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Proceedings Paper

Cascade AlGaAs-GaAs Solar Cell Research Using Molecular Beam Epitaxy
Author(s): D. L. Miller; H. T. Yang; S. W. Zehr
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Paper Abstract

For both space and terrestrial applications, improvement of solar cell conversion efficiency has a strong leverage on the power/weight and power/cost ratios for photovoltaic arrays. Currently, several strategies for efficiency improvement are being actively pursued. These include (1) the use of sunlight concentration which, in addition to improving specific cell efficiency, also substitutes relatively sheap concentrator cell area for relatively expensive cell area, (2) the use of direct bandgap semiconductors which absorb all the usable photons in only a few microns of material and also can provide a better match to the solar spectrum, and (3) the assembly of carefully chosen combinations of differing band-gap semiconductors into multijunction cascade convertersl. The latter multijunction cascade strategy provides a particularly potent means of improving the overall converter efficiency.

Paper Details

Date Published: 15 September 1982
PDF: 11 pages
Proc. SPIE 0323, Semiconductor Growth Technology, (15 September 1982); doi: 10.1117/12.934271
Show Author Affiliations
D. L. Miller, Rockwell International (United States)
H. T. Yang, Rockwell International (United States)
S. W. Zehr, Rockwell International (United States)


Published in SPIE Proceedings Vol. 0323:
Semiconductor Growth Technology
Esther Krikorian, Editor(s)

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