Quiz 5 Solutions - Solid State Electronics - Fall 2008 | ELEG 340, Quizzes of Solid State Physics

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ELEG 340 - Fall 08 Solid-State Electronics Quiz 5 20 November 2008 NAME. So L ion Time Limit: 30 minutes Closed Books and Notes. You may use your own calculator, but may not loan or borrow one (ask proctor if you have questions). Put each expression ina final form as best you can. Guidelines: I. Full credit requires the dimensions/ units for all numerical quantities. IL. Show your work and calculations for full credit; accuracy to 2 significant figures is sufficient. IH. Assume that the semiconductor material is silicon at room temperature (300 K), unless otherwise stated. IV. Data: at room temperature (300K): thermal energy kgT = 0.026 eV; thermal voltage kpT/q = 0.026 volts; silicon intrinsic concentration n; = 1 (or 1.5) x 10° cm; recombination lifetimes: Tr Tp = 1 psec; dielectric constant xs; = 11.8; permittivity of free space 6) = 8.85x10°'4 F/em; electron charge [q! = |e| = 16x10? Cou; My = f LOO emt > Ap = 409 Cyt wt Ws V. Equations: see list at end of quiz om |