- #1
anthony27149
- 2
- 0
Does phonon required a minimum energy in the absorption process of an indirect band gap, and why?
Phonon energy in absorption of indirect band gap
- Context: Undergrad
- Thread starter anthony27149
- Start date
Click For Summary
SUMMARY
Phonons require a minimum energy in the absorption process of an indirect band gap due to the necessity of satisfying both momentum and energy conservation equations. In indirect band gap materials, the absorption of photons involves phonon interactions to conserve momentum, making phonon energy a critical factor in the absorption process. This discussion emphasizes the fundamental role of phonons in enabling transitions that would otherwise be forbidden in direct band gap materials.
PREREQUISITES- Understanding of phonon dynamics in solid-state physics
- Knowledge of indirect band gap semiconductor properties
- Familiarity with conservation laws in quantum mechanics
- Basic principles of photon absorption mechanisms
- Research the role of phonons in indirect band gap semiconductors
- Study energy and momentum conservation in quantum mechanics
- Explore the differences between direct and indirect band gap materials
- Investigate experimental techniques for measuring phonon energy
Physicists, materials scientists, and engineers working in semiconductor research and development, particularly those focused on optical properties and energy absorption mechanisms in materials.
Similar threads
- · Replies 7 ·
Undergrad
Insulator band gap and applied voltage?
- · Replies 2 ·
- · Replies 7 ·
- · Replies 4 ·
- · Replies 2 ·
Graduate
Absorption in Indirect Bandgaps
- · Replies 12 ·
- · Replies 2 ·
Graduate
Indirect absorption and phonons
- · Replies 12 ·
- · Replies 1 ·
Graduate
Direct and Indirect Optical Band Gap
- · Replies 3 ·