Efficient carbon-based CsPbI<sub>2</sub>Br perovskite solar cells achieved <i>via</i> coordination passivation by CS and CO of 4-(2-thioureido)benzoic acid
We introduced 4-(2-thioureido)benzoic acid (TB) into carbon-based CsPbI<sub>2</sub>Br solar cells, achieving a power conversion efficiency (PCE) of 13.96%. The SO and CO groups in TB coordinate with the un-coordinated Pb<sup>2+</sup> at the surface and grain boundaries, forming a cross-linked structure that effectively passivates these defects. Additionally, TB forms a barrier on the CsPbI<sub>2</sub>Br surface, enabling the TB-modified CsPbI<sub>2</sub>Br solar cells to retain 80.8% of their initial device efficiency after 500 hours of storage at 30% relative humidity.
Authors
- Yuhang Liang (ORCID: https://orcid.org/0000-0002-8256-8171)
- Yannan Qian (ORCID: https://orcid.org/0000-0002-1130-7257)
- Changzhong Wang (ORCID: https://orcid.org/0000-0002-4136-2433)
- Haoju Li (ORCID: https://orcid.org/0000-0002-9071-7835)
- Renjie Xie (ORCID: https://orcid.org/0009-0004-6009-0690)
- Lei Luo (ORCID: https://orcid.org/0000-0001-6087-6731)
- Guangli Liu (ORCID: https://orcid.org/0000-0001-7361-7907)
- Huang Cheng
Institutions
- Guangdong University of Technology (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d4cc06517d
- Citations
- 2
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.46