Question

To get n-type doped semiconductor, impurity to
be added to silicon should have the following
number of valence electrons
(a) 2 (b) 5
(c) 3 (d) 1

Answer 1

Answer:

Heyaa✌️✌️

To get n-type doped semiconductor, impurity to be added to silicon should have 5 valence electrons.

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Answer 2

Answer:

ANSWER

The addition of small amount of foreign impurity in the host crystal is called as doping. It results in an increase in the electrical conductivity of the crystal. Doping of group 14 elements (such as Si, Ge, etc.) with elements of group 15 (such as As) produces an excess of electrons in the crystals, thus, giving n-types semiconductors. Doping of groups 14 elements with group 13 elements (such as Indium) produces holes (electron deficiency) in the crystals. Thus, p-type semiconductors are produced. Then symbol 'p' indicates flow of positive charge.

So, to get n-type doped semiconductor, impurity to be added to silicon should have 5 valence electrons.

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