Recombination in semiconductor refers to_______
Right Answer is:
Annihilation of holes and electrons
Recombination in semiconductors refers to the annihilation of holes and electrons.
⇒ In an intrinsic semiconductor, electrons and holes are produced continuously on account of thermal agitation.
⇒ Since the electrons and holes move in the crystal in a random manner, there is a possibility of an electron meets a hole.
⇒ The merging of a free electron and a hole is called recombination.
⇒ Recombination in semiconductors refers to the annihilation of holes and electrons.
⇒ At any temperature, the rate of this recombination is equal to the rate of generation of electrons and holes.
⇒ However, an electron for a holed travels some distance before it recombines.
⇒ The average time an electron (or hole) remains free is called its lifetime.