Regulating crystal growth and enhancing efficiency in CsPbBr3 perovskite solar cells through the incorporation of Pb(SCN)2 additive in ambient multistep deposition process
1
Issued Date
2025-01-01
Resource Type
ISSN
02728842
Scopus ID
2-s2.0-105010904941
Journal Title
Ceramics International
Rights Holder(s)
SCOPUS
Bibliographic Citation
Ceramics International (2025)
Suggested Citation
Pudkon W., Kanlayapattamapong T., Arpornrat T., Seriwattanachai C., Kanjanaboos P., Sagawa T., Supruangnet R., Nakajima H., Wongratanaphisan D., Ruankham P. Regulating crystal growth and enhancing efficiency in CsPbBr3 perovskite solar cells through the incorporation of Pb(SCN)2 additive in ambient multistep deposition process. Ceramics International (2025). doi:10.1016/j.ceramint.2025.07.146 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/111386
Title
Regulating crystal growth and enhancing efficiency in CsPbBr3 perovskite solar cells through the incorporation of Pb(SCN)2 additive in ambient multistep deposition process
Corresponding Author(s)
Other Contributor(s)
Abstract
All−inorganic CsPbBr<inf>3</inf> perovskite has served as a light−absorbing layer in solar cells due to its excellent humidity and temperature tolerance. However, the photovoltaic performance of CsPbBr<inf>3</inf>−based solar cells remains low because of poor film morphology, crystallinity, and high defect density. Additive engineering efficiently controls the crystallization dynamics, suggesting a high−quality perovskite film. This research introduces Pb(SCN)<inf>2</inf> as an additive to the CsPbBr<inf>3</inf> perovskite by incorporating Pb(SCN)<inf>2</inf> into the PbBr<inf>2</inf> precursor solution in a multistep spin−coating method conducted in ambient air. The PbBr<inf>2</inf> films modified with Pb(SCN)<inf>2</inf> exhibited large grain size and low wettability, hindering the crystallization process of CsPbBr<inf>3</inf> perovskite films because of the interaction between SCN<sup>−</sup> and Pb<sup>2+</sup> ions. The modified CsPbBr<inf>3</inf> perovskite film demonstrated full coverage, enhanced crystallinity, reduced defect density, a smoother surface, and larger grain size. The optimal performance of the modified CsPbBr<inf>3</inf> solar cells achieved the highest power conversion efficiency (PCE) of 5.85 %. Moreover, the modified CsPbBr<inf>3</inf> device without encapsulation exhibited remarkable long−term stability under ambient conditions, lasting over 2000 h, outperforming the pristine version. This study emphasizes that the Pb(SCN)<inf>2</inf> additive is valuable for preparing high−quality and stable inorganic CsPbBr<inf>3</inf> perovskite films in ambient air, which could benefit photovoltaics and other optoelectronic applications.