Non-stoichiometric cuprous oxide, Cu 2 O can be prepared in the laboratory. In this oxide, the copper to oxygen ratio is slightly less than 21. Can you account for the fact that this substance is a p-type semiconductor?

Options

1. ADue to the excess of copper, there are extra electrons creating an excess of negative charge, making it a p-ty
2. BDue to the excess of copper, there are extra holes creating an excess of positive charge, making it a p-type s
3. CDue to the deficiency of copper, there are extra electrons creating an excess of negative charge, making it a
4. DDue to the deficiency of copper, there are extra holes creating an excess of positive charge, making it a p-ty