Question

7)Energie gap is Germanium is 0.7eV.

If energie gap of Si is 1.1eV ,among those two,who has higer conductivity?

And 2) can you find ratio of conductivity?

3)how it works in very low temperature?

Answer 1

Energy gap of Germanium = 0.7 ev

Energy gap of silicon = 1.1 ev

Germanium have higher conductivity due to less energy gap than silicon.

Lower the energy gap higher the conductivity.

Ratio of conductivity

Conductivity = 6

Work in Low temperature

At low temperature

Silicon is a semiconductor its energy gap increases so the conductivity decreases.

Germanium is also a semiconductor its energy gap increases but less than silicon so its conductivity is more than silicon