Enhancing High-Quality Perovskite Films via Investigation of PbI <sub>2</sub> Crystallization at Different Pre-Annealing Temperatures
The two-step blade coating process, recognized for its simplicity and compatibility with large-area production, is a key technology for fabricating high-quality perovskite films. Achieving high-quality perovskite films depends on the crystallization quality of lead iodide films. Unlike spin coating, the solvent evaporation mechanism in blade coating induces a rapid crystallization rate of lead iodide, resulting in poor crystallization quality that negatively impacts the optoelectronic conversion efficiency of perovskite solar cells. This study shows that incorporating a 35°C substrate pre-annealing (SP) step effectively mitigates the rapid crystallization issue of lead iodide. With this approach, the power conversion efficiency (PCE) of a 1[Formula: see text]cm 2 perovskite solar cell reaches 16.15%, demonstrating excellent stability.
Authors
- Jingcheng Xu (ORCID: https://orcid.org/0000-0002-9972-0782)
- Kai Kang (ORCID: https://orcid.org/0000-0002-7644-7058)
- Chaoyu Xiang (ORCID: https://orcid.org/0000-0001-9040-1382)
- Shuo Ding (ORCID: https://orcid.org/0000-0002-4731-4125)
- Xinjian Li (ORCID: https://orcid.org/0000-0001-5338-7112)
- Zhuoyuan Kong
Institutions
- Ningbo University (CN)
- Ningbo University of Technology (CN)
- Advanced Materials and Devices (United States) (US)
- Ningbo Institute of Industrial Technology (CN)
Publication Details
- Journal
- NANO
- Published
- 2025-03-01
- DOI
- https://doi.org/10.1142/s1793292025500584
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00