Question

What is difference between direct and indirect band gap?

Answer 1

Hay mate here is your answer ✌❤☺

Direct band gap -


In a direct band gap semiconductor, the top of the valence band and the bottom of the conduction band occur at the same value of momentum, as in the schematic below.


Indirect band gap -


In an indirect band gap semiconductor, the maximum energy of the valence band occurs at a different value of momentum to the minimum in the conduction band energy.



Hope it will help you ☺❤