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Online Course

Semiconductor Fundamentals

Purdue University via edX

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Overview

This course provides the essential foundations required to understand the operation of semiconductor devices such as transistors, diodes, solar cells, light-emitting devices, and more. The material will primarily appeal to electrical engineering students whose interests are in applications of semiconductor devices in circuits and systems. The treatment is physical and intuitive, and not heavily mathematical.

Technology users will gain an understanding of the semiconductor physics that is the basis for devices. Semiconductor technology developers may find it a useful starting point for diving deeper into condensed matter physics, statistical mechanics, thermodynamics, and materials science. The course presents an electrical engineering perspective on semiconductors, but those in other fields may find it a useful introduction to the approach that has guided the development of semiconductor technology for the past 50+ years.

Students taking this course will be required to complete two (2) proctored exams using the edX online Proctortrack software.
Completed exams will be scanned and sent using Gradescope for grading by Professor Lundstrom.

Semiconductor Fundamentals is one course in a growing suite of unique, 1-credit-hour short courses being developed in an edX/Purdue University collaboration. Students may elect to pursue a verified certificate for this specific course alone or as one of the six courses needed for the edX/Purdue MicroMasters program in Nano-Science and Technology. For further information and other courses offered and planned, please see the Nano-Science and Technology page. Courses like this can also apply toward a Purdue University MSECE degree for students accepted into the full master’s program.

Syllabus

Week 1: Materials Properties and Doping

  • Energy levels to energy bands
  • Crystalline, polycrystalline, and amorphous semiconductors
  • Miller indices
  • Properties of common semiconductors
  • Free carriers in semiconductors

Week 2: Rudiments of Quantum Mechanics

  • The wave equation
  • Quantum confinement
  • Quantum tunneling and reflection
  • Electron waves in crystals
  • Density of states

Week 3: Equilibrium Carrier Concentration

  • The Fermi function
  • Fermi-Dirac integrals
  • Carrier concentration vs. Fermi level
  • Carrier concentration vs. doping density
  • Carrier concentration vs. temperature

Week 4: Carrier Transport, Generation, and Recombination

  • The Landauer approach
  • Current from the nanoscale to the macroscale
  • Drift-diffusion equation
  • Carrier recombination
  • Carrier generation

Week 5: The Semiconductor Equations

  • Mathematical formulation
  • Energy band diagrams
  • Quasi-Fermi levels
  • Minority carrier diffusion equation

Taught by

Mark S. Lundstrom, Bikram K. Mahajan and Woojin Ahn

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