
Interpretation: The production of an n-type semiconductor and a p-type semiconductor from pure germanium needs to be explained. The effect of these on electrical conductivity of the pure germanium needs to be explained.
Concept Introduction: The conductors are those materials which can conduct heat or electricity; insulators cannot conduct heat or electricity. The materials having tendency to conduct heat or electricity between conductors and insulators are known as semiconductors. If an impurity is added to a semiconductor, it can create holes by removal of electrons or can add more electrons. If it creates holes, a p-type semiconductor is formed and if electrons are added an n type semiconductor is formed. In both the cases, the conductivity increases as an alternate route can be taken by electrons towards the conduction bands.

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Chapter 16 Solutions
Chemical Principles
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