This paper describes an ultra-lightweight, high performance, thin, light trapping GaAs solar cell for advanced space power systems. The structure can achieve 24.5 % efficiency at AMO and 1X conditions, corresponding to a power density of 330 W/m2. A significant breakthrough lies in the potential for a specific power of 2906 W/kg, a 440 % improvement over 4-mil silicon solar cells. In addition to being lightweight, this GaAs solar cell can have increased radiation tolerance based on the thin device design. The device is supported by a 3-mil cover glass which has been attached to the front surface with a 1-mil silicone adhesive. The potential for fabrication of 1.65 micron thick space survivable GaAs solar cells with exceptional properties has been demonstrated. Additionally, this new technology offers an alternative approach for obtaining multi-bandgap solar cells and high power output space solar power devices. The thin devices structure can be applied to AlGaAs as well as GaAs top cells, thus offering a new dimension for multi-bandgap concepts.
Development of a lightweight, light trapped, thin GaAs solar cell for spacecraft applications
Entwicklung einer leichten dünnen GaAs-Sonnenwelle mit Lichteinfang für Raumfahrzeuge
1993
6 Seiten, 5 Bilder, 1 Tabelle, Quellen
Aufsatz (Konferenz)
Englisch
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