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- Title
Optimization of the InGaP Top Junction of Triple Junction Solar Cells for Spatial Application.
- Authors
Cunha, V. R.; Micha, D. N.; Kawabata, R. M. S.; Pinto, L. D.; Pires, M. P.; Souza, P. L.
- Abstract
Electrical current mismatching is a well-known limitation of triple junction solar cells that lowers the final conversion efficiency. Several solutions have been proposed to face this issue, including the insertion of a multiple quantum well structure as the intermediate junction's active material. With a better matching in the current among the junctions, the total current increases, thus modifying the working conditions of the overall device. In this way, the InGaP top junction needs to be optimized to such new condition. In this work, numerical simulations were carried out aiming the enlargement of the electrical current density of an InGaP pn junction to achieve the proper current matching in triple junction solar cells for spatial applications. The optimized structure has been grown on a GaAs substrate and characterized as a single junction solar cell. Although the measured short circuit current density and conversion efficiency are still well below the theoretically predicted values, processing improvement should lead to adequate cell performance.
- Subjects
SILICON solar cells; CELL junctions; SOLAR cells; QUANTUM wells
- Publication
Journal of Integrated Circuits & Systems, 2019, Vol 14, Issue 1, p1
- ISSN
1807-1953
- Publication type
Article
- DOI
10.29292/jics.v14i1.62