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Abstract

In the present report the activity concerning the design and fabrication of a small size, high concentration module using GaAs and GaAlAs cells is described. The aim of the work was that of checking the maturity of GaAs technology for solar cells, making experience on very high concentration and demonstrating the feasibility of multicell solutions using spectrum splitting optical filters. The module includes six Fresnel lenses, six solar cell couples with spectrum splitting filters, a full tracking structure, an active cooling circuit and a maximum power tracking circuit. All the principal components, such as cells and optical elements, have been individually characterized up to 1000 suns concentration ratios. For Fresnel lenses, the energy distributions as a function of the distance from the lens, have been measured. The transmission curves of the splitting filters have been measured as well. All the individual cells have been characterized in full spectrum demonstrating an average conversion efficiency at 800 suns AM1.5 of 18% for the GaAs cells and 16.5 for the GaAlAs cells.

Additional information

Authors: FANETTI E, ENEL, ROMA (ITALY);FLORES C, ENEL, ROMA (ITALY);GUARINI G, ENEL, ROMA (ITALY);PALETTA E ENEL, ROMA (ITALY), ENEL, ROMA (ITALY)
Bibliographic Reference: EUR 9843 EN (1985), MF, 98 P., BFR 150, BLOW-UP COPY BFR 490, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989123117600 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en