While waveguide-based light concentrators offer significant advantages, their application has not been considered an interesting option for assisting multijunction or other two-terminal tandem solar cells. In this study, we present a simple yet effective approach to enhancing the output power of transfer-printed multijunction InGaP/GaAs solar cells. By utilizing a simply combinable waveguide concentrator featuring a coplanar waveguide with BaSO₄ Mie scattering elements, we enable the simultaneous absorption of directly illuminated solar flux and indirectly waveguided flux. The deployment of cells is optimized for front-surface photon collection in monofacial cells. Through systematic comparisons across various waveguide parameters, supported by both experimental and theoretical quantifications, we demonstrate a remarkable improvement in the maximum output power of a 26%-efficient cell, achieving an enhancement of ~93% with the integration of the optimal scattering waveguide. Additionally, a series of supplementary tests are conducted to explore the effective waveguide size, validate enhancements in arrayed cell module performance, and assess the drawbacks associated with rear illumination. These findings provide a comprehensive understanding of our proposed approach towards advancing multi-junction photovoltaics.

虽然基于波导的聚光器具有显着的优势，但它们的应用并未被认为是辅助多结或其他两端串联太阳能电池的有趣选择。在这项研究中，我们提出了一种简单而有效的方法来提高转移印刷多结 InGaP/GaAs 太阳能电池的输出功率。通过利用具有带有 BaSO ₄ Mie 散射元件的共面波导的简单组合波导聚光器，我们能够同时吸收直接照射的太阳通量和间接波导通量。电池的部署针对单面电池中的前表面光子收集进行了优化。通过对各种波导参数的系统比较，在实验和理论量化的支持下，我们证明了效率为 26% 的电池的最大输出功率有了显着提高，通过集成最佳散射波导，实现了约 93% 的增强。此外，还进行了一系列补充测试，以探索有效波导尺寸，验证阵列单元模块性能的增强，并评估与后照明相关的缺点。这些发现使我们能够全面了解我们提出的推进多结光伏发电的方法。