Nanotech 2002 Vol. 2
Nanotech 2002 Vol. 2
Technical Proceedings of the 2002 International Conference on Computational Nanoscience and Nanotechnology

Nano Particles and Molecules Chapter 17

Simulation of Self-Assembly of Quantum Dots in Superlattices

Authors: P. Liu, Y.Y. Wang and C. Lu

Affilation: Institute of High Performance Computing, Singapore

Pages: 482 - 485

Keywords: quantum dot, spacer layer, stacking sequence, surface diffusion, buried islands

The self-organization of three dimensional quantum dot superlattices that spontaneously form during heteroepitaxial growth is investigated by using a three dimensional kinetic model. The model predictions show that the multilayer arrays of quantum dots can be fully or partially aligned vertically, or completely misaligned with respect to the buried islands, depending on the thickness of the spacer layer. In particular, there is a growth window in which a nearly uniform and regular array of dots is arranged in a squared lattice with an alternating stacking sequence; namely, the A-B-A-B stacking sequence.

ISBN: 0-9708275-6-3
Pages: 504