Longitudinal Homogenized Intermediates Facilitate Air-Processed Hybrid Sequential Deposition of Perovskite/Silicon Tandem Solar Cells

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2024-10-14 DOI:10.1021/acsmaterialslett.4c0168710.1021/acsmaterialslett.4c01687

Jiahao Fang, Weiwei Chen, Shaojie Yuan, Shaofei Yang, Hongguang Meng, Kaitian Mao, Tieqiang Li, Zhengjie Zhu, Xingyu Feng, Huitian Guo, Lianyou Tang, Jinshuai Zhang, Xiang He, Qin Fei, Cao Yu, Jian Zhou, Yi Cui and Jixian Xu*,

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Abstract

Hybrid sequential deposition (HSD) of perovskite thin films is highly desirable for constructing tandem solar cells on textured silicon substrates. However, in the second step of HSD, where the inorganic and organic bilayers undergo thermal interdiffusion to form perovskite, performance is often limited by the need for a very dry environment (inert gas atmosphere or dry air with relative humidity below 10%) and incomplete reactions throughout the film thickness. Here, we demonstrate a longitudinal homogenized intermediate (LHI) strategy that enables the preparation of HSD perovskites under ambient conditions (25 °C, 30%–50% relative humidity). This approach circumvents the formation of a perovskite capping layer, promoting uniform interdiffusion of the organic–inorganic bilayer. As a result, the efficiency of 1.68 eV perovskite solar cells processed in air using HSD improved from 16.42% to 20.65%, leading to an efficiency of 28.55% for textured perovskite/silicon tandem cells.

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纵向均匀化中间体促进了包晶石/硅串联太阳能电池的空气处理混合顺序沉积

在有纹理的硅衬底上构建串联太阳能电池时，非常需要混合序贯沉积（HSD）过氧化物薄膜。然而，在 HSD 的第二步，即无机和有机双层膜发生热扩散形成包晶石时，由于需要非常干燥的环境（惰性气体环境或相对湿度低于 10% 的干燥空气）以及整个薄膜厚度的反应不完全，其性能往往受到限制。在这里，我们展示了一种纵向均质中间体（LHI）策略，它能在环境条件（25 °C、30%-50% 相对湿度）下制备 HSD 包晶。这种方法避免了包晶封盖层的形成，促进了有机-无机双分子层的均匀相互扩散。因此，使用 HSD 在空气中加工的 1.68 eV 包晶石太阳能电池的效率从 16.42% 提高到 20.65%，使纹理包晶石/硅串联电池的效率达到 28.55%。

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.