Question

State the features of an n-type semi- conductor.​

Answer 1

Answer:

(1) In an n-type semiconductor, the material is doped with a pentavalent impurity. In this case electrical conduction takes place with electrons as majority charge carriers.

(2) The pentavalent impurity loses an electron and becomes positively charged.

(3) The number of free electrons increases appreciably and the number of holes remains the same as obtained from the source. For an n-type semiconductor, $\sf{n_e >> n_n}$. Thus, free electrons are majority carriers and holes are minority carriers.

(4) These negatively charged free electrons and positively charged holes are available for conduction on applying the potential difference across the semiconductor.

Answer 2

Answer:

Characteristics of n-type Semiconductors:

Each atom of impurity leaves one free electron in the crystal. The electrical conductivity is due to electron set free by the electron. When a potential difference is applied across n-type of semiconductor, the electrons move from a negative end to a positive end

Explanation:

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