Triple-junction solar cell efficiencies above 32%: The promise and challenges of their application in high-concentration-ratio PV systems

被引：51

作者：

Cotal, HL ^{[1
]}

Lillington, DR ^{[1
]}

Ermer, JH ^{[1
]}

King, RR ^{[1
]}

Karam, NH ^{[1
]}

Kurtz, SR ^{[1
]}

Friedman, DJ ^{[1
]}

Olson, JM ^{[1
]}

Ward, JS ^{[1
]}

Duda, A ^{[1
]}

Emery, KA ^{[1
]}

Moriarty, T ^{[1
]}

机构：

[1] Spectrolab Inc, Sylmar, CA 91342 USA

来源：

CONFERENCE RECORD OF THE TWENTY-EIGHTH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2000 | 2000年

关键词：

D O I：

10.1109/PVSC.2000.916044

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Results from Spectrolab-grownGa(0.5)In(0.5)P/GaAs/Ge structures optimized for the AM1.5D spectrum are described along with progress toward developing next-generation multijunction solar cells for high concentration ratios (X). The epitaxially-grown layers were processed into triple junction cells both at Spectrolab and NREL, and I-V tested vs. X. Cells were tested with efficiencies as high as 32.4% near 372 suns. The FF limited the performance with increasing X as a result of the increased role of the series resistance. The Voc vs. X showed its log-linear dependence on Isc over 1000 suns. Based on recent cell improvements for space applications, multijunction cells appear to be ideal candidates for high efficiency, cost effective, PV concentrator systems. Future development of new 1-eV materials for space cells, and further reduction in Ge wafer costs, promises to achieve cells with efficiencies > 40% that cost $0.3/W or less at concentration levels between 300 to 500 suns.

引用

页码：955 / 960

页数：6

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