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Variable electronic properties of lateral phosphorene-graphene heterostructures
Xiaoqing Tian1, Lin Liu1, Yu Du1
1College of Physics and Technology and Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen 518060, Guangdong, P. R. China. duyu@szu.edu.cn.
Physical Chemistry Chemical Physics : PCCP
|November 12, 2015
Summary
Lateral phosphorene/graphene heterostructures offer tunable electronic properties. Quantum size effects and electric fields control Dirac Fermions, enabling potential applications in advanced optoelectronic and electronic devices.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Phosphorene and graphene possess a small lattice mismatch, enabling atomically sharp in-plane interfaces.
- Lateral heterostructures offer unique electronic properties due to material synergy.
Purpose of the Study:
- Investigate the electronic properties of phosphorene/graphene lateral heterostructures.
- Explore tunability via quantum size effects and external electric fields.
Main Methods:
- First-principles calculations were employed to study electronic properties.
- Analysis included quantum confinement and external electric field effects.
Main Results:
- Electronic properties are highly tunable by quantum size effects and external electric fields.
- Dirac Fermions with reduced Fermi velocities emerge under strong electric fields.
- Undoped and hydrogen-doped configurations exhibit distinct electronic phases.
Conclusions:
- Phosphorene/graphene heterostructures show significant potential for electronic and optoelectronic devices.
- Graphene serves as an effective electrode for phosphorene.
- Transport characteristics indicate tunneling behavior in graphene/phosphorene/graphene devices.
