The defective bottom interfaces of perovskites and hole-transport layers (HTLs) limit the performance of p-i-n structure perovskite solar cells. We report that the addition of lead chelation molecules into HTLs can strongly interact with lead(II) ion (Pb 2+ ), resulting in a reduced amorphous region in perovskites near HTLs and a passivated perovskite bottom surface. The minimodule with an aperture area of 26.9 square centimeters has a power conversion efficiency (PCE) of 21.8% (stabilized at 21.1%) that is certified by the National Renewable Energy Laboratory (NREL), which corresponds to a minimal small-cell efficiency of 24.6% (stabilized 24.1%) throughout the module area. Small-area cells and large-area minimodules with lead chelation molecules in HTLs had a light soaking stability of 3010 and 2130 hours, respectively, at an efficiency loss of 10% from the initial value under 1-sun illumination and open-circuit voltage conditions.

中文翻译：

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用于高效稳定钙钛矿微型模块的铅螯合空穴传输层

钙钛矿和空穴传输层 (HTL) 的底部界面缺陷限制了 pin 结构钙钛矿太阳能电池的性能。我们报告说，将铅螯合分子添加到 HTL 中可以与铅 (II) 离子 (Pb2+), 导致 HTL 附近钙钛矿中的非晶区减少和钙钛矿底面钝化。孔径面积为26.9平方厘米的微模块，经美国国家可再生能源实验室（NREL）认证，功率转换效率（PCE）为21.8%（稳定在21.1%），对应最小小电池效率为整个模块区域的 24.6%（稳定为 24.1%）。HTLs 中具有铅螯合分子的小面积电池和大面积微型组件的光浸泡稳定性分别为 3010 和 2130 小时，在 1-sun 光照和开路电压条件下效率比初始值损失 10% .