A Si wafer has been doped n-type with 10¹7 As atoms cm³. (1) Where is the Fermi level in this sample at room temperature (27 °C) with respect to the Fermi level (EFi) in intrinsic Si? (2) Draw a schematic energy band diagram of the above systems (Indicate the valence band, conduction band, vacuum energy level, Fermi energy level, electron affinity, and work function in the diagram). Locate the Fermi energy level for n-type with As atoms 1017 cm-3 in your drawing. What is the ionization energy of an As atom?

A Si wafer has been doped n-type with 10¹7 As atoms cm³. (1) Where is the Fermi level in this sample at room temperature (27 °C) with respect to the Fermi level (EFi) in intrinsic Si? (2) Draw a schematic energy band diagram of the above systems (Indicate the valence band, conduction band, vacuum energy level, Fermi energy level, electron affinity, and work function in the diagram). Locate the Fermi energy level for n-type with As atoms 1017 cm-3 in your drawing. What is the ionization energy of an As atom?

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter10: Statistical Physics

Section: Chapter Questions

Problem 11P: To obtain a more clearly defined picture of the FermiDirac distribution, consider a system of 20...

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