DEPARTAMENTO ENERGÍA SOLAR
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Examinando DEPARTAMENTO ENERGÍA SOLAR por Autor "Algora, C."
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Ítem Acceso Abierto 10 MeV proton irradiation effects on GaInP/GaAs/Ge concentrator solar cells and their component subcells(Elsevier Science, 2017-01) Ochoa, M.; Yaccuzzi, Exequiel Eliseo; Espinet-González, P.; Barrera, Marcela Patricia; Barrigón, E.; Ibarra, María Luján; Contreras, Y.; García, Javier Andrés; López, E.; Algora, C.; Alurralde, Martín Alejo; Godfrin, E.M.; Rey-Stolle, I.; Plá, Juan Carlos; Comisión Nacional de Energía Atómica. Departamento de Energía SolarIn this paper, the experimental results of a 10 MeV proton irradiation on concentrator GaInP/GaAs/Ge lattice-matched triple-junction solar cells and their corresponding subcells are examined. Electro-optical characterization such as external quantum efficiency, light and dark I-V measurements, is performed together with theoretical device modeling in order to guide the analysis of the degradation behavior. The GaInP (on Ge) and Ge cell showed a power loss between beginning of life and end of life of about 4% while the GaInP/GaAs/Ge and GaAs solar cells exhibited the highest damage measured of 12% and 10%, respectively for an irradiation fluence equivalent to an 8-years satellite mission in Low Earth Orbit. The results from single-junction solar cells correlate well with those of triple-junction solar cells. The performance of concentrator solar cells structures is similar to that of traditional space-targeted designs reported in literature suggesting that no special changes may be required to use triple junction concentrator solar cells in space.