Extrinsic Semiconductor

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Extrinsic Semiconductor: Overview

This topic covers concepts such as Doping and Dopant, Doping, Dopant, Process of Doping, Extrinsic Semiconductor, N-type Semiconductor, Some Important Facts about n-Type Semiconductor, p-Type Semiconductor, etc.

Important Questions on Extrinsic Semiconductor

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Which of the following energy band diagram shows the N-type semiconductor

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Holes are majority carriers in n-type semiconductor while electrons are majority carries in p-type semiconductor.

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The hole density (ηh) and electron density (ne) in p-type semiconductors are related as

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Range of energy required by electron of valance band to move into hole is 0.01-0.05 eV. The accepter energy level lies

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Which of the following energy band diagram shows the N-type semiconductor

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There are two types of dopants,n-type dopants and p-type dopants.

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The energy gap between conduction band and valence band in n-type semiconductor is

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In an n-type semiconductor, majority charge carriers are electrons.

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If ne and nh represent the number density of electrons and holes in extrinsic semiconductor respectively then for p-type semiconductors.

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When Pentavalent atoms are added to pure semiconductor then which type of extrinsic semiconductor is found

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In a p-type semiconductor, there is an _____ in the density of unfilled states.

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The electron and hole concentrations in an intrinsic semiconductor are equal, but in an extrinsic semiconductor, they are not equal.

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In an n-type silicon, which of the following statement is true:

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Doping is done to increase the conductivity of semiconductor.

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In P type semiconductor pentavalent impurities are used for doping while in N type semiconductor trivalent impurities are used for doping.

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Which of the following is an extrinsic semiconductor?

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The electron and hole concentrations in an intrinsic semiconductor are equal, but in an extrinsic semiconductor, they are not equal.