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What is the number of electrons and holes in a pure Si crystal doped by 1 ppm concentration of pentavalent As, given that the crystal has a concentration of 5 × 10 28 atoms m –3 and n i =1.5×10 16 m –3 ?

Options

  1. A6.5 × 10 9 m –3
  2. B5.5 × 10 9 m –3
  3. C3.5 × 10 9 m –3
  4. D4.5 × 10 9 m –3

Correct answer

D. 4.5 × 10 9 m –3

Step-by-step solution

Correct Option is : (D) 4.5 × 10 9 m –3

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