Module 1 : Introduction to materials

Lecture 5 : Graphene: Fundamentals and Applications

 

Introduction

Properties of graphene

- Electronic properties
- Thermal properties
- Mechanical properties
- Optical properties
- Relativistic charge carriers
- Anomalous quantum Hall effect

Electronic properties

- High electron mobility (at room temperature ~ 200.000 cm2/(V·s), ex. Si at RT~ 1400 cm2/(V·s), carbon nanotube: ~ 100.000 cm2/(V·s), organic semiconductors (polymer, oligomer): <10 cm2/(V·s)

- Resistivity of the graphene sheet ~106 Ω·cm, less than the resistivity of silver (Ag), the lowest resistivity

substance known at room temperature (electrical resistivity is also as the inverse of the conductivity σ ( sigma ), of the material, or