Back-contact perovskite solar cell fabrication via microsphere lithography
Back-contact perovskite solar cell fabrication via microsphere lithography
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DOI：
10.1016/j.nanoen.2022.107695
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发表时间：
2022-08-27
期刊：
影响因子：
17.6
通讯作者：
Bach, Udo
中科院分区：
文献类型：
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作者：
Deng, Siqi;Tan, Boer;Bach, Udo
用于混合有机-无机钙钛矿太阳能电池（PSC）的背接触电极消除了由透明导电电极引起的寄生吸收损耗，所述寄生吸收损耗是传统的钙钛矿结构器件所固有的。然而，这些非常规架构的制造方法严重依赖于昂贵的光刻，这限制了可扩展性。在此，我们提出了一种替代的成本效益的微制造技术，其中传统的光刻工艺被微球光刻取代，其中紧密堆积的聚苯乙烯微球单层作为蜂窝状电极的图案化掩模。对光刻和微球光刻制作技术进行了全面的比较。使用微球光刻，我们实现了高效的设备具有稳定的功率转换效率（PCE）为8.6%，两倍的报道值使用光刻。微球光刻还实现了迄今为止最大的背接触PSC的制造，具有0.75平方厘米的有效面积和2.44%的稳定PCE。
Back-contact electrodes for hybrid organic-inorganic perovskite solar cells (PSCs) eliminate the parasitic absorption losses caused by the transparent conductive electrodes that are inherent to conventional sandwicharchitecture devices. However, the fabrication methods for these unconventional architectures rely heavily on expensive photolithography, which limits scalability. Herein, we present an alternative cost-effective microfabrication technique in which the conventional photolithography process is replaced by microsphere lithography in which a close-packed polystyrene microsphere monolayer acts as the patterning mask for the honeycomb-shaped electrodes. A comprehensive comparison between photolithography and microsphere lithography fabrication techniques was conducted. Using microsphere lithography, we achieve highly efficient devices having a stabilized power conversion efficiency (PCE) of 8.6%, twice the reported value using photolithography. Microsphere lithography also enabled the fabrication of the largest back-contact PSC to date, having an active area of 0.75 cm2 and a stabilized PCE of 2.44%.