Section Section 2. Energy Band Theory Band Theory
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Topics in Energy Band Theory
Intuitive reasoning of formation of energy (conduction and valence) bands. Bloch theorem. Kronig-Penny model Nearly free-electron model Tight-binding approximation (skip du
ECE230A Homework due: October 26, 2010 1. For the Kronig Penny model, show that
Homework #2
(a) vg =0 at the band edge. d 2 a 2 cos(ka) = (b) dk 2 P( cos( a ) sin( a ) ) a sin( a ) a 2 where =
2mE 2m = h h
(c) Find the effective mass assuming P=3/2, ka=,
Solid Solid State Electronics
ECE230A Lecture Notes
Professor Yu-Hwa Lo
1
Contents Contents
Crystal Structure of Solids St Quantum Theory and Energy Band Equilibrium Carrier Statistics Carrier Transport Generation and Recombination Excess Carriers in Sem
Solid Solid State Electronics
ECE230A Lecture Notes
Professor Yu-Hwa Lo
1
Contents Contents
Crystal Structure of Solids St Quantum Theory and Energy Band Equilibrium Carrier Statistics Carrier Transport Generation and Recombination Excess Carriers in Sem
ECE230A Homework due: November 18, 2010
Homework #3
1. The intrinsic carrier concentration at room temperature (300K) for Ge and Si is 2.3x1013 cm-3 and 1.1x1010 cm-3, respectively. The bandgap energy Eg,Ge=0.67 eV, Eg,Si = 1.1 eV. (a) Find the intrinsic