Physics · Semiconductor Electronics
A pure Si crystal has 4 × 1028 atoms per m3. It is doped with 1 ppm concentration of antimony. Assuming all dopant atoms are ionized, the number of free electrons available per m3 will be:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 14 × 1020 m-3
- 24 × 1022 m-3✓
- 34 × 1028 m-3
- 44 × 1034 m-3
Correct answer
4 × 1022 m-3
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