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Ab-initio assessment of new sulfo-iodide compounds as candidate top-cell materials for silicon-based multi-junction tandem solar cells

机译:从头开始评估新的磺基碘化合物作为基于硅的多结串联太阳能电池的候选顶层电池材料

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New semiconductors having the potential for excellent performance, scalable manufacturing and stability on a 25 year horizon are needed to enable silicon tandem solar cells. Here we explore theoretically a new class of non-toxic sulfoiodide compounds (CuxZnySyIx) has the potential to crystallize with the 4-fold coordinated “adamantine” structure. The band gaps predicted may be suitable for silicon multi-junction tandems. Initial calculations show tolerance to Cu vacancies, which do not appear to lead to deep levels in the band gap. These materials could potentially offer the “best of both worlds,” solution processability like an iodide and improved stability like a sulfide.
机译:需要新的半导体,以实现出色的性能,可扩展的制造以及25年的稳定性,以实现硅串联太阳能电池。在这里,我们从理论上探索一类新的无毒硫代硫化物(铜 x y 小号 y 一世 x )具有4倍配位的“金刚烷”结构结晶的潜力。预测的带隙可能适用于硅多结串联。最初的计算显示出对Cu空位的耐受性,这似乎不会导致带隙深的水平。这些材料可能提供“两全其美”的解决方案,如碘化物的可加工性,以及如硫化物的更高的稳定性。

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