HW2_merged - NCN www.nanohub.org EE-305: Solid State...

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Alam ECE-305 1 www.nanohub.org NCN EE-305: Solid State Devices Solution Homework #2 Muhammad Ashraful Alam alam@purdue.edu
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Q1 Alam ECE-305 2 Ego=1.170; a=4.730e-4; b=636; T=[0:1:600]; Eg=Ego-a.*(T.^2)./(T+b); Plot(T, Eg); hold on; Ego=1.205; a=2.8e-4; Eg=Ego-a.*T; Plot (T, Eg);
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Q2 a & b Alam ECE-305 3 Ga As Si
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Q2 cont. Alam ECE-305 4 c) N type d) P type Ec Ef Ei N-Type Ec Ef Ei Ev Ev P-Type
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Q3 Alam ECE-305 5 a) Given E=E F 11 () 2 1e F F B F E E k T fE b) Given E F =E c ( ) 0.269 1 cB c E kT Ec k T f E kT e b) Given f (Ec+kT) =1-f (Ec+kT) 1 e 1 1 1 e 1 e F Fc FF B c B c B E kT E k T E kT E k T E kT E k T E kT E k T
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Q3 cont. Alam ECE-305 6 ee F C cB FB FC E kT E k T E kT E k T E kT E
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Q4
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This note was uploaded on 02/05/2012 for the course ECE 305 taught by Professor Melloch during the Spring '08 term at Purdue University-West Lafayette.

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HW2_merged - NCN www.nanohub.org EE-305: Solid State...

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