Simple Estimation of X- Trion Binding Energy in Semiconductor Quantum Wells
Strongly Correlated Electrons
2016-08-16 v1 Other Condensed Matter
Abstract
A simple illustrative wave function with only three variational parameters is suggested to calculate the binding energy of negatively charged excitons (X-) as a function of quantum well width. The results of calculations are in agreement with experimental data for GaAs, CdTe and ZnSe quantum wells, which differ considerably in exciton and trion binding energy. The normalized X- binding energy is found to be nearly independent of electron-to-hole mass ratio for any quantum well heterostructure with conventional parameters. Its dependence on quantum well width follows an universal curve. The curve is described by a simple phenomenological equation.
Keywords
Cite
@article{arxiv.cond-mat/0502300,
title = {Simple Estimation of X- Trion Binding Energy in Semiconductor Quantum Wells},
author = {R. A. Sergeev and R. A. Suris and G. V. Astakhov and W. Ossau and D. R. Yakovlev},
journal= {arXiv preprint arXiv:cond-mat/0502300},
year = {2016}
}
Comments
8 pages, 3 Postscript figures