When an $N-$type semiconductor is heated,what happens to the charge carriers?
- ANumber of electrons increases while that of holes decreases
- BNumber of holes increases while that of electrons decreases
- CNumber of electrons and holes remains the same
- DNumber of electrons and holes increases equally
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When phosphorus and antimony are mixed in germanium,then:
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View SolutionStatement-$I$: By doping silicon semiconductor with pentavalent material,the electron density increases.
Statement-$II$: The $n$-type semiconductor has a net negative charge.
In the light of the above statements,choose the most appropriate answer from the options given below:
Statement-$II$: The $n$-type semiconductor has a net negative charge.
In the light of the above statements,choose the most appropriate answer from the options given below:
Suppose a pure $Si$ crystal has $5 \times 10^{28}$ atoms $m^{-3}$. It is doped with $1 \text{ ppm}$ concentration of pentavalent $As$. Calculate the number of electrons and holes. $(n_i = 1.5 \times 10^{16} \text{ m}^{-3})$
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View SolutionIn an $N$-type $Ge$ semiconductor,the mobility of electrons is $5000 \ cm^2/V \cdot s$ and the conductivity is $5 \ mho/cm$. If the effect of holes is negligible,what is the concentration of impurity atoms?
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View Solution$A$ $P-$ type semiconductor can be obtained by adding
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