1
|
Hou E, Chen J, Luo J, Fan Y, Sun C, Ding Y, Xu P, Zhang H, Cheng S, Zhao X, Xie L, Yan J, Tian C, Wei Z. Cross-linkable fullerene enables elastic and conductive grain boundaries for efficient and wearable tin-based perovskite solar cells. Angew Chem Int Ed Engl 2024:e202402775. [PMID: 38468414 DOI: 10.1002/anie.202402775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/05/2024] [Accepted: 03/11/2024] [Indexed: 03/13/2024]
Abstract
Tin-based perovskite solar cells (TPSCs) have received increasing attention due to their low toxicity, high theoretical efficiency, and potential applications as wearable devices. However, the inherent fast and uncontrollable crystallization process of tin-based perovskites results in high defect density in the film. Meanwhile, when fabricated into flexible devices, the prepared perovskite film exhibits inevitable brittleness and high Young's modulus, seriously weakening the mechanical stability. In this work, we design and synthesize a cross-linkable fullerene, thioctic acid functionalized C60 fulleropyrrolidinium iodide (FTAI), which has multiple interactions with perovskite components and can finely regulate the crystallization quality of perovskite film. The obtained perovskite film shows an increased grain size and a more matched energy level with the electron transport material, effectively improving the carrier extraction efficiency. The FTAI-based rigid device achieves a champion efficiency of 14.91% with enhanced stability. More importantly, the FTAI located at the perovskite grain boundaries could spontaneously cross-link during the perovskite annealing process, which effectively improves the conductivity and elasticity of grain boundaries, thereby giving the film excellent bending resistance. Finally, the FTAI-based wearable device yields a record efficiency of 12.35% and displays robust bending durability, retaining about 90% of the initial efficiency after 10,000 bending times.
Collapse
Affiliation(s)
- Enlong Hou
- Huaqiao University - Xiamen Campus, College of Materials Science and Engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Jingfu Chen
- Huaqiao University - Xiamen Campus, College of Materials Science and Engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Jiefeng Luo
- Huaqiao University - Xiamen Campus, College of Materials Science and Engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Yuteng Fan
- Xiamen University, College of Chemistry and Chemical Engineering, No.442 Siming Avenue, 361005, Xiamen, CHINA
| | - Chao Sun
- Huaqiao University - Xiamen Campus, College of Materials Science and Engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Yu Ding
- Xiamen University, College of Chemistry and Chemical Engineering, CHINA
| | - Peng Xu
- Huaqiao University - Xiamen Campus, College of Materials Science and Engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Hui Zhang
- Huaqiao University - Xiamen Campus, College of Materials Science and Engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Shuo Cheng
- Huaqiao University - Xiamen Campus, College of Materials Science and Engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Xinjing Zhao
- Huaqiao University - Xiamen Campus, College of Materials Science and Engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Liqiang Xie
- Huaqiao University - Xiamen Campus, College of Materials Science and Engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Jiawei Yan
- Xiamen University, College of Chemistry and Chemical Engineering, No.442 Siming Avenue, 361005, Xiamen, CHINA
| | - Chengbo Tian
- Huaqiao University - Xiamen Campus, college of materials science & engineering, No.668 Jimei Avenue, 361021, Xiamen, CHINA
| | - Zhanhua Wei
- Huaqiao University College of Materials Science and Engineering, No.668 Jimei Avenue, Xiamen, Fujian, 361021, Xiamen, CHINA
| |
Collapse
|