Question

In an intrinsic semiconductor tue density of conduction electron is 7.07×10 to power 15 m—³ is doped with indium the density of holes becomes 5×10²² m–3 find the density of conduction electron in doped semiconductor?

Answer 1

Answer:

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Explanation:

The calculation of the electron density starts by assuming that the semiconductor is neutral so that there is a zero charge density in the material. The hole concentration in equilibrium is written as a function of the electron density by using the mass action law.00

Answer 2

The density of conduction electron in doped semiconductor is zero.

Explanation:

Given that,

Density of conduction electron $\rho_{e}=7.07\times10^{15}\ m^3$

Density of holes $\rho_{h}=5\times10^{22}\ m^3$

We need to calculate the density of conduction electron in doped semiconductor

We are assuming that the semiconductor is neutral so the charge density is zero in the material.

The hole concentration is written as a function of the electron density in equilibrium by using mass action law.

Mass action law :

Mass action law is describe the relation between the concentrations of electrons and holes in equilibrium,

Hence, The density of conduction electron in doped semiconductor is zero.

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Topic : semiconsuctor

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