Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 68, Issue 1, Pages 71-87Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0927-0248(00)00346-9
Keywords
quantum well solar cell; GaAs/InGaAs; strain-balance and tandem solar cell
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The state of GaAs/InGaAs quantum well solar cell research is reviewed. The effect of strain upon the GaAs/InGaAs cells is discussed and the limits to a strained GaAs/InGaAs cell established. The strain-balance approach is suggested as a means of overcoming the limits inherent to the strained approach and the principle is demonstrated in two differing device configurations. The strain-balance devices show enhanced efficiencies over their strained counterparts and in one case, comparable efficiency to a good GaAs control cell. The application of these cells to tandem structures is discussed, indicating the potential for a substantial efficiency enhancement. (C) 2001 Elsevier Science B.V. All rights reserved.
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