Which of the following recombination mechanisms involves int

Which of the following recombination mechanisms involves intermediate states within the bandgap?

A. Shockley-Read-Hall recombination

B. Auger recombination

C. Radiative recombination

D. Both A and E

E. Surface recombination

Solution

Answer:

A. Shockley-Read-Hall recombination

Explanation :

In Shockley -read-hall recombination process electrons moves from the conduction band to the empty state of valence band. Since the transition happens between two stage. This recombination mechanism involves immediate states within the band gap .