Abstract
A model based on the k.p perturbation theory to compute the energy bands in a CdTe/PbTe superlattice structure is developed. The model uses the dispersion relations for the heavy hole, light hole and the split off bands to compute the effective bandgap in a CdTe/PbTe superlattice structure. Given a certain thickness of the layers composing the superlattice the model computes the effective bandgap. This model will be used towards understanding the relationship between film thickness and optical bandgaps in a CdTe/PbTe superlattice. The end goal is to tailor the optical bandgap of a CdTe/PbTe superlattice to result in maximum efficiency when used in a solar cell.
Publisher
Trans Tech Publications, Ltd.
Reference6 articles.
1. M. Green, Solar Cells: Operating Principles: University of New South Wales, (2008).
2. M. Green, Third Generation Photovoltaics: Solar Cells for 2020 and beyond: Physica E, (2002).
3. M. W. Lok C. Lew Yan Voon, The k p Method: Springer, (2009).
4. S. P. Bremner, M. Y. Levy, and C. B. Honsberg, Analysis of tandem solar cell efficiencies under AM1. 5G spectrum using a rapid flux calculation method, Progress in Photovoltaics, vol. 16, pp.225-233, May (2008).
5. V. N. Fleurov and K. A. Kikoin, K. P Perturbation-Theory for Light-Absorption in Semiconductors Doped by 3d Metals, Journal of Physics C-Solid State Physics, vol. 15, pp.3523-3537, (1982).