Modelling of lattice matched dilute nitride 4-junction concentrator solar cells on Ge substrates

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URI: https://hdl.handle.net/10902/29282
ISSN: 0094-243X
ISSN: 1551-7616
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Autoría
Ochoa Gómez, MarioAutoridad Unican; García Vara, Iván; Lombardero Hernández, Iván; Ayllón Lázaro, Luna; Rey-Stolle Prado, Ignacio; Algora del Valle, Carlos; Johnson, Andrew; Davies, J. Iwan; Tan, Kian Hua; Loke, Wan Khai; Wicaksono, Satrio; Yoon, Soon Fatt; Ochoa Martínez, Efraín; Gabás Pérez, María Mercedes
Fecha
2016-09-01
Derechos
© American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Ochoa, M., García, I., Lombardero, I., Ayllón, L., Rey-Stolle, I., Algora, C., Johnson, A., Davies, J.I., Tan, K.H., Loke, W.K., Wicaksono, S., Yoon, S.F., Ochoa-Martínez, E. & Gabás, M. 2016. Modelling of lattice matched dilute nitride 4-junction concentrator solar cells on Ge substrates. AIP Conference Proceedings, 1766(1), 080003 and may be found at https://doi.org/10.1063/1.4962101
Publicado en
AIP Conference Proceedings, 2016, 1766(1), 080003
12th International Conference on Concentrator Photovoltaic Systems (CPV-12), Freiburg, Germany, 2016
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American Institute of Physics
Resumen/Abstract
Technology Computer Aided Design modeling is used to examine the performance under light concentration of a 4-J solar cell Ge-based that includes a 1-eV MBE-grown dilute nitride subcell. The 1-eV solar cell is modeled and examined by using material parameters extracted from detailed electro-optical characterization prior to be included into a multijunction structure. The modelling reveals the impact of the electric field-assisted collection in the performance of single junction solar cells and its effect when included in a 4-Junction solar cells. This effect is responsible for the lower FF (~15% lower) in the 4J when including the dilute nitride subcell, especially if it limits the photocurrent. Finally, an optimization procedure based on dilute nitrides with higher material quality is performed resulting in a 4-Junction solar cell with an efficiency of 47% for concentrations between 1000-2000 suns direct terrestrial spectrum.
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