In an intrinsic semiconductor at room temperature, the concentration o…

Question

In an intrinsic semiconductor at room temperature, the concentration of electrons equals:

Accepted Answer

D. Concentration of holes (n = p = n_i)

**Intrinsic semiconductor:** pure, no dopants.
Thermal excitation creates electron-hole pairs in equal numbers.
n = p = n_i (intrinsic carrier concentration).
**For Si at 300K:** n_i ≈ 1.5 × 10¹⁰ /cm³.

Answer

Number of donors

Answer

Number of atoms

Answer

Zero

In an intrinsic semiconductor at room temperature, the concentration of electrons equals:

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