1. Improved efficiency of GaSb solar cells using an Al0.50Ga0.50As0.04Sb0.96 window layer.
- Author
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Parola, S., Vauthelin, A., Tournet, J., Kret, J., El Husseini, J., Martinez, F., Rouillard, Y., Tournié, E., and Cuminal, Y.
- Subjects
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SOLAR cell efficiency , *GALLIUM antimonide , *SOLAR spectra , *DYE-sensitized solar cells , *SHORT-circuit currents , *SOLAR cells - Abstract
The increasing number of subcells in multi-junction structures imposes the use of narrow bandgaps for a full harvesting of the solar spectrum. In this context, gallium antimonide (GaSb) and its lattice-matched alloys offer a great potential. To date, GaSb-based multi-junction solar cells exhibit experimental results below theoretical expectations, due to a limiting GaSb subcell. In this paper, a new design of GaSb cells comprising an Al 0.50 Ga 0.50 As 0.04 Sb 0.96 window layer is studied. With this design, an excellent conversion efficiency of 7.2% is achieved under 1 sun (AM1.5G) illumination. This performance is attributed to a significant improvement in short-circuit current. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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