Designed Growth of Large-Size 2D Single Crystals

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• The post-Moore's Law era necessitates novel materials for advanced electronics and optoelectronics.
• Two-dimensional (2D) materials offer unique advantages over bulk materials, including atomic thickness and superior properties.
• 2D materials are compatible with complementary metal-oxide semiconductor (CMOS) technologies, promising enhanced logic, storage, and photonic devices.

Purpose of the Study:

• To address the challenge of growing wafer-scale 2D single crystals.
• To provide a systematic understanding of controlled growth techniques for various 2D single crystals.
• To explore future perspectives for designed growth and applications of 2D single crystals.

Main Methods:

• Review of key aspects controlling 2D single crystal growth.
• Analysis of nucleation control strategies.
• Examination of growth promotion, surface engineering, and phase control techniques.

Main Results:

• Identified four critical aspects for controlled 2D single crystal growth: nucleation, promotion, surface engineering, and phase control.
• These aspects can be managed at different stages of the growth process.
• The review highlights the potential for achieving high-quality, uniform 2D materials.

Conclusions:

• Controlled growth of large-size 2D single crystals is essential for massive applications in integrated devices.
• A systematic understanding of growth mechanisms is vital for advancing 2D material technology.
• Designed growth strategies promise a bright future for 2D single crystals in electronics and optoelectronics.