1. a) A semiconductor sample of Si at 300 K, of width 0.01 cm, length 0.1 cm and thickness 0.001 cm, is provided with contacts as required for Hall - Effect measurements and is placed in a 1 x 101T magnetic field. When a potential of 15.0 V is applied along the sample, a current of 0.75 mA is observed. If a Hall voltage of - 5.48 mV develops, determine the majority carrier concentration in m3. b) Are the majority carriers electrons or holes? c) Is this semiconductor n-type or p-type? d) Has the sample been doped with donors or acceptors? e) Determine Ec- EF, in eV. f) Use the semiconductor equation calculate the minority carrier concentration in this sample. g) What is the probability of an electron occupying an energy state at the bottom of the conduction band in this sample?

1. a) A semiconductor sample of Si at 300 K, of width 0.01 cm, length 0.1 cm and thickness 0.001 cm, is provided with contacts as required for Hall - Effect measurements and is placed in a 1 x 101T magnetic field. When a potential of 15.0 V is applied along the sample, a current of 0.75 mA is observed. If a Hall voltage of - 5.48 mV develops, determine the majority carrier concentration in m3. b) Are the majority carriers electrons or holes? c) Is this semiconductor n-type or p-type? d) Has the sample been doped with donors or acceptors? e) Determine Ec- EF, in eV. f) Use the semiconductor equation calculate the minority carrier concentration in this sample. g) What is the probability of an electron occupying an energy state at the bottom of the conduction band in this sample?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter1: Atomic Structure

Section: Chapter Questions

Problem 6RQ: How many valence electrons are generally contained in materials used for insulators?

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