ECE Purdue Semiconductor Fundamentals L4.2a: Carrier Transport - Drift Current скачать в хорошем качестве

ECE Purdue Semiconductor Fundamentals L4.2a: Carrier Transport - Drift Current

Table of Contents available below. 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 https://nanohub.org/courses/sfun or on edX at https://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. Table of Contents: 00:00 Lecture 4.2a: Drift Current 00:38 Topics 01:04 Semiconductor in equilibrium 02:51 Semiconductor under bias 03:42 Drift current and drift velocity 05:56 Velocity and electric field 06:39 Velocity and electric field 09:07 Drift velocities in Si 10:35 Drift vs. thermal velocities 11:21 Drift current equations 12:00 Mobility vs. doping 12:47 Ionized impurity scattering 13:33 Crystal lattice at T = 0 K 13:57 Lattice scattering 14:26 Mobility vs. temperature 15:49 Mathiessen's rule 16:37 Velocity vs. electric field 18:56 Velocity vs. electric field 20:07 Current, conductivity, resistivity 21:31 Resistivity vs. doping density 22:14 Our first semiconductor device: The resistor 23:41 Topics 24:01 Relation to general current equation? 24:25 Gradients in the QFL and electric field 25:21 Summary