Light management strategies can increase the efficiency of perovskite single-junction and tandem solar cells. In this study, we present perovskite solar cells deposited on different shallow nanotextures by spin-coating. A morphological and optoelectronic analysis demonstrates a high quality of the perovskite absorber, regardless of the substrate. Using both, a nanotexture and a sodium fluoride antireflective coating, enables us to improve the power conversion efficiency by 1.0%_abs to 19.7%, when compared to its planar reference. A characterization of the optical performance of nanotextured perovskite solar cells and rigorous optical simulations reveal that the gain in efficiency can be largely attributed to reduced reflection losses and therefore increased absorption in the perovskite. Our nanotextured perovskite solar cells reach 93.6% of the attainable current density, marking the highest reported value for perovskite single-junctions and approaching those of established photovoltaic technologies. Our results demonstrate that nanotextures can be applied to solution-processed perovskite solar cells and pave the way to increased power conversion efficiencies by light management not only in perovskite single-junction but also perovskite–silicon tandem solar cells.

中文翻译：

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通过纳米结构化溶液处理的钙钛矿太阳能电池中的高级光管理，提高了量子效率

光管理策略可以提高钙钛矿单结和串联太阳能电池的效率。在这项研究中，我们介绍了通过旋涂沉积在不同浅纳米纹理上的钙钛矿太阳能电池。形态学和光电分析表明，无论基质如何，钙钛矿吸收剂的质量都很高。同时使用纳米纹理和氟化钠减反射涂层，使我们能够将功率转换效率提高1.0％_abs与平面参考相比为19.7％。纳米织构钙钛矿太阳能电池的光学性能表征和严格的光学模拟表明，效率的提高很大程度上可归因于减少的反射损失，因此增加了钙钛矿的吸收。我们的纳米结构钙钛矿太阳能电池达到了可达到的电流密度的93.6％，这是钙钛矿单结的最高报告值，已接近成熟的光伏技术。我们的结果表明，纳米纹理可以应用于固溶钙钛矿太阳能电池，并且不仅通过钙钛矿单结而且还通过钙钛矿-硅串联太阳能电池的光管理，为提高功率转换效率铺平了道路。