All Subjects
Phase 2: Enough PhysicsSubject 5
Band Theory & Electrical Properties
Understand energy bands, bandgaps, and how they determine whether a material conducts, insulates, or acts as a semiconductor.
Your Progress
0 of 4 chapters completeChapters
1
Energy Bands Explained
From discrete atomic energy levels to continuous energy bands in solids
2 sections
2
The Bandgap
Direct vs indirect bandgaps, temperature effects, and bandgap engineering
2 sections
3
Carriers & Mobility
Electrons, holes, drift, diffusion, and how fast carriers move
2 sections
4
Optical & Thermal Properties
How bandgap affects light absorption, emission, and thermal behavior
2 sections