III-V/Si Tandem Cells Utilizing Interdigitated Back Contact Si Cells and Varying Terminal Configurations
III-V/Si Tandem Cells Utilizing Interdigitated Back Contact Si Cells and Varying Terminal Configurations
复制标题
采用叉指背接触硅电池和不同端子配置的 III-V/Si 串联电池
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
A. Tamboli
中科院分区：
文献类型：
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作者：
M. Schnabel;M. Rienäcker;A. Merkle;Talysa R Klein;N. Jain;S. Essig;H. Schulte‐Huxel;E. Warren;M. Van Hest;J. Geisz;Jan Schmidt;R. Brendel;R. Peibst;P. Stradins;A. Tamboli
宽带隙III-V与硅太阳能电池的集成已经被证明比单独使用硅产生了更高的效率：正如在这次会议上所介绍的，四端效率已经达到了32%以上。在这一贡献中，检查了这种串联电池中的子电池的独立和电连接操作。如果子电池之间需要导电互连而不是绝缘玻璃滑板，则串联电池的光学性能会发生显著变化。对这些效应进行了研究，并提出了不同类型串联单元运行的光学优化结构。研究发现，在保持导电性的同时最小化两个电池之间导电界面上的反射是此类器件面临的关键挑战。
Integrating wide-bandgap III-V with Si solar cells has been shown to yield higher efficiencies than Si alone: As also presented at this conference, four-terminal efficiencies exceeding 32% have been attained. In this contribution, independent and electrically connected operation of the subcells in such tandem cells is examined. The optics of the tandem cell change significantly if a conducting interconnect, rather than an insulating glass slide, is required between the subcells. These effects are studied, and optically optimized structures for different types of tandem cell operation are presented. It is found that minimizing reflection at the conductive interface between the two cells while maintaining conductivity is the key challenge faced in such devices.