CBSE 2023 · Region 1 · Set 1 · Q24 · 2 marks
Differentiate between intrinsic and extrinsic semiconductors.Draw the circuit arrangement for studying the V-I characteristics of a p-n junction diode in forward bias and reverse bias. Show the plot of $\displaystyle \mathrm{V}-\mathrm{I}$ characteristic of a silicon diode.
Differentiate between intrinsic and extrinsic semiconductors.
Draw the circuit arrangement for studying the V-I characteristics of a p-n junction diode in forward bias and reverse bias. Show the plot of $\displaystyle \mathrm{V}-\mathrm{I}$ characteristic of a silicon diode.
Marking-scheme solution
| (a) \begin{tabular}[t]{|l|l|} \multicolumn{2}{|l|}{Difference between intrinsic and extrinsic semiconductor 2} | |
| Intrinsic semiconductor | Extrinsic semiconductor |
| 1. Pure semiconductor. | Semiconductor is Doped with impurities. |
| 2. Low conductivity at room temperature. | High conductivity at room temperature. |
| 3. \(\displaystyle \mathrm{n}_{\mathrm{e}}=\mathrm{n}_{\mathrm{h}}\) | \(\displaystyle \mathrm{n}_{\mathrm{e}} \neq \mathrm{n}_{\mathrm{h}}\) |
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