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Non-stoichiometric cuprous oxide, Cu_2O 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 ? |
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Answer» Solution :In `Cu_2O`,the number of`Cu^(+)` IONS have been replaced by `Cu^(2+)` ions. As a result, there is a CATIONIC vacancy in the crystal structure. The electrical neutrality is maintained by presence of `Cu^(2+)` ions that replace `Cu^(+)` ions as a result the hole is created. Thus, the conduction takes place by the presence of hole and HENCE it is p-type semiconductor. |
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