MODELING OF 2-JUNCTION, SERIES-CONNECTED TANDEM SOLAR-CELLS USING TOP-CELL THICKNESS AS AN ADJUSTABLE-PARAMETER

被引:225
作者
KURTZ, SR
FAINE, P
OLSON, JM
机构
[1] Solar Energy Research Institute, Golden, CO 80401
关键词
D O I
10.1063/1.347177
中图分类号
O59 [应用物理学];
学科分类号
摘要
Theoretical efficiencies are calculated for two-junction, series-connected solar cells using air mass 1.5 global and direct irradiance spectra. For band-gap combinations previously limited by a low bottom-cell current, thinning of the top cell is shown to result in significant increases in the theoretical efficiencies. The increases are primarily due to increased short-circuit currents, since current matching is achievable. Smaller gains are also seen in the open-circuit voltages of the thinner cells when a low surface-recombination velocity is assumed. Thus, a number of material combinations which previously could only be used in four-terminal configurations can now be considered for series-connected two-junction solar cells.
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页码:1890 / 1895
页数:6
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