Tailoring electronic properties of multilayer phosphorene by siliconization

Area of Science:

• Materials Science
• Condensed Matter Physics
• Computational Chemistry

Background:

• Controlling electronic properties of 2D materials by thickness is crucial for applications.
• Multilayer phosphorene (2D-P) shows significant thickness-dependent electronic behavior.

Purpose of the Study:

• To investigate the formation and properties of siliconized phosphorene (2D-SiPx) compounds.
• To explore methods for tuning electronic properties of 2D materials by controlling thickness and stacking.

Main Methods:

• First-principles computational approach.
• Analysis of electronic band structures and layer-dependent properties.

Main Results:

• Predicted stable 2D-SiP and 2D-SiP2 compounds with weak interlayer interactions.
• Demonstrated tunable semiconductor band gaps by varying thickness and stacking.
• Showcased significantly weaker thickness dependence in 2D-SiPx compared to 2D-P.
• Revealed spatial dependence of electronic properties, with central layers dominating.

Conclusions:

• Siliconization offers a pathway to design 2D materials with tailored electronic properties and reduced thickness sensitivity.
• 2D-SiPx materials present a promising platform for advanced electronic device applications.
• Understanding layer-specific contributions is key to optimizing 2D material performance.