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Barrier Designs in Perovskite Solar Cells for Long‐Term Stability
Advanced Energy Materials ( IF 27.8 ) Pub Date : 2020-07-28 , DOI: 10.1002/aenm.202001610
Shasha Zhang 1, 2 , Zonghao Liu 1 , Wenjun Zhang 1 , Zhaoyi Jiang 1 , Weitao Chen 1 , Rui Chen 1 , Yuqian Huang 1 , Zhichun Yang 1 , Yiqiang Zhang 2 , Liyuan Han 3 , Wei Chen 1
Affiliation  

Perovskite solar cells (PSCs) have attracted much attention in the past decade and their power conversion efficiency has been rapidly increasing to 25.2%, which is comparable with commercialized solar cells. Currently, the long‐term stability of PSCs remains as a major bottleneck impeding their future commercial applications. Beyond strengthening the perovskite layer itself and developing robust external device encapsulation/packaging technology, integration of effective barriers into PSCs has been recognized to be of equal importance to improve the whole device’s long‐term stability. These barriers can not only shield the critical perovskite layer and other functional layers from external detrimental factors such as heat, light, and H2O/O2, but also prevent the undesired ion/molecular diffusion/volatilization from perovskite. In addition, some delicate barrier designs can simultaneously improve the efficiency and stability. In this review article, the research progress on barrier designs in PSCs for improving their long‐term stability is reviewed in terms of the barrier functions, locations in PSCs, and material characteristics. Regarding specific barriers, their preparation methods, chemical/photoelectronic/mechanical properties, and their role in device stability, are further discussed. On the basis of these accumulative efforts, predictions for the further development of effective barriers in PSCs are provided at the end of this review.

中文翻译:

钙钛矿太阳能电池的屏障设计可实现长期稳定性

钙钛矿太阳能电池(PSC)在过去十年中引起了广泛关注,其功率转换效率已迅速提高到25.2%,与商业化的太阳能电池相当。当前,PSC的长期稳定性仍然是阻碍其未来商业应用的主要瓶颈。除了加强钙钛矿层本身并开发强大的外部设备封装/包装技术外,将有效屏障集成到PSC中对于提高整个设备的长期稳定性也具有同等重要性。这些屏障不仅可以保护关键的钙钛矿层和其他功能层免受外界有害因素(如热,光和H 2 O / O 2)的影响。,但也可以防止钙钛矿产生不希望的离子/分子扩散/挥发。另外,一些精细的屏障设计可以同时提高效率和稳定性。在这篇综述文章中,从屏障功能,在PSC中的位置和材料特性等方面,综述了PSC的屏障设计在改善其长期稳定性方面的研究进展。关于特定的障碍,将进一步讨论其制备方法,化学/光电/机械性能及其在器件稳定性中的作用。基于这些累积的努力,在本评论的结尾提供了对PSC有效障碍进一步发展的预测。
更新日期:2020-09-15
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