3) A GaAs semiconductor is doped n-type No-3x1016 cm ³. Within the band gap of the material are 8x10¹5 cm-³ donor defects located energetically below the Fermi level such that only 75% of those defects are populated with carriers. 3a. Are the minority carriers electrons or holes for this material? 3b. What is the total free carrier concentration of this GaAs material? 3c. Where is the Fermi Level for this material relative to the conduction band?
3) A GaAs semiconductor is doped n-type No-3x1016 cm ³. Within the band gap of the material are 8x10¹5 cm-³ donor defects located energetically below the Fermi level such that only 75% of those defects are populated with carriers. 3a. Are the minority carriers electrons or holes for this material? 3b. What is the total free carrier concentration of this GaAs material? 3c. Where is the Fermi Level for this material relative to the conduction band?
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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Step 1: Introduction to Semiconductor Doping and Defects
VIEWStep 2: Are the minority carriers electrons or holes for this material?
VIEWStep 3: What is the total free carrier concentration of this GaAs material?
VIEWStep 4: Where is the Fermi Level for this material relative to the conduction band?
VIEWStep 5: Where is the donor defect trap located relative to the conduction band?
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