Interfacial stabilization for inverted perovskite solar cells with long-term stability
Interfacial stabilization for inverted perovskite solar cells with long-term stability
复制标题
具有长期稳定性的倒置钙钛矿太阳能电池的界面稳定
DOI：
10.1016/j.scib.2021.02.029
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发表时间：
2021-05-13
期刊：
影响因子：
18.9
通讯作者：
He, Zhubing
中科院分区：
文献类型：
--
作者：
Chen, Wei;Han, Bing;He, Zhubing
由于离子迁移穿过顶部电荷传输层并最终导致金属电极腐蚀，钙钛矿太阳能电池（PSC）通常表现出显着的性能下降。在这里，我们展示了一种使用氯化硼亚酞菁（Cl6SubPc）/富勒烯电子传输层的界面管理策略，它不仅钝化了钙钛矿中的界面缺陷，而且还抑制了卤化物扩散，多种技术证明了这一点，包括通过电子能量损失光谱进行视觉元素映射。结果，我们获得了效率为 22.0%（经过认证的 21.3%）、保质期为 7000 小时、湿热应力下 T80 为 816 小时（没有 Cl6SubPc 的情况下不到 20 小时）的倒置 PSC，在惰性环境下 80 摄氏度下 2000 小时后初始性能保持率为 98%，在照明和最大功率点 2034 小时后初始性能保持率为 90%封装器件在环境中的跟踪能力，在 1272 小时户外测试 ISOS-O-1 后为 95%。我们的策略和成果为推动 PSC 的潜在商业化铺平了新的道路。(c) 2021 中国科学出版社。由 Elsevier B.V. 和中国科学出版社出版。版权所有。
Perovskite solar cells (PSCs) commonly exhibit significant performance degradation due to ion migration through the top charge transport layer and ultimately metal electrode corrosion. Here, we demonstrate an interfacial management strategy using a boron chloride subphthalocyanine (Cl6SubPc)/fullerene electron-transport layer, which not only passivates the interfacial defects in the perovskite, but also suppresses halide diffusion as evidenced by multiple techniques, including visual element mapping by electron energy loss spectroscopy. As a result, we obtain inverted PSCs with an efficiency of 22.0% (21.3% certified), shelf life of 7000 h, T80 of 816 h under damp heat stress (compared to less than 20 h without Cl6SubPc), and initial performance retention of 98% after 2000 h at 80 degrees C in inert environment, 90% after 2034 h of illumination and maximum power point tracking in ambient for encapsulated devices and 95% after 1272 h outdoor testing ISOS-O-1. Our strategy and results pave a new way to move PSCs forward to their potential commercialization solidly.(c) 2021 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.