ECE 103

# ECE 103 - Midterm Exam 2 makeup ECE103 2/27/09 ALLOWED:...

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Midterm Exam 2 makeup ECE103 2/27/09 ALLOWED: Calculators and one 8.5”x11 page of notes (one side). Note you are required to turn in your page of notes with our exam. NOT ALLOWED: Textbooks, class notes, problem sets, etc. ATTEMPT ALL PROBLEMS AND SHOW ALL WORK! This exam has a maximum score of 100 points. You have 80 minutes to complete this exam. q = 1.60x10 -19 C; k = 8.617x10 -5 eV/K; m 0 = 9.11x10 -31 kg; ε 0 = 8.85x10 -14 F/cm; 1 μ m = 1x10 -4 cm = 1x10 -6 m; n i (Si, T=300K) = 1.0x10 10 cm -3 ; E g (Si at T=300K) = 1.12 eV; n i (GaAs, T=300K) = 2.2x10 6 cm -3 ; E g (GaAs at T=300K) = 1.42 eV. kT=0.0259eV at 300K. 1. (30 points). Define the following terms concisely, (i) Space charge region, (ii) Avalanche breakdown, (iii) Ideality factor (n or η), (iv)Transistor action, (v) Emitter efficiency, (vi) Base transport coefficient. (vii) LED efficiency, (viii) solar cell fill factor and power efficiency. 2.

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## This note was uploaded on 09/24/2011 for the course ECE 103 taught by Professor Wang during the Fall '08 term at UCSD.

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ECE 103 - Midterm Exam 2 makeup ECE103 2/27/09 ALLOWED:...

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