Band Structure
Tight-binding model — E(k) dispersion, Band Gap, material classification
Parameters
Band Structure E(k)
Self-Assessment
Q1. What does Band Gap mean?
A
Bandwidth
B
Energy difference between valence and conduction bands
C
Kinetic energy of electron
D
Lattice parameter
Q2. What is the approximate Band Gap of Si?
A
0.1 eV
B
3.5 eV
C
1.12 eV
D
9.0 eV
Q3. In the tight-binding model, increasing t causes:
A
Bandwidth increases
B
Bandwidth decreases
C
Band Gap increases
D
Nothing changes