NEET 2008 Physics question
Not in JEE Advanced syllabus
With which one of the following elements silicon should be doped so as to give p-type of semiconductor?
Answer: (1)
Solution
A p-type semiconductor is obtained by doping a tetravalent semiconductor (silicon) with a trivalent (acceptor) impurity. Each trivalent atom leaves one bond incomplete, creating a hole. Boron (group 13) is trivalent,
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