Non-stoichiometric cuprous oxide, Cu२O can be prepared in laboratory. In this oxide, copper to oxygen ratio is slightly less than 2:1. Can you account for the fact that this substance is a p-type semiconductor?
Explanation As the ratio is less than 2:1 ,it shows that positive charge in the molecule is less than negative charge. This means Cu⁺ ions have been replaced by Cu²⁺ ions to maintain electrical neutrality and formation of a hole.So there will be conduction due to the presence of these positive holes. These types of conduction occur in a p-type semiconductor. So, the given substance is a p-type semiconductor.
