ECE Purdue Semiconductor Fundamentals L2.4: Quantum Mechanics - Electron Waves in Crystal

This video is part of the course "Semiconductor Fundamentals" taught by Mark Lundstrom at Purdue University. The course can be found on nanoHUB.org at nanohub.org/courses/sfun or on edX at www.edx.org/course/semiconduc... .
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.

[@jenny-ht7ng]

great lectures

[@DW-iq8lt]

1:43 Electrons in atoms, 2:07 Electrons in crystal, 4:08 E-k curve with crystal potential, 4:28 Brillouin zone, 6:08 Crystal momentum, 7:45 Bandstructure, 8:52 Parabolic approximation, 11:28 E(k) for electrons in Si, 12:34 Constant energy surfaces, 14:26 Model bandstructure for Si, 15:45 Model bandstructure for GaAs, 17:11 Model bandstructure for graphene

[@mohsentamtaji9130]

Great talk. Thanks

[@scienceisall2632]

The secrets of the universe

[@BlackRockExecutive]

At 4:10, it was mentioned that we can solve the wave equation to obtain the periodic parabolic graph. Is it referring to the Kronig-Penney Model? Or at least is that the simpler alternative to solve the wave equation?

[@fmazzelli5264]

Great lectures. I got confused with the definition of the momentum. What is the definition of momentum for a free particle and what is the definition of crystal momentum?

[@unnikrishnanms3431]

So it means electrons in valence band also travel as waves throughout the crystal ?

[@user-il6ke6dl3q]

[@magnuswootton6181]

TURBOENCABULATOR!!!

[@yaboihitbox9894]

Deez nuts