Longitudinal Homogenized Intermediates Facilitate Air-Processed Hybrid Sequential Deposition of Perovskite/Silicon Tandem Solar Cells
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.
Authors
- Xingyu Feng (ORCID: https://orcid.org/0000-0002-1853-9149)
- Fei Qin (ORCID: https://orcid.org/0000-0001-7105-2631)
- Kaitian Mao (ORCID: https://orcid.org/0000-0001-8747-6287)
- Shaojie Yuan (ORCID: https://orcid.org/0000-0003-4121-5895)
- Jixian Xu (ORCID: https://orcid.org/0000-0001-8119-3411)
- Jinshuai Zhang (ORCID: https://orcid.org/0000-0002-8783-5849)
- Zhengjie Zhu (ORCID: https://orcid.org/0000-0001-6374-7820)
- Yi Cui (ORCID: https://orcid.org/0000-0002-9182-9038)
- Cao Yu (ORCID: https://orcid.org/0000-0001-6307-2245)
- Hongguang Meng (ORCID: https://orcid.org/0000-0001-8099-0566)
- Huitian Guo (ORCID: https://orcid.org/0000-0001-6059-1736)
- Xiang He (ORCID: https://orcid.org/0000-0002-2417-9063)
- Tieqiang Li (ORCID: https://orcid.org/0000-0003-3693-1002)
- Weiwei Chen (ORCID: https://orcid.org/0000-0002-5045-2537)
- Jian Zhou (ORCID: https://orcid.org/0000-0001-6443-2644)
- Lianyou Tang
- Shaofei Yang (ORCID: https://orcid.org/0009-0007-5786-2647)
- Jiahao Fang
Institutions
- University of Science and Technology of China (CN)
- Maxwell Technologies (United States) (US)
- Chinese Academy of Sciences (CN)
- Suzhou Institute of Nano-tech and Nano-bionics (CN)
- Hefei National Center for Physical Sciences at Nanoscale (CN)
- Microscale (United States) (US)
- Maxwell Technologies (Switzerland) (CH)
- Nanobionics (Brazil) (BR)
Publication Details
- Journal
- ACS Materials Letters
- Published
- 2024-10-14
- DOI
- https://doi.org/10.1021/acsmaterialslett.4c01687
- Citations
- 4
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.83
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities