Would there be any advantage to adding `n`-type or `p`-type impurities to copper

Options

A. Yes
B. No
C. May be
D. Data insufficient

Answer

B

Explanation

Pure Cu is already an excellent conductor, since it has a partially filled conduction band, further more, Cu forms a metallic crystal as opposed to the covalent crystals of silicon or germanium, so the scheme of using an impurity of donate or accept an electron does not work for copper. Infact adding impurities to copper decreases the conductivity because an impurity tends to scatter electrons, impeding the flow of current.