单线态fission和串联太阳能电池减少热降解并延长寿命
Singlet fission and tandem solar cells reduce thermal degradation and enhance lifespan
摘要：
光伏装置的经济价值取决于其寿命和功率转换效率。后者的进展包括规避肖克利-奎塞尔极限的机制，如串联设计和多激子产生（MEG）。在这里，我们解释了硅串联和MEG增强硅电池架构如何导致较低的电池工作温度，与标准c-Si电池相比，增加了器件寿命。MEG增强型硅电池的进一步优点也得到了证实：（i）器件架构可以完全避免电流匹配的需要;以及（ii）降解后，并四苯（一种候选单线态裂变（MEG的一种形式）材料）对太阳光谱是透明的。（i）和（ii）的组合意味着即使单线态裂变层劣化，初级硅器件也将继续以合理的效率操作。从模块的角度来看，单线态裂变增强硅电池的寿命优势与备受推崇的钙钛矿/硅串联和传统的c-Si模块相比是有利的。
英文摘要：
The economic value of a photovoltaic installation depends upon both its lifetime and power conversion efficiency. Progress towards the latter includes mechanisms to circumvent the Shockley- Queisser limit, such as tandem designs and multiple exciton generation (MEG). Here we explain how both silicon tandem and MEG enhanced silicon cell architectures result in lower cell operating temperatures, increasing the device lifetime compared to standard c-Si cells. Also demonstrated are further advantages from MEG enhanced silicon cells: (i) the device architecture can completely circumvent the need for current-matching; and (ii) upon degradation, tetracene, a candidate singlet fission (a form of MEG) material, is transparent to the solar spectrum. The combination of (i) and (ii) mean that the primary silicon device will continue to operate with reasonable efficiency even if the singlet fission layer degrades. The lifespan advantages of singlet fission enhanced silicon cells, from a module perspective, are compared favorably alongside the highly regarded perovskite/silicon tandem and conventional c-Si modules.
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