Scientists have found that graphite behaves like a semiconductor in ultrafast time scales. The results are of fundamental importance for future electronic devices based on carbon, in which high electrical fields or frequencies are processed.

Why is graphite not a semiconductor?

The conduction of current through graphite is entirely due to these electrons and does not depend on the creation or flow of holes. We can thus conclude that graphite is more of a conductor than a semiconductor.

Is graphite a conductor semiconductor or insulator?

SemiconductorsEdit

In certain condition a semiconductor acts like a conductor. For example charcoal and graphite which are allotrope of Carbon act as conductor, as opposed to diamond, which has a different crystal structure and acts as an insulator.

—Graphene is a semi-metal and is a zero-gap semiconductor (Fig. In addition, bilayer graphene’s electronic band structure changes significantly via the electric field effect, and the semiconducting gap ΔE can be tuned continuously from zero to ≈0.3 eV if SiO2 is used as a dielectric.