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首页> 外文期刊>IEEE Aerospace and Electronic Systems Magazine >High-efficiency GaInP/GaAs tandem solar cells
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High-efficiency GaInP/GaAs tandem solar cells

机译：高效GaInP / GaAs串联太阳能电池

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摘要

GaInP/GaAs tandem solar cells have achieved new record efficiencies, specifically 25.7% under air-mass 0 (AMO) illumination, 29.5% under AM 1.5 global (AM1.5G) illumination, and 30.2% at 140-180x concentration under AM 1.5 direct (AM1.5D) illumination. These values are the highest two-terminal efficiencies achieved by any solar cell under these illumination conditions. The monolithic, series-connected design of the tandem cells allows them to be substituted for silicon or gallium arsenide cells in photovoltaic panel systems with minimal design changes. The advantages of using GaInP/GaAs tandem solar cells in space and terrestrial applications are discussed primarily in terms of the reduction in balance-of-system costs that accrues when using a higher efficiency cell. The new efficiency values represent a significant improvement over previous efficiencies for this materials system, and we identify grid design, back interface passivation, and top interface passivation as the three key factors leading to this improvement. In producing the high-efficiency cells, we have addressed nondestructive diagnostics and materials growth reproducibility as well as peak cell performance.
机译：GaInP / GaAs串联太阳能电池的效率再创新高，特别是在空气质量0（AMO）照明下为25.7％，在AM 1.5全局（AM1.5G）照明下为29.5％，在AM 1.5直接照明下140-180x浓度下为30.2％。 （AM1.5D）照明。这些值是在这种照明条件下任何太阳能电池所能达到的最高的两端子效率。串联电池的整体式，串联连接的设计允许它们以最小的设计更改来代替光伏面板系统中的硅或砷化镓电池。讨论GaInP / GaAs串联太阳能电池在太空和地面应用中的优势时，主要是在使用更高效率的电池时降低系统平衡成本方面。新的效率值表示该材料系统比以前的效率有了显着提高，并且我们将网格设计，背面界面钝化和顶部界面钝化确定为导致此改进的三个关键因素。在生产高效电池时，我们已经解决了无损诊断和材料生长再现性以及电池性能峰值的问题。

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