ECE474S09_Lecture22 - ECE 474: Principles of Electronic...

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ECE 474: Principles of Electronic Devices Prof. Virginia Ayres Electrical & Computer Engineering Michigan State University [email protected]
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Lecture 22: Chp. 03: Current State-of-Art Transistors I = q( n μ + p μ ) E , E = electric field (V/cm), μ = mobility (cm cm )
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I = q(n 0 <velocity electron >+ p 0 <velocity hole >) Area I = q(n 0 μ n + p 0 μ p ) E Area J = I/Area = q(n 0 μ n + p 0 μ p ) E = σ E Lecture 21:
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Battery only: what happens? V = IR, R= ρ L /wt Hole motion, electron motion what you’d expect from the +- terminals of the battery I = q(n 0 μ n + p 0 μ p ) E Area + -
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Battery only: what happens? V = IR, R= ρ L /wt Hole motion, electron motion what you’d expect from the +- terminals of the battery I = q(n 0 μ n + p 0 μ p ) E Area New: F = q E + -
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Battery only: what happens? V = IR, R= ρ L /wt Hole motion, electron motion what you’d expect from the +- terminals of the battery I = q(n 0 μ n + p 0 μ p ) E Area New: F = q E F x = q E x + - +z +y +x
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Magnetic field B + battery: what happens?
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This note was uploaded on 06/26/2010 for the course ELECTRICAL ECE474 taught by Professor Tran-le,j during the Spring '10 term at Michigan State University.

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ECE474S09_Lecture22 - ECE 474: Principles of Electronic...

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