Diagnosis and Breakeven Analysis of GaInNAs Subcell Incorporated in Monolithic Lattice-Matched Five-Junction Solar Cell
Diagnosis and Breakeven Analysis of GaInNAs Subcell Incorporated in Monolithic Lattice-Matched Five-Junction Solar Cell
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单片晶格匹配五结太阳能电池中 GaInNAs 子电池的诊断和盈亏平衡分析
DOI:
10.1109/jphotov.2022.3195090
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发表时间:
2022
影响因子:
3
通讯作者:
Akiyama Hidefumi
中科院分区:
文献类型:
--
作者:
Zhu Lin;Huang Shanshan;Akiyama Hidefumi
We focus on the diagnosis and breakeven analysis of the critical dilute nitride subcell incorporated in a monolithic AlGaInP/AlGaInAs/InGaAs/GaInNAs/Ge five-junction (5J) solar cell grown by metalorganic vapor phase epitaxy. Via absolute electroluminescent measurement and with the help of the control cells, some key internal performance of our latest 5J with AM0 efficiency of 28.8% are disclosed, where the subcellVocfrom top to bottom are assessed as 1576±1 mV, 1253±4 mV, 1001±1 mV, 372 mV, and 196 mV, respectively. The yield contributed by the top three subcells is assessed as 26.8%, while that by the GaInNAs- and Ge-subcell is only 2.0% in total. The evaluated internal radiative efficiency of the top three subcells reveal that GaInNAs-subcell growth leads to obvious degradation of the lattice quality in the closest GaInAs-subcell and slight drops in the AlGaInP- and AlGaInAs-subcells. Finally, a semiempirical approach is used to predict the essential parameters on the 1-eV subcell used for such 5J architecture so that it can exceed the efficiency benchmark of 30%–34%.
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DOI:
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DOI:
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