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
Akiyama Hidefumi
中科院分区:
工程技术3区
文献类型:
--
作者:
Zhu Lin;Huang Shanshan;Akiyama Hidefumi

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本文对金属有机气相外延生长的单片AlGaInP/AlGaInAs/InGaAs/GaInNAs/Ge五结(5J)太阳能电池中的临界稀氮亚电池进行了诊断和盈亏平衡分析。通过绝对电致发光测量,并在对照电池的帮助下,揭示了我们最新的5J的一些关键内部性能,AM0效率为28.8%,其中子电池的voc从上到下分别为1576±1 mV, 1253±4 mV, 1001±1 mV, 372 mV和196 mV。前3个亚细胞的产率为26.8%,而GaInNAs-和ge亚细胞的产率仅为2.0%。对前三个亚细胞的内辐射效率的评估表明,gainas -亚细胞的生长导致最近的gainas -亚细胞的晶格质量明显下降,而AlGaInP-和algainas -亚细胞的晶格质量略有下降。最后,采用半经验方法预测了用于5J架构的1-eV子电池的基本参数,使其能够超过30%-34%的效率基准。
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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