers. A solution-processed, single-flake device (10 nm thick) exhibits a magnetoresi

SUBMITTER: Yang H 

PROVIDER: S-EPMC12004911 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature