why mobility of electron is proportional to charge of electron
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Explanation:
Mobility is proportional to the average time between two consecutive scattering events (collisions) and is inversely proportional to the effective mass. Electrons and holes are scattered by different types of crystal imperfections, which include phonons, impurities, defects, etc.
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Answer:
In semiconductors excited electron moves from valence band to conduction band. This creates a free electron in conduction band and a hole in valence band. The electrons therefore have better mobility as they have gained excitation energy and are further away from the region of influence of the nucleus.
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