Stable perovskite solar cells with 23.12% efficiency and area over 1 cm2 by an all-in-one strategy

Stable perovskite solar cells with 23.12% efficiency and area over 1 cm2 by an all-in-one strategy
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稳定%20钙钛矿%20solar%20cells%20with%2023.12%%20效率%20and%20面积%20over%201%20cm2%20by%20an%20一体%20策略

DOI:
10.1007/s11426-022-1244-y
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发表时间:
2022-04
期刊:
Science China Chemistry
影响因子:
--
通讯作者:
Liyuan Han
Liyuan Han
中科院分区:
其他
文献类型:
--
作者:
Hongzhen Su;Xuesong Lin;Yanbo Wang;Xiao Liu;Zhenzhen Qin;Qiwei Shi;Qifeng Han;Yiqiang Zhang;Liyuan Han

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为了实现钙钛矿太阳能电池(PSC)的商业化,需要克服器件放大和操作稳定性方面的剩余挑战。在这里,我们报告了一个多合一的策略,通过集成的空穴传输材料(HTM)的氧化与钝化层的形成,同时解决了HTM氧化引起的稳定性问题,并实现了在大面积钝化均匀的缺陷。所得到的器件平均实现了23.12%的认证PCE,孔径面积为1.04 cm 2,并且由于排除了空气暴露、吸湿性Li-TFSI和锂基废物,具有高操作稳定性,可再现性高,保持约100%的性能。在最大功率点连续1个太阳光照下运行1,600小时后,其初始PCE的90%。我们的策略简化了PSC的制造过程,这与商业规模的方法兼容,提供了轻松获得高效和稳定的大面积PSC的途径。
To realize the commercialization of perovskite solar cells (PSCs), it is required to overcome the remaining challenges in device enlargement and operational stability. Here, we report an all-in-one strategy by integrating the oxidation of hole-transport material (HTM) with the formation of the passivation layer, which simultaneously solved the stability issues caused by HTM oxidation and realized the uniform defects in passivation over a large area. The resulting devices achieved a certified PCE of 23.12% on average with an aperture area of 1.04 cm2 and are reproducible with high operational stability because of the exclusion of air exposure, hygroscopic Li-TFSI, and the lithium-based wastes, maintaining ca. 90% of their initial PCEs after operation at the maximum power point under continuous 1 sun illumination for 1,600 h. Our strategy simplifies the fabrication process of PSCs, which is compatible with commercial-scale methods, offering facile access to efficient and stable large-area PSCs.
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