In this paper, we present a stepped architecture optimized for current matching in high‐voltage laser power converter photovoltaic (PV) cells. The integrated series/parallel connection in stepped PV cells combines the advantages of well‐known multijunction and multisegment approaches with respect to current matching, whereas their specific drawbacks are circumvented. The superior misalignment tolerance of stepped PV cells in comparison with multisegment cells is shown by simulations of the maximum acceptable misalignment (MAM) for a range of devices with various output voltages. We present the first realization of stepped PV cells with two stacked GaAs‐based pn‐junctions. Thereby, the unique properties of the lateral current flow in the bottom cell and the assessment of the optical absorption in the subcells are discussed. Moreover, the effects of segmentation and number of stacked junctions on the I‐V characteristics are investigated. Finally, the behavior towards misalignment of a laser spot is studied for stepped and multisegment PV cells. An optimal current matching for misalignment‐prone power‐by‐light systems is found with a six‐segment stepped PV cell.

中文翻译：

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具有优化电流匹配的光伏激光功率转换器的集成串联/并联连接

在本文中，我们提出了一种针对高压激光功率转换器光伏（PV）电池中的电流匹配进行优化的阶梯式架构。步进式光伏电池中集成的串联/并联连接结合了电流匹配方面众所周知的多结和多段方法的优点，同时规避了它们的特定缺点。通过模拟最大可接受的失准（MAM），可以看出，与多段电池相比，阶梯式PV电池具有更高的失准公差）适用于具有各种输出电压的一系列设备。我们展示了具有两个堆叠式基于GaAs的pn结的阶梯式光伏电池的首次实现。因此，讨论了底部电池中横向电流的独特性质以及子电池中光吸收的评估。此外，还研究了分段和堆叠结的数量对IV特性的影响。最后，针对步进式和多段式PV电池研究了激光光斑的未对准行为。通过六段式步进式光伏电池，发现了易于错位的电力供电系统的最佳电流匹配。