A FEM approach to simulate the electronic structure and optical property of InAs/GaAs self-assembled quantum dot

In this work, a new improved FEM approach is described for analyzing strain distributions, computing electronic structure, and simulating the optical property of InAs/GaAs self-assembled quantum dot. A window-based software FEMLAB has been employed for multiphysics simulation. This approach can be used as a guideline for fast quantum-dot device structure design, especially in quantum dot lasers and quantum dot infrared photodetectors. Furthermore, the proposed approach and model could be used to develop three-dimensional nano-device simulator with further specific device module.