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CBSE Class 12-science Answered

How can we say that both n-type semiconductors and p-type semiconductors are electrically neutral?????
Asked by rashiluvsuall | 12 Dec, 2011, 09:53: PM
answered-by-expert Expert Answer
The impurity atoms added to a pure semiconductor to make it n-type or p-type is neutral itself (i.e. pentavalent impurity for n-type and trivalent impurity for p-type. In doping we add only atoms and since they are neutral they are neutral after doping also, and hence the semiconductor as a whole remains electrically neutral.
Answered by | 13 Dec, 2011, 11:26: AM
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