Question

Q3. Which type of charge carrier has the greatest.
mobility?​

Answer 1

Answer:

The electron mobilty is often greater than hole mobility because quite often, the electron effective mass is smaller than hole effective mass. The relaxation times are often of the same order of magnitude for electrons and holes and therefore, they do not make too much difference.

Explanation:

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Answer 2

Answer:

Electrons

Explanation:

The formula for Mobility is= q Tau/m*

Where q is the charge, Tau is relaxation time and m* is the effective mass.

From this formula one can observe that the mobility is directly proportional to the charge and Tau and inversely proportional to the effective mass m*.

The effective mass and charge are the material properties and are fixed. The effective mass of the electrons is often smaller than that of other particles. Hence, the mobility of the electrons is highest. The mobility of electrons is about 2-3 times then that of the mobility of the holes.

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