Question

A p-type and n-type semiconductor

can be obtained by doping pure silicon

with ______.

A. Boron and Phosphorus

B. Indium and Sodiuka

C. Sodium and Magnesium

D. Phosphorus and Sodium​

Answer 1

Ans. A

Sol. • An n-type and p-type

semiconductor can obtained by doping

pure silicon with Phosphorus and

Boron.

• Phophorus has 5 valence electrons, so it

will produce n-type semiconductor. Boron

has 3 valence electrons, so it will produce

p-type semiconductor.

• In p-type semiconductors, holes are the

majority carriers and electrons are the

minority carriers. P-type semiconductors

are created by doping an intrinsic

semiconductor with acceptor impurities

(or doping an n-type semiconductor).

• A common p-type dopant for silicon is

boron.

Answer 2

Hola!

Option A is correct

Boron and Phosphorus