Abstract Monochromatic conversion efficiencies in excess of 60% have been achieved with Vertical Epitaxial HeteroStructure Architechture laser power converters (with anywhere from 5 to 20+ n/p junctions stacked vertically). We are presently investigating the applicability of this design to solar cells, whereby the individual junctions of a multi-junction cell are replaced with a current matched stack of subcells. If viable, such a design offers the potential for efficiency gains via reduced I 2 R losses and elevated V oc . Moreover, splitting the short-circuit current over additional junctions opens up the possibility of operation under concentration ratios otherwise considered impractical for conventional cells.

中文翻译：

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为聚光光伏应用实施垂直外延异质结构 (VEHSA) 设计的挑战和策略

摘要 垂直外延异质结构激光功率转换器（垂直堆叠 5 到 20+ 个 n/p 结）已实现超过 60% 的单色转换效率。我们目前正在研究这种设计对太阳能电池的适用性，其中多结电池的各个结被当前匹配的子电池堆代替。如果可行，这种设计可通过降低 I 2 R 损耗和升高 V oc 来提供效率增益的潜力。此外，将短路电流分流到额外的结上开辟了在浓度比下运行的可能性，否则传统电池被认为是不切实际的。