Quantum Well Design Basics

What materials to use for designing quantum wells.


Key Takeaways

  • The choice of materials for the quantum well and barrier layers is paramount. Materials must have compatible lattice structures to minimize defects, with common combinations including GaAs/AlGaAs, InGaAs/InP, and GaN/AlGaN.
  • The width of the quantum well significantly influences the energy levels and density of states, where narrower wells result in greater separation between energy levels due to increased confinement.
  • Applying strain to quantum well layers through lattice mismatch or external means can modify the band structure, allowing for improved control over electronic and optical properties.

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