Question

A semiconductor has an electron concentration of $8\times 10^{13} / \mathrm{m}^{3}$ and hole concentration of $5.5\times 10^{12} / \mathrm{m}^{3}$. The semiconductor is

• A. $n$-type
• B. $p$-type
• C. intrinsic semiconductor
• D. $p$-$n$ junction

Hint:

In $n$-type semiconductor, electrons are majority carriers.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
In $n$-type semiconductors, electrons are majority carriers.
Step 2: Detailed Explanation:
Electron concentration ($n_e = 8 \times 10^{13}$) is greater than hole concentration ($n_h = 5.5 \times 10^{12}$). Hence, it is an $n$-type semiconductor.
Step 3: Final Answer:
The semiconductor is $n$-type.