Question

A Si sample contains 1 × 1016/cc In acceptor atoms and certain numbers of shallow donors. The In acceptor level is 0.16eV above EV and EF is 0.26 eV above EV at 300K. How many (/cc) In atoms are un-ionized (i.e., neutral)?

Answer 1

Answer:

6.5 × 10¹⁵/ cm³

Explanation:

Thinking process:

The relation

With the expression Ef - Ei = 0.36 × 1.6 × 10⁻¹⁹

and ni = 1.5 × 10¹⁰

Temperature, T = 300 K

K = 1.38 × 10⁻²³

This generates N₀ = 1.654 × 10¹⁶ per cube

Now, there are 10¹⁶ per cubic centimeter

Hence,

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