Search any question & find its solution
Question:
Answered & Verified by Expert
Which one of the following elements, when present as an impurity in silicon makes it a p-type semiconductor?
Options:
Solution:
2812 Upvotes
Verified Answer
The correct answer is:
$\mathrm{In}$
When silicon is doped with such an impurity valency of which is less than $4, p$-type semiconductor is obtained.
valency of As, P and Sb is +5 and of In is +3 .
Thus, In is the impurity which when added to $\mathrm{Si}$ gives $p$-type semiconductor.
valency of As, P and Sb is +5 and of In is +3 .
Thus, In is the impurity which when added to $\mathrm{Si}$ gives $p$-type semiconductor.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.