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

Quantum Effects, Quantum Devices and Spintronics Chapter 9

Binding Energy of an Exciton Bound to a Charged Impurity in Quantum Dots

Authors: W. Xie

Affilation: Guangzhou University, China

Pages: 235 - 238

Keywords: quantumn dot, exciton complex, biding energy

Binding energies for an exciton (X) trapped in the two-dimensional quantum dot by a charged impurity located on the z axis at a distance from the dot plane are calculated using the method of few-body physics. This configuration is called a barrier (D+,X) center or a barrier (A-,X) center. The dependences of the binding energy of the ground state of the barrier (D+,X) and (A-,X) centers on the electron-to-hole mass ratio s and the dot radius R for a few values of the distance d between the fixed positive ion on the z axis and the dot plane are obtained.

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

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