Recent Advances and Critical Review on Two-Dimensional Black Phosphorus: Preparation and Optoelectronic Applications

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Two-dimensional black phosphorus (2D BP) is a promising semiconductor material for advanced electronics.
• It possesses unique properties like a layer-dependent bandgap and broadband photoresponse, surpassing limitations of graphene and TMDCs.
• 2D BP offers potential for applications beyond Moore's Law in micro and nanoelectronics.

Purpose of the Study:

• To provide a comprehensive overview of controllable 2D black phosphorus fabrication.
• To summarize recent advancements in 2D BP synthesis and its applications.
• To highlight challenges and future directions for industrial adoption of 2D BP.

Main Methods:

• Review of synthesis strategies for 2D black phosphorus, including small-scale (mechanical/solution exfoliation) and large-scale (CVD, PLD) methods.
• Elucidation of 2D BP crystal structure and physical properties.
• Focus on recent developments in high-speed transistors and broadband photodetectors.

Main Results:

• Categorization of synthesis methods for 2D BP based on production scale.
• Identification of key challenges in large-scale synthesis: oxidation and phosphorus source diffusion.
• Demonstration of 2D BP's potential in high-performance transistors and photodetectors.

Conclusions:

• Addressing challenges in high-temperature oxidation and phosphorus diffusion is crucial for scalable 2D BP synthesis.
• Future industrial applications are expected via CVD and PLD advancements, integrated with silicon processes.
• Controllable fabrication is key to unlocking 2D BP's potential in next-generation electronic devices.