30 % monolithic tandem concentrator solar cells for concentrations exceeding 1000 suns

被引:24
作者
Bett, AW [1 ]
Dimroth, F [1 ]
Lange, G [1 ]
Meusel, M [1 ]
Beckert, R [1 ]
Hein, M [1 ]
Riesen, SV [1 ]
Schubert, U [1 ]
机构
[1] Fraunhofer ISE, D-79100 Freiburg, Germany
来源
CONFERENCE RECORD OF THE TWENTY-EIGHTH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2000 | 2000年
关键词
D O I
10.1109/PVSC.2000.916045
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 of a cost study for concentrator systems are discussed. In this context it is concluded that high-concentration and high-efficiency solar cells are beneficial for lowering the cost of PV produced energy. MOVPE-grown Ga0.35In0.65P/Ga0.63In0.17As monolithic tandem cells are developed for the application in such high-concentration systems. These solar cell structures are grown lattice mismatched on GaAs substrates. An efficiency of > 31 % at 300x AM1.5d and around 30 % at a 1000x concentration was measured. An all-glass test module with an aperture area of 64 cm(2) was built up and showed an efficiency of > 24 % measured under outdoor conditions. The module has a geometrical concentration factor of 123. This result can be further improved by increasing the concentration ratio and optimizing the cell structure.
引用
收藏
页码:961 / 964
页数:4
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