lec3 - 6.012 - Electronic Devices and Circuits Lecture 3 -...

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6.012 - Electronic Devices and Circuits Lecture 3 - The Five Basic Equations - Outline Announcements Webnotes - 1. Lecture Outline and Summary; 2. Comments on photoconductivity; 3. Solving the 5 basic equations Review Photoconductivity: drift and low level injection combined Non-uniform excitation in non-uniform samples Conditions: N d (x), N a (x), g L (x,t), n ¢ (X,t), and/or p ¢ (X,t) specified Unknowns (5): n(x,t), p(x,t), J e (x,t), J h (x,t), E(x,t) Continuity and conservation: gen/recomb, flux divergence Diffusion fluxes and currents Poisson’s equation The necessary 5 equations General solutions Special cases we can solve (approximately) by hand Carrier concentrations in uniformly doped material (Lect. 1) Drift (Lect. 2) Low level uniform optical injection (Lect. 2) Doping profile problems (depletion approximation) Non-uniform injection (flow problems) Using the hand solutions to model devices Clif Fonstad, 9/03 Lecture 3 - Slide 1
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This note was uploaded on 07/20/2009 for the course CSAIL 6.012 taught by Professor Prof.cliftonfonstadjr. during the Fall '03 term at MIT.

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lec3 - 6.012 - Electronic Devices and Circuits Lecture 3 -...

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