Materials and Components - Engineering

A sample of N type semiconductor has an electron density of 6.25 x 10¹⁸/cm³ at 300 K. If intrinsic concentration of carriers in this sample is 2.5 x 10¹³/cm³ at this temperature, the hole density is

A 10⁶ / cm³

B 10⁸ / cm³

C 10¹⁰ / cm³

D 10¹² / cm³

ANS:B - 10⁸ / cm³

Here, ne*np=ni2.

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