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Achieving Efficient and Stable Perovskite Solar Cells in Ambient Air Through Non-Halide Engineering
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2021-10-10 , DOI: 10.1002/aenm.202102169 Zhen Wang 1 , Junjun Jin 1 , Yapeng Zheng 2 , Xiang Zhang 1 , Zhenkun Zhu 1 , Yuan Zhou 1 , Xiaxia Cui 1 , Jinhua Li 3 , Minghui Shang 2 , Xingzhong Zhao 4 , Sheng Liu 1 , Qidong Tai 1
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2021-10-10 , DOI: 10.1002/aenm.202102169 Zhen Wang 1 , Junjun Jin 1 , Yapeng Zheng 2 , Xiang Zhang 1 , Zhenkun Zhu 1 , Yuan Zhou 1 , Xiaxia Cui 1 , Jinhua Li 3 , Minghui Shang 2 , Xingzhong Zhao 4 , Sheng Liu 1 , Qidong Tai 1
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The realization of highly efficient perovskite solar cells (PSCs) in ambient air is considered to be advantageous for low-cost commercial manufacturing. However, it is fundamentally difficult to achieve comparable device performance to that obtained in an inert atmosphere, especially when the ambient humidity is high. Here, an effective precursor engineering that simultaneously employs non-halide lead acetate and lead thiocyanate lead sources for fabricating high-quality methylammonium lead iodide perovskite films in ambient air with enhanced moisture tolerance, is reported. The presence of Ac– and SCN– ions not only enables the facile formation of homogeneous and highly crystalized perovskite films, but also directs the uniform growth of the crystals along the (110) direction. Accordingly, a 20.55% efficiency is demonstrated, one of the best results for air-processed MAPbI3 PSCs, which is also the highest value achieved with non-halide lead sources. Furthermore, the unencapsulated device shows fivefold prolonged air stability (3600 h) compared to the conventional PbI2-based PSC. Together with the use of non-toxic antisolvent, this strategy is fully compatible with ambient air operation and thus of great potential for practical applications.
中文翻译：
通过非卤化物工程在环境空气中实现高效稳定的钙钛矿太阳能电池
在环境空气中实现高效钙钛矿太阳能电池（PSC）被认为有利于低成本的商业制造。然而，要实现与惰性气氛中获得的器件性能相当的器件性能从根本上来说是困难的，尤其是当环境湿度很高时。在这里，报道了一种有效的前体工程，它同时采用非卤化物醋酸铅和硫氰酸铅铅源，在环境空气中制造具有增强的耐湿性的高质量甲基铵碘化铅钙钛矿薄膜。Ac –和 SCN –的存在离子不仅能够轻松形成均匀且高度结晶的钙钛矿薄膜，而且还能引导晶体沿（110）方向均匀生长。因此，证明了 20.55% 的效率，这是空气处理的 MAPbI 3 PSC的最佳结果之一，这也是非卤化物铅源实现的最高值。此外，与传统的基于PbI 2的 PSC相比，未封装的装置的空气稳定性延长了 5 倍（3600 小时）。再加上无毒抗溶剂的使用，该策略与环境空气操作完全兼容，因此具有巨大的实际应用潜力。
更新日期：2021-11-11
中文翻译：
通过非卤化物工程在环境空气中实现高效稳定的钙钛矿太阳能电池
在环境空气中实现高效钙钛矿太阳能电池（PSC）被认为有利于低成本的商业制造。然而，要实现与惰性气氛中获得的器件性能相当的器件性能从根本上来说是困难的，尤其是当环境湿度很高时。在这里，报道了一种有效的前体工程，它同时采用非卤化物醋酸铅和硫氰酸铅铅源，在环境空气中制造具有增强的耐湿性的高质量甲基铵碘化铅钙钛矿薄膜。Ac –和 SCN –的存在离子不仅能够轻松形成均匀且高度结晶的钙钛矿薄膜，而且还能引导晶体沿（110）方向均匀生长。因此，证明了 20.55% 的效率，这是空气处理的 MAPbI 3 PSC的最佳结果之一，这也是非卤化物铅源实现的最高值。此外，与传统的基于PbI 2的 PSC相比，未封装的装置的空气稳定性延长了 5 倍（3600 小时）。再加上无毒抗溶剂的使用，该策略与环境空气操作完全兼容，因此具有巨大的实际应用潜力。
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