Spontaneous formation of robust two-dimensional perovskite phases
Name
2572597.pdf
Description
Accepted version
Size
8.43 MB
Format
Adobe PDF
Checksum (MD5)
889a01b0c7846571010273a836ff8c23
Author(s)
Tan, Shaun
Shih, Meng-Chen
Lu, Yongli
Choi, Seung-Gu
Dong, Yifan
Lee, Joo-Hong
Yavuz, Ilhan
Larson, Bryon W
Park, So Yeon
Kodalle, Tim
Date Issued
May 8, 2025
Journal
Science
Publisher
American Association for the Advancement of Science
Citation
Shaun Tan et al. ,Spontaneous formation of robust two-dimensional perovskite phases. Science 388, 639-645 (2025).
Version
Author's final manuscript
Abstract
The two-dimensional on three-dimensional (2D/3D) perovskite bilayer heterostructure can improve the stability and performance of perovskite solar cells. We show that the 2D/3D perovskite stack in a device evolves dynamically during its end-of-life decomposition. Initially phase-pure 2D interlayers can evolve differently, resulting in different device stabilities. We show that a robust 2D interlayer can be formed using mixed solvents to regulate its crystallinity and phase purity. The resulting 2D/3D devices achieved 25.9% efficiency and had good durability, retaining 91% of their initial performance after 1074 hours at 85°C using maximum power point tracking.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Creative Commons Attribution-Noncommercial-ShareAlike
Persistent DSpace Link
DOI of Published Version
10.1126/science.adr1334
