Analysis of Heteroepitaxial AlGaAs/Si Tandem Solar Cell for Concentrator Applications
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概要
- 論文の詳細を見る
The development of monolithic AlGaAs/Si tandem solar cells for concentration applications is proposed. The theoretical analysis is carried out to express the device parameters as a function of the doping concentration and the dislocation density. From the results of this theoretical analysis, it is demonstrated that when the dislocation density is reduced to below 10^4 cm^<-2>, photocurrent matching between the top cell and the bottom cell can be satisfied at the Al composition of Al_xGa_<1-x>Asx = 0.21, and the efficiency of the AlGaAs top cell increases rapidly in the 1-100 sun concentration region. In order to achieve very high efficiency, the dislocation density must be reduced to below 5×10^5 cm^<-2> and concentration ratios greater than 100 times must be used.
- 社団法人応用物理学会の論文
- 1998-07-15
著者
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YAMAGUCHI Masafumi
Toyota Technological Institute
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YANG Ming-Ju
Toyota Technological Institute
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Yang Jia-lin
Yunnan Institute Of Technology
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