Article citationsMore>>
Lincot D., Guillemoles, J.F., Taunier, S., Guimard, D., Sicx-Kurdi, J., Chaumont, A., Roussel, O., Ramdani, O., Hubert, C., Fauvarque, J.P., Bodereau, N., Parissi, L., Panheleux, P., Fanouillere, P., Naghavi, N., Grand, P.P., Benfarah, M., Mogensen, P. and Kerrec, O. (2004) Chalcopyrite Thin Film Solar Cells by Electrodeposition. Solar Energy, 77, 725-737.
https://doi.org/10.1016/j.solener.2004.05.024
has been cited by the following article:
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TITLE:
Guidelines for Optimization of the Absorber Layer Energy Gap for High Efficiency Cu(In,Ga)Se2 Solar Cells
AUTHORS:
N. Severino, N. Bednar, N. Adamovic
KEYWORDS:
Solar Cell, Thin-Film, Simulation, Material Modelling
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.6 No.4,
April
29,
2018
ABSTRACT: This work investigates in-depth the effects of variation of the compositional ratio of the absorber layer in Cu(In,Ga)Se2 (CIGS) thin-film solar cells. Electrical simulations were carried out in order to propose the most suitable gallium double-grading profile for the high efficiency devices. To keep the model as close as possible to the real behavior of the thin film solar cell a trap model was implemented to describe the bulk defects in the absorber layer. The performance of a solar cell with a standard CIGS layer thickness (2 μm) exhibits a strong dependence on the front grading height (decreasing band gap toward the middle of the CIGS layer). An absolute gain in the efficiency (higher than 1%) is observed by a front grading height of 0.22. Moreover, simulation results show that the position of the plateau (the region characterized by the minimum band gap) should be accurately positioned at a compositional ratio of 20% Ga and 80% In, which corresponds to the region where a lower bulk defect density is expected. The developed model demonstrates that the length of the plateau is not playing a relevant role, causing just a slight change in the solar cell performances. Devices with different absorber layer thicknesses were simulated. The highest efficiency is obtained for a CIGS thin film with thicknesses between 0.8 and 1.1 μm.
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