Feasible Route for a Large Area Few-Layer MoS₂ with Magnetron Sputtering

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Molybdenum disulfide (MoS₂) is a 2D material with significant electronic and optical properties.
• Developing scalable and high-quality synthesis methods for MoS₂ is crucial for its technological applications.

Purpose of the Study:

• To report a continuous and large-area growth method for few-layer MoS₂ films.
• To investigate the effect of radio frequency magnetron sputtering (RFMS) power on MoS₂ film quality.
• To demonstrate a simple yet effective synthesis strategy for high-quality MoS₂.

Main Methods:

• A two-step synthesis approach was employed, starting with RFMS deposition of a MoS₂ film on a SiO₂/Si substrate at 400 °C.
• The deposited film was subsequently sulfurized at 600 °C for 60 minutes.
• Characterization was performed using Raman spectroscopy, X-ray diffractometry, high-resolution field emission transmission electron microscopy, and X-ray photoelectron spectroscopy.

Main Results:

• Continuous and large-area few-layer MoS₂ films were successfully grown on SiO₂/Si substrates.
• The quality of the MoS₂ films, including low disorder and good crystallinity, was confirmed through various characterization techniques.
• Controlling the RFMS power was identified as a key parameter for achieving high-quality few-layer MoS₂.

Conclusions:

• The combination of RFMS and sulfurization presents a viable route for the scalable production of high-quality, few-layer MoS₂.
• This method offers simultaneous physical and chemical enhancement of the thin film quality.
• The demonstrated growth strategy is simple and effective for producing large-area MoS₂ with desirable properties.