When NiO is doped with a small quantity of Li2O
(A) both cation and anion vacancies are generated
(B) Shottky defects are generated
(C) NiO becomes an n-type semiconductor
(D) NiO becomes a p-type semiconductor
Correct answer is (D) NiO becomes a p-type semiconductor
When NiO is doped with a small quantity of Li2O, a Ni2+ can be expected to be replaced by 2Li+ . A decrease in unpaired electrons would make NiO a p-type semiconductor.
