Given below are two statements
Statements I By doping silicon semiconductor with pentavalent material, the electrons density increases.
Statement II The 
-type semiconductor has net negative charge.
In the above statement, choose the most appropriate answer from the options given below.
Text Solution
Verified by ExpertsNOT AVAILABLE
Pentavalent impurities has excess free electrons, so when a silicon semiconductor is doped with pentavalent impurities, the electron density increases. But the whole semiconductor is electrically neutral, therefore net charge on 
-type semiconductor is zero.
Statement I true but Statement II is false.
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