Q 18:Non–stoichiometric cuprous oxide, Cu2O 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?

Q 18: Non–stoichiometric cuprous oxide, Cu₂O 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?

Solution :–

The charge on Cu will +1 in Cu₂O and in normal compound Cu has + 2 charge . and every 2 ions of Cu +1 will replaced by one ion of Cu +2. The conductance is arise due to these positive holes hence it will form a p type of semiconductor.